fix(release): use node 24

* prepare v0.19.0

Bump all @json-render/* packages to 0.19.0, add changelog entry for
custom directives API and @json-render/directives package, and update
the web app changelog page.

* fix(release): use npm publish for OIDC trusted publishing

pnpm publish does not pass through OIDC credentials, causing E404 on
npm. Switch to pnpm pack + npm publish per package, matching the
pattern used in wterm.

.changeset/README.md

@@ -1,13 +0,0 @@
-# Changesets
-
-Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
-with multi-package repos, or single-package repos to help you version and publish your code. You can
-find the full documentation for it [in the repository](https://github.com/changesets/changesets).
-
-## Adding a changeset
-
-To add a changeset, run `pnpm changeset` in the root of the repository. This will prompt you to select
-which packages have changed and what type of version bump (major, minor, or patch) should be applied.
-
-All `@json-render/*` packages are versioned together -- a changeset for any one of them will bump all
-packages to the same version.

.changeset/config.json

@@ -1,27 +0,0 @@
-{
-  "$schema": "https://unpkg.com/@changesets/config@3.1.1/schema.json",
-  "changelog": "@changesets/cli/changelog",
-  "commit": false,
-  "fixed": [
-    [
-      "@json-render/core",
-      "@json-render/react",
-      "@json-render/react-pdf",
-      "@json-render/shadcn",
-      "@json-render/react-native",
-      "@json-render/remotion",
-      "@json-render/codegen",
-      "@json-render/zustand",
-      "@json-render/redux",
-      "@json-render/jotai"
-    ]
-  ],
-  "linked": [],
-  "access": "public",
-  "baseBranch": "main",
-  "updateInternalDependencies": "patch",
-  "privatePackages": {
-    "version": true,
-    "tag": false
-  }
-}

.cursor/mcp.json

@@ -0,0 +1,8 @@
+{
+  "mcpServers": {
+    "json-render": {
+      "command": "npx",
+      "args": ["tsx", "examples/mcp/server.ts", "--stdio"]
+    }
+  }
+}

.github/workflows/ci.yml

@@ -13,34 +13,55 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  ci:
-    name: Lint, Type Check & Build
+  version-sync:
+    name: Version Sync Check
     runs-on: ubuntu-latest
-
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Install pnpm
-        uses: pnpm/action-setup@v4
-
+      - uses: actions/checkout@v4
       - name: Setup Node.js
         uses: actions/setup-node@v4
+        with:
+          node-version: 22
+      - name: Check version sync
+        run: node scripts/check-version-sync.js
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 20
-          cache: "pnpm"
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm lint
 
-      - name: Install dependencies
-        run: pnpm install --frozen-lockfile
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      - name: Build packages
+        run: pnpm turbo run build --filter='./packages/*'
+      - run: pnpm test
 
-      - name: Lint
-        run: pnpm lint
-
-      - name: Type check
-        run: pnpm type-check
-
-      - name: Test
-        run: pnpm test
-
-      - name: Build
-        run: pnpm build
+  typecheck:
+    name: Type Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm type-check

.github/workflows/release.yml

@@ -6,21 +6,69 @@ on:
       - main
   workflow_dispatch:
 
-concurrency: ${{ github.workflow }}-${{ github.ref }}
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
 
 permissions:
-  contents: write
-  pull-requests: write
+  contents: read
 
 jobs:
-  release:
-    name: Release
+  check-release:
+    name: Check for new version
     runs-on: ubuntu-latest
+    timeout-minutes: 5
+    outputs:
+      should_release: ${{ steps.check.outputs.should_release }}
+      needs_github_release: ${{ steps.check.outputs.needs_github_release }}
+      version: ${{ steps.check.outputs.version }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Compare package.json version to npm and check GitHub release
+        id: check
+        run: |
+          LOCAL_VERSION=$(node -p "require('./packages/core/package.json').version")
+          echo "Local version: $LOCAL_VERSION"
+
+          NPM_VERSION=$(npm view @json-render/core version 2>/dev/null || echo "0.0.0")
+          echo "npm version: $NPM_VERSION"
+
+          if [ "$LOCAL_VERSION" != "$NPM_VERSION" ]; then
+            echo "Version changed: $NPM_VERSION -> $LOCAL_VERSION"
+            echo "should_release=true" >> "$GITHUB_OUTPUT"
+            echo "needs_github_release=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "Version unchanged on npm, skipping build and publish"
+            echo "should_release=false" >> "$GITHUB_OUTPUT"
+
+            TAG="v$LOCAL_VERSION"
+            if gh release view "$TAG" &>/dev/null; then
+              echo "GitHub release $TAG exists"
+              echo "needs_github_release=false" >> "$GITHUB_OUTPUT"
+            else
+              echo "GitHub release $TAG is missing, will create it"
+              echo "needs_github_release=true" >> "$GITHUB_OUTPUT"
+            fi
+          fi
+          echo "version=$LOCAL_VERSION" >> "$GITHUB_OUTPUT"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  publish:
+    name: Publish to npm
+    needs: check-release
+    if: needs.check-release.outputs.should_release == 'true'
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    environment: Release
+    permissions:
+      contents: read
+      id-token: write
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
 
       - name: Install pnpm
         uses: pnpm/action-setup@v4
@@ -28,20 +76,86 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 24
           cache: pnpm
           registry-url: "https://registry.npmjs.org"
 
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
 
-      - name: Create Release Pull Request or Publish
-        uses: changesets/action@v1
-        with:
-          version: pnpm ci:version
-          publish: pnpm ci:publish
-          title: "chore: version packages"
-          commit: "chore: version packages"
+      - name: Build packages
+        run: pnpm run build
+
+      - name: Publish all public packages
+        run: |
+          LOCAL_VERSION="${{ needs.check-release.outputs.version }}"
+          FAILED=""
+
+          publish_pkg() {
+            local dir="$1" name="$2"
+            REGISTRY_VERSION=$(npm view "$name" version 2>/dev/null || echo "0.0.0")
+            if [ "$LOCAL_VERSION" = "$REGISTRY_VERSION" ]; then
+              echo "$name@$LOCAL_VERSION already published, skipping"
+              return 0
+            fi
+            echo "Publishing $name@$LOCAL_VERSION..."
+            TARBALL=$(cd "$dir" && pnpm pack --pack-destination /tmp | tail -1)
+            if ! npm publish "$TARBALL" --provenance --access public; then
+              FAILED="$FAILED $name"
+            fi
+          }
+
+          for dir in packages/*/; do
+            PKG_NAME=$(node -p "try { const p = require('./$dir/package.json'); p.private ? '' : p.name } catch { '' }")
+            [ -z "$PKG_NAME" ] && continue
+            publish_pkg "$dir" "$PKG_NAME"
+          done
+
+          if [ -n "$FAILED" ]; then
+            echo "Failed to publish:$FAILED"
+            exit 1
+          fi
+
+  github-release:
+    name: Create GitHub Release
+    needs: [check-release, publish]
+    if: >-
+      always()
+      && needs.check-release.outputs.needs_github_release == 'true'
+      && (needs.publish.result == 'success' || needs.publish.result == 'skipped')
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Extract changelog entry
+        run: |
+          VERSION="${{ needs.check-release.outputs.version }}"
+          awk '/<!-- release:start -->/{found=1; next} /<!-- release:end -->/{found=0} found{print}' CHANGELOG.md > /tmp/release-notes.md
+
+          LINES=$(wc -l < /tmp/release-notes.md | tr -d ' ')
+          if [ "$LINES" -lt 2 ]; then
+            echo "Error: No release notes found between <!-- release:start --> and <!-- release:end --> markers in CHANGELOG.md"
+            exit 1
+          fi
+          echo "Extracted release notes for $VERSION ($LINES lines)"
+
+      - name: Create GitHub Release
+        run: |
+          VERSION="${{ needs.check-release.outputs.version }}"
+          TAG="v$VERSION"
+
+          if gh release view "$TAG" &>/dev/null; then
+            echo "Release $TAG already exists"
+          else
+            echo "Creating release $TAG..."
+            gh release create "$TAG" \
+              --title "$TAG" \
+              --target ${{ github.sha }} \
+              --notes-file /tmp/release-notes.md
+          fi
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_VERCEL_TOKEN_ELEVATED }}

.gitignore

@@ -4,6 +4,7 @@
 node_modules
 .pnp
 .pnp.js
+.pnpm-store/
 
 # Local env files
 .env*
@@ -27,6 +28,9 @@ out/
 build
 dist
 *.tsbuildinfo
+.svelte-kit/
+tsup.config.bundled_*.mjs
+next-env.d.ts
 
 
 # Debug

.vscode/mcp.json

@@ -0,0 +1,9 @@
+{
+  "servers": {
+    "json-render": {
+      "type": "stdio",
+      "command": "npx",
+      "args": ["tsx", "examples/mcp/server.ts", "--stdio"]
+    }
+  }
+}

AGENTS.md

@@ -26,6 +26,7 @@ This ensures we don't install outdated versions that may have incompatible types
 
 - Do not use emojis in code or UI
 - Use shadcn CLI to add shadcn/ui components: `pnpm dlx shadcn@latest add <component>`
+- **Web app docs (`apps/web/`):** Never use Markdown table syntax (`| col | col |`). Always use HTML `<table>` with `<thead>`, `<tbody>`, `<tr>`, `<th>`, `<td>`. Markdown tables do not render correctly in the web app. Inside HTML table cells, curly braces must be escaped as JSX expressions (e.g. `<code>{'{ "$state": "/path" }'}</code>`) because MDX parses `{` as a JSX expression boundary.
 
 ## AI SDK / AI Gateway
 
@@ -72,6 +73,39 @@ Do **not** add `--port` flags -- portless handles port assignment automatically.
   - Skills in `skills/*/SKILL.md` (if the package has a corresponding skill)
   - `AGENTS.md` (if workflow or conventions change)
 
+## Releasing
+
+Releases are manual, single-PR affairs. The maintainer controls the changelog voice and format.
+
+All public `@json-render/*` packages share the same version. The canonical version lives in `packages/core/package.json`.
+
+### Preparing a release
+
+When asked to prepare a release (e.g. "prepare v0.17.0"):
+
+1. Create a branch (e.g. `prepare-v0.17.0`)
+2. Bump the version in `packages/core/package.json`
+3. Run `pnpm run version:sync` to update all other `@json-render/*` packages
+4. Write the changelog entry in `CHANGELOG.md`, wrapped in `<!-- release:start -->` and `<!-- release:end -->` markers (move the markers from the previous entry to the new one)
+5. **Fill documentation gaps** — every public package should have:
+   - A row in the root `README.md` packages table
+   - A renderer section in the root `README.md` (if it's a renderer)
+   - An API reference page at `apps/web/app/(main)/docs/api/<name>/page.mdx`
+   - An entry in `apps/web/lib/page-titles.ts` and `apps/web/lib/docs-navigation.ts`
+   - An entry in the docs-chat system prompt (`apps/web/app/api/docs-chat/route.ts`)
+   - A skill at `skills/<name>/SKILL.md`
+   - A `packages/<name>/README.md`
+6. **Run `pnpm type-check`** after all changes to verify nothing is broken
+7. Open a PR and merge to `main`
+
+CI compares the `@json-render/core` version to what's on npm. If it differs, it builds, publishes all public packages, and creates the GitHub release automatically. The release body is extracted from the content between the markers.
+
+### Scripts
+
+- `pnpm run version:sync` — sync all `@json-render/*` package versions to match `@json-render/core`
+- `pnpm run version:check` — verify all versions are in sync (runs in CI)
+- `pnpm run ci:publish` — build all packages and publish to npm (CI only)
+
 <!-- opensrc:start -->
 
 ## Source Code Reference

CHANGELOG.md

@@ -0,0 +1,62 @@
+# Changelog
+
+## 0.19.0
+
+<!-- release:start -->
+### New Features
+
+- **Custom directives API** — `@json-render/core` now supports custom directives via `defineDirective`, letting you declare new JSON shapes (like `$format`, `$math`) that resolve to computed values at render time. Directives compose naturally — nest `$format` over `$math` over `$state` and they resolve inside-out. All four renderers (React, Vue, Svelte, Solid) have built-in directive resolution (#279)
+- **`@json-render/directives`** — New package shipping seven ready-made directives: `$format` (date, currency, number, percent via `Intl`), `$math` (add, subtract, multiply, divide, mod, min, max, round, floor, ceil, abs), `$concat`, `$count`, `$truncate`, `$pluralize`, and `$join`. Also exports `createI18nDirective` for `$t` translation keys with `{{param}}` interpolation, and `standardDirectives` for one-line registration (#279)
+
+### Improvements
+
+- **Example READMEs** — Added documentation to the chat, dashboard, game-engine, and no-ai examples (#277)
+
+### Contributors
+
+- @ctate
+<!-- release:end -->
+
+## 0.18.0
+
+### New Features
+
+- **Devtools** — Five new packages for inspecting json-render apps in the browser: `@json-render/devtools` (framework-agnostic core), plus `@json-render/devtools-react`, `@json-render/devtools-vue`, `@json-render/devtools-svelte`, and `@json-render/devtools-solid` adapters. Drop `<JsonRenderDevtools />` into your app to get a shadow-DOM-isolated panel with six tabs (Spec, State, Actions, Stream, Catalog, Pick), a DOM picker that maps clicked elements back to spec keys via `data-jr-key`, a capped event store, and server-side stream tap utilities. Floating toggle or `Cmd`/`Ctrl` + `Shift` + `J`, tree-shakes to `null` in production (#273)
+- **Devtools example** — New `examples/devtools` Next.js demo showing the full devtools panel wired up to an AI chat endpoint and a component catalog (#273)
+- **Action observer and devtools flag in core** — `@json-render/core` now exposes an action observer and a devtools enablement flag that adapters use to mirror actions and stream events into the panel (#273)
+
+### Bug Fixes
+
+- **Zod 4 schema formatting** — `formatZodType` now correctly handles `z.record()`, `z.default()`, and `z.literal()` types from Zod 4, which previously produced incorrect or empty output in generated prompts and schemas (#239)
+
+### Improvements
+
+- **Zod 4 test coverage** — Added unit tests for `formatZodType` covering record, default, and literal types to guard against regressions (#272)
+
+### Contributors
+
+- @ctate
+- @mvanhorn
+
+## 0.17.0
+
+### New Features
+
+- **Gaussian Splatting** — Added `GaussianSplat` component to `@json-render/react-three-fiber`, bringing the component count to 20. Composable with all existing R3F components (lights, controls, post-processing) via drei's Splat loader (#259)
+- **Standalone gsplat example** — Experimental demo app showcasing Gaussian Splatting with gsplat.js (no Three.js dependency), featuring scene selector, live JSON spec viewer, and progress indicator (#259)
+- **R3F gsplat example** — Demo app with five scenes: splat showroom, splat with primitives, multi-splat, post-processing effects, and animated floating splat (#259)
+
+### Improved
+
+- **AI output quality** — Improved prompt output and schema generation for more reliable AI-generated specs (#268)
+
+### Contributors
+
+- @ctate
+- @willmanzoli
+
+## 0.16.0
+
+### Improved
+
+- **Release process** — Switched from Changesets to a manual single-PR release workflow with changelog markers and automatic npm publish on version bump

README.md

@@ -15,8 +15,20 @@ npm install @json-render/core @json-render/react-native
 npm install @json-render/core @json-render/remotion
 # or for PDF documents
 npm install @json-render/core @json-render/react-pdf
+# or for HTML email
+npm install @json-render/core @json-render/react-email @react-email/components @react-email/render
 # or for Vue
 npm install @json-render/core @json-render/vue
+# or for Svelte
+npm install @json-render/core @json-render/svelte
+# or for SolidJS
+npm install @json-render/core @json-render/solid
+# or for terminal UIs
+npm install @json-render/core @json-render/ink ink react
+# or for full Next.js apps (routes, layouts, SSR, metadata)
+npm install @json-render/core @json-render/react @json-render/next
+# or for 3D scenes (and gaussian splatting via the GaussianSplat component)
+npm install @json-render/core @json-render/react-three-fiber @react-three/fiber @react-three/drei three
 ```
 
 ## Why json-render?
@@ -26,7 +38,7 @@ json-render is a **Generative UI** framework: AI generates interfaces from natur
 - **Guardrailed** - AI can only use components in your catalog
 - **Predictable** - JSON output matches your schema, every time
 - **Fast** - Stream and render progressively as the model responds
-- **Cross-Platform** - React, Vue (web), React Native (mobile) from the same catalog
+- **Cross-Platform** - React, Vue, Svelte, Solid (web), React Native (mobile) from the same catalog
 - **Batteries Included** - 36 pre-built shadcn/ui components ready to use
 
 ## Quick Start
@@ -87,9 +99,7 @@ const { registry } = defineRegistry(catalog, {
       </div>
     ),
     Button: ({ props, emit }) => (
-      <button onClick={() => emit("press")}>
-        {props.label}
-      </button>
+      <button onClick={() => emit("press")}>{props.label}</button>
     ),
   },
 });
@@ -109,19 +119,36 @@ function Dashboard({ spec }) {
 
 ## Packages
 
-| Package | Description |
-|---------|-------------|
-| `@json-render/core` | Schemas, catalogs, AI prompts, dynamic props, SpecStream utilities |
-| `@json-render/react` | React renderer, contexts, hooks |
-| `@json-render/vue` | Vue 3 renderer, composables, providers |
-| `@json-render/shadcn` | 36 pre-built shadcn/ui components (Radix UI + Tailwind CSS) |
-| `@json-render/react-native` | React Native renderer with standard mobile components |
-| `@json-render/remotion` | Remotion video renderer, timeline schema |
-| `@json-render/react-pdf` | React PDF renderer for generating PDF documents from specs |
-| `@json-render/redux` | Redux / Redux Toolkit adapter for `StateStore` |
-| `@json-render/zustand` | Zustand adapter for `StateStore` |
-| `@json-render/jotai` | Jotai adapter for `StateStore` |
-| `@json-render/xstate-store` | XState Store (atom) adapter for `StateStore` |
+| Package                     | Description                                                            |
+| --------------------------- | ---------------------------------------------------------------------- |
+| `@json-render/core`         | Schemas, catalogs, AI prompts, dynamic props, SpecStream utilities     |
+| `@json-render/react`        | React renderer, contexts, hooks                                        |
+| `@json-render/vue`          | Vue 3 renderer, composables, providers                                 |
+| `@json-render/svelte`       | Svelte 5 renderer with runes-based reactivity                          |
+| `@json-render/solid`        | SolidJS renderer with fine-grained reactive contexts                   |
+| `@json-render/shadcn`       | 36 pre-built shadcn/ui components (Radix UI + Tailwind CSS)            |
+| `@json-render/shadcn-svelte`| 36 pre-built shadcn-svelte components (Svelte 5 + Tailwind CSS)        |
+| `@json-render/react-three-fiber` | React Three Fiber renderer for 3D scenes (20 built-in components, including GaussianSplat)  |
+| `@json-render/react-native` | React Native renderer with standard mobile components                  |
+| `@json-render/next`         | Next.js renderer — JSON becomes full apps with routes, layouts, SSR    |
+| `@json-render/remotion`     | Remotion video renderer, timeline schema                               |
+| `@json-render/react-pdf`    | React PDF renderer for generating PDF documents from specs             |
+| `@json-render/react-email`  | React Email renderer for HTML/plain-text emails from specs             |
+| `@json-render/ink`          | Ink terminal renderer with built-in components for interactive TUIs.   |
+| `@json-render/image`        | Image renderer for SVG/PNG output (OG images, social cards) via Satori |
+| `@json-render/directives`   | Pre-built custom directives — $format, $math, $concat, $count, $truncate, $pluralize, $join, $t (i18n) |
+| `@json-render/codegen`      | Utilities for generating code from json-render UI trees                |
+| `@json-render/devtools`     | Framework-agnostic devtools core — panel UI, event store, picker, stream taps |
+| `@json-render/devtools-react`   | React adapter for `@json-render/devtools` (drop-in `<JsonRenderDevtools />`)     |
+| `@json-render/devtools-vue`     | Vue adapter for `@json-render/devtools`                                           |
+| `@json-render/devtools-svelte`  | Svelte adapter for `@json-render/devtools`                                        |
+| `@json-render/devtools-solid`   | SolidJS adapter for `@json-render/devtools`                                       |
+| `@json-render/redux`        | Redux / Redux Toolkit adapter for `StateStore`                         |
+| `@json-render/zustand`      | Zustand adapter for `StateStore`                                       |
+| `@json-render/jotai`        | Jotai adapter for `StateStore`                                         |
+| `@json-render/xstate`       | XState Store (atom) adapter for `StateStore`                           |
+| `@json-render/mcp`          | MCP Apps integration for Claude, ChatGPT, Cursor, VS Code              |
+| `@json-render/yaml`         | YAML wire format with streaming parser, edit modes, AI SDK transform   |
 
 ## Renderers
 
@@ -150,7 +177,7 @@ const spec = {
 
 // defineRegistry creates a type-safe component registry
 const { registry } = defineRegistry(catalog, { components });
-<Renderer spec={spec} registry={registry} />
+<Renderer spec={spec} registry={registry} />;
 ```
 
 ### Vue (UI)
@@ -173,6 +200,43 @@ const { registry } = defineRegistry(catalog, {
 // <Renderer :spec="spec" :registry="registry" />
 ```
 
+### Svelte (UI)
+
+```typescript
+import { defineRegistry, Renderer } from "@json-render/svelte";
+import { schema } from "@json-render/svelte/schema";
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: ({ props, children }) => /* Svelte 5 snippet */,
+    Button: ({ props, emit }) => /* Svelte 5 snippet */,
+  },
+});
+
+// In your Svelte component:
+// <Renderer spec={spec} registry={registry} />
+```
+
+### Solid (UI)
+
+```tsx
+import { defineRegistry, Renderer } from "@json-render/solid";
+import { schema } from "@json-render/solid/schema";
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: (renderProps) => <div>{renderProps.children}</div>,
+    Button: (renderProps) => (
+      <button onClick={() => renderProps.emit("press")}>
+        {renderProps.element.props.label as string}
+      </button>
+    ),
+  },
+});
+
+<Renderer spec={spec} registry={registry} />;
+```
+
 ### shadcn/ui (Web)
 
 ```tsx
@@ -203,7 +267,7 @@ const { registry } = defineRegistry(catalog, {
   },
 });
 
-<Renderer spec={spec} registry={registry} />
+<Renderer spec={spec} registry={registry} />;
 ```
 
 ### React Native (Mobile)
@@ -224,23 +288,40 @@ const catalog = defineCatalog(schema, {
 });
 
 const { registry } = defineRegistry(catalog, { components: {} });
-<Renderer spec={spec} registry={registry} />
+<Renderer spec={spec} registry={registry} />;
 ```
 
 ### Remotion (Video)
 
 ```tsx
 import { Player } from "@remotion/player";
-import { Renderer, schema, standardComponentDefinitions } from "@json-render/remotion";
+import {
+  Renderer,
+  schema,
+  standardComponentDefinitions,
+} from "@json-render/remotion";
 
 // Timeline spec format
 const spec = {
-  composition: { id: "video", fps: 30, width: 1920, height: 1080, durationInFrames: 300 },
+  composition: {
+    id: "video",
+    fps: 30,
+    width: 1920,
+    height: 1080,
+    durationInFrames: 300,
+  },
   tracks: [{ id: "main", name: "Main", type: "video", enabled: true }],
   clips: [
-    { id: "clip-1", trackId: "main", component: "TitleCard", props: { title: "Hello" }, from: 0, durationInFrames: 90 }
+    {
+      id: "clip-1",
+      trackId: "main",
+      component: "TitleCard",
+      props: { title: "Hello" },
+      from: 0,
+      durationInFrames: 90,
+    },
   ],
-  audio: { tracks: [] }
+  audio: { tracks: [] },
 };
 
 <Player
@@ -250,7 +331,7 @@ const spec = {
   fps={spec.composition.fps}
   compositionWidth={spec.composition.width}
   compositionHeight={spec.composition.height}
-/>
+/>;
 ```
 
 ### React PDF (Documents)
@@ -261,7 +342,11 @@ import { renderToBuffer } from "@json-render/react-pdf";
 const spec = {
   root: "doc",
   elements: {
-    doc: { type: "Document", props: { title: "Invoice" }, children: ["page-1"] },
+    doc: {
+      type: "Document",
+      props: { title: "Invoice" },
+      children: ["page-1"],
+    },
     "page-1": {
       type: "Page",
       props: { size: "A4" },
@@ -275,8 +360,14 @@ const spec = {
     "table-1": {
       type: "Table",
       props: {
-        columns: [{ header: "Item", width: "60%" }, { header: "Price", width: "40%", align: "right" }],
-        rows: [["Widget A", "$10.00"], ["Widget B", "$25.00"]],
+        columns: [
+          { header: "Item", width: "60%" },
+          { header: "Price", width: "40%", align: "right" },
+        ],
+        rows: [
+          ["Widget A", "$10.00"],
+          ["Widget B", "$25.00"],
+        ],
       },
       children: [],
     },
@@ -287,6 +378,255 @@ const spec = {
 const buffer = await renderToBuffer(spec);
 ```
 
+### React Email (Email)
+
+```typescript
+import { renderToHtml } from "@json-render/react-email";
+import { schema, standardComponentDefinitions } from "@json-render/react-email";
+import { defineCatalog } from "@json-render/core";
+
+const catalog = defineCatalog(schema, {
+  components: standardComponentDefinitions,
+});
+
+const spec = {
+  root: "html-1",
+  elements: {
+    "html-1": {
+      type: "Html",
+      props: { lang: "en", dir: "ltr" },
+      children: ["head-1", "body-1"],
+    },
+    "head-1": { type: "Head", props: {}, children: [] },
+    "body-1": {
+      type: "Body",
+      props: { style: { backgroundColor: "#f6f9fc" } },
+      children: ["container-1"],
+    },
+    "container-1": {
+      type: "Container",
+      props: {
+        style: { maxWidth: "600px", margin: "0 auto", padding: "20px" },
+      },
+      children: ["heading-1", "text-1"],
+    },
+    "heading-1": { type: "Heading", props: { text: "Welcome" }, children: [] },
+    "text-1": {
+      type: "Text",
+      props: { text: "Thanks for signing up." },
+      children: [],
+    },
+  },
+};
+
+const html = await renderToHtml(spec);
+```
+
+### Image (SVG/PNG)
+
+```typescript
+import { renderToPng } from "@json-render/image/render";
+
+const spec = {
+  root: "frame",
+  elements: {
+    frame: {
+      type: "Frame",
+      props: { width: 1200, height: 630, backgroundColor: "#1a1a2e" },
+      children: ["heading"],
+    },
+    heading: {
+      type: "Heading",
+      props: { text: "Hello World", level: "h1", color: "#ffffff" },
+      children: [],
+    },
+  },
+};
+
+// Render to PNG (requires @resvg/resvg-js)
+const png = await renderToPng(spec, { fonts });
+
+// Or render to SVG string
+import { renderToSvg } from "@json-render/image/render";
+const svg = await renderToSvg(spec, { fonts });
+```
+
+### Three.js (3D)
+
+```tsx
+import { defineCatalog } from "@json-render/core";
+import { schema, defineRegistry } from "@json-render/react";
+import {
+  threeComponentDefinitions,
+  threeComponents,
+  ThreeCanvas,
+} from "@json-render/react-three-fiber";
+
+const catalog = defineCatalog(schema, {
+  components: {
+    Box: threeComponentDefinitions.Box,
+    Sphere: threeComponentDefinitions.Sphere,
+    AmbientLight: threeComponentDefinitions.AmbientLight,
+    DirectionalLight: threeComponentDefinitions.DirectionalLight,
+    GaussianSplat: threeComponentDefinitions.GaussianSplat,
+    OrbitControls: threeComponentDefinitions.OrbitControls,
+  },
+  actions: {},
+});
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Box: threeComponents.Box,
+    Sphere: threeComponents.Sphere,
+    AmbientLight: threeComponents.AmbientLight,
+    DirectionalLight: threeComponents.DirectionalLight,
+    GaussianSplat: threeComponents.GaussianSplat,
+    OrbitControls: threeComponents.OrbitControls,
+  },
+});
+
+<ThreeCanvas
+  spec={spec}
+  registry={registry}
+  shadows
+  camera={{ position: [5, 5, 5], fov: 50 }}
+  style={{ width: "100%", height: "100vh" }}
+/>;
+```
+
+### Next.js (Full Apps)
+
+```typescript
+import type { NextAppSpec } from "@json-render/next";
+import { createNextApp } from "@json-render/next/server";
+import { NextAppProvider } from "@json-render/next";
+
+const spec: NextAppSpec = {
+  metadata: { title: { default: "My App", template: "%s | My App" } },
+  layouts: {
+    main: {
+      root: "shell",
+      elements: {
+        shell: { type: "Container", props: {}, children: ["nav", "slot"] },
+        nav: { type: "NavBar", props: {}, children: [] },
+        slot: { type: "Slot", props: {}, children: [] },
+      },
+    },
+  },
+  routes: {
+    "/": {
+      layout: "main",
+      metadata: { title: "Home" },
+      page: {
+        root: "hero",
+        elements: {
+          hero: { type: "Card", props: { title: "Welcome" }, children: [] },
+        },
+      },
+    },
+  },
+};
+
+// Server: creates Page, generateMetadata, generateStaticParams
+const app = createNextApp({ spec });
+
+// Client: wrap your layout with NextAppProvider
+// <NextAppProvider registry={registry} handlers={handlers}>
+//   {children}
+// </NextAppProvider>
+```
+
+### shadcn-svelte (Svelte)
+
+```typescript
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/svelte/schema";
+import { defineRegistry, Renderer } from "@json-render/svelte";
+import { shadcnComponentDefinitions } from "@json-render/shadcn-svelte/catalog";
+import { shadcnComponents } from "@json-render/shadcn-svelte";
+
+const catalog = defineCatalog(schema, {
+  components: {
+    Card: shadcnComponentDefinitions.Card,
+    Stack: shadcnComponentDefinitions.Stack,
+    Heading: shadcnComponentDefinitions.Heading,
+    Button: shadcnComponentDefinitions.Button,
+  },
+  actions: {},
+});
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: shadcnComponents.Card,
+    Stack: shadcnComponents.Stack,
+    Heading: shadcnComponents.Heading,
+    Button: shadcnComponents.Button,
+  },
+});
+
+// In your Svelte component:
+// <Renderer spec={spec} registry={registry} />
+```
+
+### Devtools
+
+Drop-in inspector panel for any json-render app. Spec tree, state editor, action log, stream log, catalog browser, DOM picker.
+
+```tsx
+// React
+import { JsonRenderDevtools } from "@json-render/devtools-react";
+
+<JSONUIProvider registry={registry} handlers={handlers}>
+  <Renderer spec={spec} registry={registry} />
+  <JsonRenderDevtools spec={spec} catalog={catalog} messages={messages} />
+</JSONUIProvider>;
+```
+
+Floating toggle appears bottom-right. Hotkey: `Ctrl`/`Cmd` + `Shift` + `J`. Tree-shakes to `null` in production.
+
+Available for React, Vue, Svelte, and Solid — swap `@json-render/devtools-react` for the adapter that matches your renderer.
+
+### Ink (Terminal)
+
+```tsx
+import { defineCatalog } from "@json-render/core";
+import {
+  schema,
+  standardComponentDefinitions,
+  standardActionDefinitions,
+  defineRegistry,
+  Renderer,
+  JSONUIProvider,
+} from "@json-render/ink";
+
+const catalog = defineCatalog(schema, {
+  components: { ...standardComponentDefinitions },
+  actions: standardActionDefinitions,
+});
+
+const { registry } = defineRegistry(catalog, { components: {} });
+
+const spec = {
+  root: "card-1",
+  elements: {
+    "card-1": {
+      type: "Card",
+      props: { title: "Status" },
+      children: ["status-1"],
+    },
+    "status-1": {
+      type: "StatusLine",
+      props: { label: "Build", status: "success" },
+      children: [],
+    },
+  },
+};
+
+<JSONUIProvider initialState={{}}>
+  <Renderer spec={spec} registry={registry} />
+</JSONUIProvider>;
+```
+
 ## Features
 
 ### Streaming (SpecStream)
@@ -336,16 +676,26 @@ Any prop value can be data-driven using expressions:
 {
   "type": "Icon",
   "props": {
-    "name": { "$cond": { "$state": "/activeTab", "eq": "home" }, "$then": "home", "$else": "home-outline" },
-    "color": { "$cond": { "$state": "/activeTab", "eq": "home" }, "$then": "#007AFF", "$else": "#8E8E93" }
+    "name": {
+      "$cond": { "$state": "/activeTab", "eq": "home" },
+      "$then": "home",
+      "$else": "home-outline"
+    },
+    "color": {
+      "$cond": { "$state": "/activeTab", "eq": "home" },
+      "$then": "#007AFF",
+      "$else": "#8E8E93"
+    }
   }
 }
 ```
 
-Two expression forms:
+Expression forms:
 
 - **`{ "$state": "/state/key" }`** - reads a value from the state model
-- **`{ "$cond": <condition>, "$then": <value>, "$else": <value> }`** - evaluates a condition (same syntax as visibility conditions) and picks a branch
+- **`{ "$cond": <condition>, "$then": <value>, "$else": <value> }`** - evaluates a condition and picks a branch
+- **`{ "$template": "Hello, ${/user/name}!" }`** - interpolates state values into strings
+- **`{ "$computed": "fn", "args": { ... } }`** - calls a registered function with resolved args
 
 ### Actions
 
@@ -354,13 +704,38 @@ Components can trigger actions, including the built-in `setState` action:
 ```json
 {
   "type": "Pressable",
-  "props": { "action": "setState", "actionParams": { "statePath": "/activeTab", "value": "home" } },
+  "props": {
+    "action": "setState",
+    "actionParams": { "statePath": "/activeTab", "value": "home" }
+  },
   "children": ["home-icon"]
 }
 ```
 
 The `setState` action updates the state model directly, which re-evaluates visibility conditions and dynamic prop expressions.
 
+### State Watchers
+
+React to state changes by triggering actions:
+
+```json
+{
+  "type": "Select",
+  "props": {
+    "value": { "$bindState": "/form/country" },
+    "options": ["US", "Canada", "UK"]
+  },
+  "watch": {
+    "/form/country": {
+      "action": "loadCities",
+      "params": { "country": { "$state": "/form/country" } }
+    }
+  }
+}
+```
+
+`watch` is a top-level field on elements (sibling of `type`/`props`/`children`). Watchers fire when the watched value changes, not on initial render.
+
 ---
 
 ## Demo
@@ -374,9 +749,15 @@ pnpm dev
 
 - http://json-render.localhost:1355 - Docs & Playground
 - http://dashboard-demo.json-render.localhost:1355 - Example Dashboard
+- http://react-email-demo.json-render.localhost:1355 - React Email Example
 - http://remotion-demo.json-render.localhost:1355 - Remotion Video Example
 - Chat Example: run `pnpm dev` in `examples/chat`
+- Svelte Example: run `pnpm dev` in `examples/svelte` or `examples/svelte-chat`
+- Vue Example: run `pnpm dev` in `examples/vue`
+- Vite Renderers (React + Vue + Svelte + Solid): run `pnpm dev` in `examples/vite-renderers`
 - React Native example: run `npx expo start` in `examples/react-native`
+- Gaussian Splatting (R3F): run `pnpm dev` in `examples/react-three-fiber-gsplat`
+- Gaussian Splatting (experimental standalone gsplat.js demo): run `pnpm dev` in `examples/gsplat`
 
 ## How It Works
 
@@ -385,7 +766,7 @@ flowchart LR
     A[User Prompt] --> B[AI + Catalog]
     B --> C[JSON Spec]
     C --> D[Renderer]
-    
+
     B -.- E([guardrailed])
     C -.- F([predictable])
     D -.- G([streamed])

apps/web/CHANGELOG.md

@@ -1,5 +1,90 @@
 # web
 
+## 0.1.11
+
+### Patch Changes
+
+- Updated dependencies [519a538]
+  - @json-render/core@0.16.0
+  - @json-render/codegen@0.16.0
+  - @json-render/react@0.16.0
+  - @json-render/yaml@0.16.0
+
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/codegen@0.15.0
+  - @json-render/react@0.15.0
+  - @json-render/yaml@0.15.0
+
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/codegen@0.14.1
+  - @json-render/react@0.14.1
+  - @json-render/yaml@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/yaml@0.14.0
+  - @json-render/codegen@0.14.0
+  - @json-render/react@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/codegen@0.13.0
+  - @json-render/react@0.13.0
+
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [54a1ecf]
+  - @json-render/core@0.12.1
+  - @json-render/codegen@0.12.1
+  - @json-render/react@0.12.1
+
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/codegen@0.12.0
+  - @json-render/react@0.12.0
+
+## 0.1.4
+
+### Patch Changes
+
+- Updated dependencies [3f1e71e]
+  - @json-render/core@0.11.0
+  - @json-render/codegen@0.11.0
+  - @json-render/react@0.11.0
+
+## 0.1.3
+
+### Patch Changes
+
+- Updated dependencies [9cef4e9]
+  - @json-render/core@0.10.0
+  - @json-render/react@0.10.0
+  - @json-render/codegen@0.10.0
+
 ## 0.1.2
 
 ### Patch Changes

apps/web/app/(main)/docs/ai-sdk/page.mdx

@@ -3,7 +3,7 @@ export const metadata = pageMetadata("docs/ai-sdk")
 
 # AI SDK Integration
 
-Use json-render with the [Vercel AI SDK](https://sdk.vercel.ai) for seamless streaming. json-render supports two modes: **Generate** (standalone UI) and **Chat** (UI embedded in conversation). See [Generation Modes](/docs/generation-modes) for a detailed comparison.
+Use json-render with the [Vercel AI SDK](https://sdk.vercel.ai) for seamless streaming. json-render supports two modes: **Standalone** (standalone UI) and **Inline** (UI embedded in conversation). See [Generation Modes](/docs/generation-modes) for a detailed comparison.
 
 ## Installation
 
@@ -11,9 +11,9 @@ Use json-render with the [Vercel AI SDK](https://sdk.vercel.ai) for seamless str
 npm install ai @ai-sdk/react
 ```
 
-## Generate Mode
+## Standalone Mode
 
-In generate mode, the AI outputs only JSONL patches. The entire response is a UI spec with no prose. This is the default mode and is ideal for playgrounds, builders, and dashboard generators.
+In standalone mode, the AI outputs only JSONL patches. The entire response is a UI spec with no prose. This is the default mode and is ideal for playgrounds, builders, and dashboard generators.
 
 ### API Route
 
@@ -73,9 +73,9 @@ function GenerativeUI() {
 }
 ```
 
-## Chat Mode
+## Inline Mode
 
-In chat mode, the AI responds conversationally and includes JSONL patches inline. Text-only replies are allowed when no UI is needed. This is ideal for chatbots, copilots, and educational assistants.
+In inline mode, the AI responds conversationally and includes JSONL patches inline. Text-only replies are allowed when no UI is needed. This is ideal for chatbots, copilots, and educational assistants.
 
 ### API Route
 
@@ -96,7 +96,7 @@ export async function POST(req: Request) {
 
   const result = streamText({
     model: yourModel,
-    system: catalog.prompt({ mode: "chat" }),
+    system: catalog.prompt({ mode: "inline" }),
     messages,
   });
 
@@ -182,13 +182,13 @@ const systemPrompt = catalog.prompt({
 });
 ```
 
-### Chat Mode Prompt
+### Inline Mode Prompt
 
 ```typescript
-const chatPrompt = catalog.prompt({ mode: "chat" });
+const inlinePrompt = catalog.prompt({ mode: "inline" });
 ```
 
-In chat mode, the prompt instructs the AI to respond conversationally first, then include JSONL patches on their own lines when UI is needed. Text-only replies are allowed.
+In inline mode, the prompt instructs the AI to respond conversationally first, then include JSONL patches on their own lines when UI is needed. Text-only replies are allowed.
 
 ## Which Mode?
 
@@ -197,8 +197,8 @@ In chat mode, the prompt instructs the AI to respond conversationally first, the
     <thead>
       <tr>
         <th></th>
-        <th>Generate</th>
-        <th>Chat</th>
+        <th>Standalone</th>
+        <th>Inline</th>
       </tr>
     </thead>
     <tbody>
@@ -215,7 +215,7 @@ In chat mode, the prompt instructs the AI to respond conversationally first, the
       <tr>
         <td>System prompt</td>
         <td><code>catalog.prompt()</code></td>
-        <td><code>{"catalog.prompt({ mode: \"chat\" })"}</code></td>
+        <td><code>{"catalog.prompt({ mode: \"inline\" })"}</code></td>
       </tr>
       <tr>
         <td>Stream utility</td>

apps/web/app/(main)/docs/api/core/page.mdx

@@ -75,7 +75,8 @@ interface Catalog {
 interface PromptOptions {
   system?: string;           // Custom system message intro
   customRules?: string[];    // Additional rules to append
-  mode?: "generate" | "chat"; // Output mode (default: "generate")
+  mode?: "standalone" | "inline" | "generate" | "chat"; // Output mode (default: "standalone")
+  editModes?: EditMode[];    // Edit modes to document in prompt (default: ["patch"])
 }
 
 interface SpecValidationResult<T> {
@@ -370,7 +371,7 @@ Most users should use `pipeJsonRender()` instead, which wraps this transform for
 
 ### createMixedStreamParser
 
-Parse a mixed stream of text and JSONL patches (used for Chat + GenUI mode):
+Parse a mixed stream of text and JSONL patches (used for Inline mode):
 
 ```typescript
 import { createMixedStreamParser } from '@json-render/core';
@@ -389,7 +390,7 @@ parser.flush();
 
 ### pipeJsonRender
 
-Pipe an AI SDK `UIMessageStream` through the json-render transform. Lines that parse as JSONL patches are emitted as `data-spec` parts; everything else passes through as text. Used in Chat mode API routes.
+Pipe an AI SDK `UIMessageStream` through the json-render transform. Lines that parse as JSONL patches are emitted as `data-spec` parts; everything else passes through as text. Used in Inline mode API routes.
 
 ```typescript
 import { pipeJsonRender } from '@json-render/core';
@@ -403,7 +404,7 @@ const stream = createUIMessageStream({
 return createUIMessageStreamResponse({ stream });
 ```
 
-See [Generation Modes](/docs/generation-modes) for full Chat mode setup.
+See [Generation Modes](/docs/generation-modes) for full Inline mode setup.
 
 ### SpecStream Types
 
@@ -480,9 +481,10 @@ function buildUserPrompt(options: UserPromptOptions): string
 
 interface UserPromptOptions {
   prompt: string;                        // The user's text prompt
-  currentSpec?: Spec | null;             // Existing spec to refine (triggers patch-only mode)
+  currentSpec?: Spec | null;             // Existing spec to refine (triggers edit mode)
   state?: Record<string, unknown> | null; // Runtime state context to include
   maxPromptLength?: number;              // Max length for user text (truncates before wrapping)
+  editModes?: EditMode[];                // Edit modes for refinement (default: ["patch"])
 }
 ```
 
@@ -492,14 +494,15 @@ interface UserPromptOptions {
 const userPrompt = buildUserPrompt({ prompt: "create a todo app" });
 ```
 
-### Refinement (patch-only mode)
+### Refinement (edit modes)
 
-When `currentSpec` is provided, the prompt instructs the AI to output only the patches needed for the change, not recreate the entire spec:
+When `currentSpec` is provided, the prompt instructs the AI to use the specified edit modes instead of recreating the entire spec. Available modes: `"patch"` (RFC 6902), `"merge"` (RFC 7396), and `"diff"` (unified diff).
 
 ```typescript
 const userPrompt = buildUserPrompt({
   prompt: "add a dark mode toggle",
   currentSpec: existingSpec,
+  editModes: ["patch", "merge"],
 });
 ```
 
@@ -514,6 +517,93 @@ const userPrompt = buildUserPrompt({
 });
 ```
 
+## Edit Modes
+
+Universal edit mode utilities for modifying existing specs. Used by `buildUserPrompt` internally and available for direct use.
+
+```typescript
+import {
+  buildEditInstructions,
+  buildEditUserPrompt,
+  isNonEmptySpec,
+  type EditMode,
+  type EditConfig,
+} from '@json-render/core';
+
+type EditMode = "patch" | "merge" | "diff";
+```
+
+### buildEditInstructions
+
+Generate the prompt section describing available edit modes. Supports both JSON and YAML formats.
+
+```typescript
+function buildEditInstructions(config: EditConfig, format: "json" | "yaml"): string
+
+const instructions = buildEditInstructions({ modes: ["patch", "merge"] }, "json");
+```
+
+### buildEditUserPrompt
+
+Build a user prompt for editing an existing spec. Includes the current spec (with line numbers when diff mode is enabled) and mode-specific instructions.
+
+```typescript
+function buildEditUserPrompt(options: BuildEditUserPromptOptions): string
+
+interface BuildEditUserPromptOptions {
+  prompt: string;
+  currentSpec?: Spec | null;
+  config?: EditConfig;
+  format: "json" | "yaml";
+  maxPromptLength?: number;
+  serializer?: (spec: Spec) => string;
+}
+```
+
+### isNonEmptySpec
+
+Check whether a value is a non-empty spec (has a root string and at least one element).
+
+```typescript
+function isNonEmptySpec(spec: unknown): spec is Spec
+```
+
+## Deep Merge and Diff
+
+Format-agnostic utilities for merging and diffing spec objects.
+
+### deepMergeSpec
+
+Deep-merge with RFC 7396 semantics: `null` deletes, arrays replace, objects recurse. Neither input is mutated.
+
+```typescript
+import { deepMergeSpec } from '@json-render/core';
+
+function deepMergeSpec(
+  base: Record<string, unknown>,
+  patch: Record<string, unknown>
+): Record<string, unknown>
+
+const merged = deepMergeSpec(currentSpec, { elements: { main: { props: { title: "New" } } } });
+```
+
+### diffToPatches
+
+Generate RFC 6902 JSON Patch operations that transform one object into another. Arrays are compared shallowly and replaced atomically; plain objects recurse.
+
+```typescript
+import { diffToPatches } from '@json-render/core';
+
+function diffToPatches(
+  oldObj: Record<string, unknown>,
+  newObj: Record<string, unknown>,
+  basePath?: string
+): JsonPatch[]
+
+const patches = diffToPatches(oldSpec, newSpec);
+// [{ op: "replace", path: "/elements/main/props/title", value: "New Title" }]
+```
+
 ## evaluateVisibility
 
 Evaluates a visibility condition against the state model.

apps/web/app/(main)/docs/api/devtools-react/page.mdx

@@ -0,0 +1,59 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/devtools-react")
+
+# @json-render/devtools-react
+
+React adapter for the json-render devtools. Drop-in `<JsonRenderDevtools />` component.
+
+See the [Devtools guide](/docs/devtools) for the drop-in walkthrough.
+
+## JsonRenderDevtools
+
+```tsx
+import { JsonRenderDevtools } from "@json-render/devtools-react";
+
+<JSONUIProvider registry={registry} handlers={handlers}>
+  <Renderer spec={spec} registry={registry} />
+  <JsonRenderDevtools spec={spec} catalog={catalog} messages={messages} />
+</JSONUIProvider>
+```
+
+### Props
+
+```tsx
+interface JsonRenderDevtoolsProps {
+  /** Current spec being rendered. */
+  spec?: Spec | null;
+  /** Catalog definition (required for the Catalog panel). */
+  catalog?: Catalog | null;
+  /** AI SDK useChat messages array. */
+  messages?: readonly UIMessage[];
+  /** Start the panel open. Default: false. */
+  initialOpen?: boolean;
+  /** Floating toggle position. */
+  position?: "bottom-right" | "bottom-left" | "right";
+  /** Toggle keybinding, or false to disable. Default: "mod+shift+j". */
+  hotkey?: string | false;
+  /** Ring buffer size. Default: 500. */
+  bufferSize?: number;
+  /** Fires for every devtools event. */
+  onEvent?: (evt: DevtoolsEvent) => void;
+}
+```
+
+In production builds the component renders `null`.
+
+## useJsonRenderDevtools
+
+```tsx
+import { useJsonRenderDevtools } from "@json-render/devtools-react";
+
+const devtools = useJsonRenderDevtools();
+devtools?.open();
+devtools?.toggle();
+devtools?.close();
+devtools?.clear();
+devtools?.recordEvent({ kind: "stream-text", at: Date.now(), text: "hi" });
+```
+
+Access the running devtools instance from anywhere in the React tree. Returns `null` in production or before the component has mounted.

apps/web/app/(main)/docs/api/devtools-solid/page.mdx

@@ -0,0 +1,38 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/devtools-solid")
+
+# @json-render/devtools-solid
+
+SolidJS adapter for the json-render devtools. Drop-in `<JsonRenderDevtools />` component.
+
+See the [Devtools guide](/docs/devtools) for the drop-in walkthrough.
+
+## JsonRenderDevtools
+
+```tsx
+import { JsonRenderDevtools } from "@json-render/devtools-solid";
+
+<JSONUIProvider registry={registry}>
+  <Renderer spec={spec()} registry={registry} />
+  <JsonRenderDevtools
+    spec={spec()}
+    catalog={catalog}
+    messages={messages()}
+  />
+</JSONUIProvider>
+```
+
+### Props
+
+Same shape as the React adapter:
+
+- `spec`
+- `catalog`
+- `messages`
+- `initialOpen`
+- `position`
+- `hotkey`
+- `bufferSize`
+- `onEvent`
+
+In production builds the component renders `null`.

apps/web/app/(main)/docs/api/devtools-svelte/page.mdx

@@ -0,0 +1,36 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/devtools-svelte")
+
+# @json-render/devtools-svelte
+
+Svelte adapter for the json-render devtools. Drop-in `<JsonRenderDevtools />` component.
+
+See the [Devtools guide](/docs/devtools) for the drop-in walkthrough.
+
+## JsonRenderDevtools
+
+```svelte
+<script>
+  import { JsonRenderDevtools } from "@json-render/devtools-svelte";
+</script>
+
+<JSONUIProvider {registry}>
+  <Renderer {spec} {registry} />
+  <JsonRenderDevtools {spec} {catalog} {messages} />
+</JSONUIProvider>
+```
+
+### Props
+
+Same shape as the React adapter:
+
+- `spec`
+- `catalog`
+- `messages`
+- `initialOpen`
+- `position`
+- `hotkey`
+- `bufferSize`
+- `onEvent`
+
+In production builds the component renders nothing.

apps/web/app/(main)/docs/api/devtools-vue/page.mdx

@@ -0,0 +1,38 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/devtools-vue")
+
+# @json-render/devtools-vue
+
+Vue adapter for the json-render devtools. Drop-in `<JsonRenderDevtools />` component.
+
+See the [Devtools guide](/docs/devtools) for the drop-in walkthrough.
+
+## JsonRenderDevtools
+
+```vue
+<script setup>
+import { JsonRenderDevtools } from "@json-render/devtools-vue";
+</script>
+
+<template>
+  <JSONUIProvider :registry="registry">
+    <Renderer :spec="spec" :registry="registry" />
+    <JsonRenderDevtools :spec="spec" :catalog="catalog" :messages="messages" />
+  </JSONUIProvider>
+</template>
+```
+
+### Props
+
+Same shape as the React adapter:
+
+- `spec`
+- `catalog`
+- `messages`
+- `initialOpen`
+- `position`
+- `hotkey`
+- `bufferSize`
+- `onEvent`
+
+In production builds the component renders nothing.

apps/web/app/(main)/docs/api/devtools/page.mdx

@@ -0,0 +1,146 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/devtools")
+
+# @json-render/devtools
+
+Framework-agnostic core for the json-render devtools — vanilla TS panel UI, event store, DOM picker, and stream tap utilities. Every framework-specific adapter package depends on this.
+
+Most users never import from this package directly. Pick the adapter that matches your renderer (`@json-render/devtools-react`, `@json-render/devtools-vue`, etc.) and drop the `<JsonRenderDevtools />` component into your app.
+
+See the [Devtools guide](/docs/devtools) for the drop-in walkthrough.
+
+## Event Store
+
+### createEventStore
+
+```ts
+function createEventStore(options?: { bufferSize?: number }): EventStore
+
+interface EventStore {
+  push: (event: DevtoolsEvent) => void;
+  snapshot: () => DevtoolsEvent[];
+  subscribe: (listener: () => void) => () => void;
+  clear: () => void;
+  size: () => number;
+}
+```
+
+Ring-buffered pub/sub of `DevtoolsEvent`. Shared by every panel and every stream tap.
+
+## Panel
+
+### createPanel
+
+```ts
+function createPanel(options: PanelOptions): PanelHandle
+
+interface PanelHandle {
+  open: () => void;
+  close: () => void;
+  toggle: () => void;
+  isOpen: () => boolean;
+  refresh: () => void;
+  destroy: () => void;
+}
+```
+
+Mount the panel into a host document. Adapters call this internally.
+
+### Panel tabs
+
+Each tab is a factory function that returns a `TabDef`:
+
+```ts
+import {
+  specTab,
+  stateTab,
+  actionsTab,
+  streamTab,
+  catalogTab,
+  pickerTab,
+} from "@json-render/devtools";
+```
+
+## Stream Taps
+
+### tapJsonRenderStream
+
+```ts
+function tapJsonRenderStream(
+  stream: ReadableStream<StreamChunk>,
+  events: EventStore,
+): ReadableStream<StreamChunk>
+```
+
+Mirror the spec patches flowing through a `pipeJsonRender` transform into a devtools event store. Returns the original stream unchanged — the tap just forks a copy.
+
+### tapYamlStream
+
+```ts
+function tapYamlStream(
+  stream: ReadableStream<StreamChunk>,
+  events: EventStore,
+): ReadableStream<StreamChunk>
+```
+
+YAML equivalent of `tapJsonRenderStream`.
+
+### scanMessageParts
+
+```ts
+function scanMessageParts(
+  parts: readonly DataPart[] | undefined,
+  events: EventStore,
+  seen: WeakSet<object>,
+): void
+```
+
+Client-side helper: scan an AI SDK message's `parts` array for spec data parts and push matching events into the store. Idempotent via `seen` — call it on every render of a chat UI.
+
+## Picker
+
+### startPicker
+
+```ts
+function startPicker(options: PickerOptions): PickerSession | null
+
+interface PickerOptions {
+  onPick: (key: string) => void;
+  onCancel?: () => void;
+}
+```
+
+Start a DOM picker session. Hovering paints an outline on any element carrying `data-jr-key`; clicking fires `onPick` with the spec key. Returns `null` in environments without a DOM.
+
+### findElementByKey / highlightElement
+
+```ts
+function findElementByKey(key: string): Element | null
+function highlightElement(key: string, durationMs?: number): void
+```
+
+Look up the live DOM node for a spec element key, or briefly paint an outline around it.
+
+## Types
+
+### DevtoolsEvent
+
+```ts
+type DevtoolsEvent =
+  | { kind: "spec-changed"; at: number; spec: Spec }
+  | { kind: "state-set"; at: number; path: string; prev: unknown; next: unknown }
+  | { kind: "action-dispatched"; at: number; id: string; name: string; params?: unknown }
+  | { kind: "action-settled"; at: number; id: string; ok: boolean; result?: unknown; error?: string; durationMs: number }
+  | { kind: "stream-patch"; at: number; patch: JsonPatch; source: "json" | "yaml" }
+  | { kind: "stream-text"; at: number; text: string }
+  | { kind: "stream-usage"; at: number; usage: TokenUsage }
+  | { kind: "stream-lifecycle"; at: number; phase: "start" | "end"; ok?: boolean };
+```
+
+### isProduction
+
+```ts
+function isProduction(): boolean
+```
+
+`true` when `process.env.NODE_ENV === "production"`. Adapters use this to short-circuit to a null render.

apps/web/app/(main)/docs/api/directives/page.mdx

@@ -0,0 +1,407 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/directives")
+
+# @json-render/directives
+
+Pre-built custom directives for `@json-render/core`. Drop them into your catalog and renderer to add formatting, math, string manipulation, and i18n.
+
+## Install
+
+```bash
+npm install @json-render/directives
+```
+
+## Quick Start
+
+```typescript
+import { standardDirectives } from '@json-render/directives';
+
+// Wire into prompt generation
+const prompt = catalog.prompt({ directives: standardDirectives });
+
+// Wire into the renderer
+<JSONUIProvider spec={spec} directives={standardDirectives}>
+  ...
+</JSONUIProvider>
+```
+
+To add factory directives like `createI18nDirective`, spread the array:
+
+```typescript
+import { standardDirectives, createI18nDirective } from '@json-render/directives';
+
+const directives = [...standardDirectives, createI18nDirective(config)];
+```
+
+## Directives
+
+### `$format` — Locale-aware value formatting
+
+Formats values using `Intl` formatters. Supports `date`, `currency`, `number`, and `percent`.
+
+```json
+{ "$format": "currency", "value": { "$state": "/cart/total" }, "currency": "USD" }
+```
+
+```json
+{ "$format": "date", "value": { "$state": "/user/createdAt" } }
+```
+
+```json
+{ "$format": "number", "value": 1234567, "notation": "compact" }
+```
+
+```json
+{ "$format": "percent", "value": 0.75 }
+```
+
+Relative dates are also supported:
+
+```json
+{ "$format": "date", "value": { "$state": "/post/createdAt" }, "style": "relative" }
+```
+
+This returns strings like `"3h ago"`, `"2d from now"`, or `"just now"`.
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>$format</code></td>
+      <td><code>{'\"date\" | \"currency\" | \"number\" | \"percent\"'}</code></td>
+      <td>Format type.</td>
+    </tr>
+    <tr>
+      <td><code>value</code></td>
+      <td><code>unknown</code></td>
+      <td>Value to format. Accepts any dynamic expression.</td>
+    </tr>
+    <tr>
+      <td><code>locale</code></td>
+      <td><code>string</code></td>
+      <td>Optional. Locale for formatting (e.g. <code>"en-US"</code>).</td>
+    </tr>
+    <tr>
+      <td><code>currency</code></td>
+      <td><code>string</code></td>
+      <td>Optional. Currency code for <code>"currency"</code> format. Default: <code>"USD"</code>.</td>
+    </tr>
+    <tr>
+      <td><code>notation</code></td>
+      <td><code>string</code></td>
+      <td>Optional. Notation for <code>"number"</code> format (e.g. <code>"compact"</code>).</td>
+    </tr>
+    <tr>
+      <td><code>style</code></td>
+      <td><code>string</code></td>
+      <td>Optional. Set to <code>"relative"</code> for relative date formatting.</td>
+    </tr>
+    <tr>
+      <td><code>options</code></td>
+      <td><code>{'Record<string, unknown>'}</code></td>
+      <td>Optional. Extra <code>Intl</code> formatter options.</td>
+    </tr>
+  </tbody>
+</table>
+
+### `$math` — Arithmetic operations
+
+Performs arithmetic on one or two operands. Operands accept any dynamic expression.
+
+```json
+{ "$math": "add", "a": { "$state": "/subtotal" }, "b": { "$state": "/tax" } }
+```
+
+```json
+{ "$math": "round", "a": 3.7 }
+```
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>$math</code></td>
+      <td><code>{'\"add\" | \"subtract\" | \"multiply\" | \"divide\" | \"mod\" | \"min\" | \"max\" | \"round\" | \"floor\" | \"ceil\" | \"abs\"'}</code></td>
+      <td>Operation to perform.</td>
+    </tr>
+    <tr>
+      <td><code>a</code></td>
+      <td><code>unknown</code></td>
+      <td>First operand. Defaults to <code>0</code> if missing.</td>
+    </tr>
+    <tr>
+      <td><code>b</code></td>
+      <td><code>unknown</code></td>
+      <td>Second operand (binary ops only). Defaults to <code>0</code> if missing.</td>
+    </tr>
+  </tbody>
+</table>
+
+Unary operations (`round`, `floor`, `ceil`, `abs`) only use `a`. Division by zero returns `0`.
+
+### `$concat` — String concatenation
+
+Concatenates multiple values into a single string. Each element is resolved then joined.
+
+```json
+{ "$concat": [{ "$state": "/user/firstName" }, " ", { "$state": "/user/lastName" }] }
+```
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>$concat</code></td>
+      <td><code>{'unknown[]'}</code></td>
+      <td>Array of values to concatenate. Each is resolved, converted to string, and joined.</td>
+    </tr>
+  </tbody>
+</table>
+
+### `$count` — Array/string length
+
+Returns the length of an array or string. Returns `0` for other types.
+
+```json
+{ "$count": { "$state": "/cart/items" } }
+```
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>$count</code></td>
+      <td><code>unknown</code></td>
+      <td>Value to count. Accepts arrays and strings.</td>
+    </tr>
+  </tbody>
+</table>
+
+### `$truncate` — Text truncation
+
+Truncates text to a maximum length with a configurable suffix.
+
+```json
+{ "$truncate": { "$state": "/post/body" }, "length": 140, "suffix": "..." }
+```
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>$truncate</code></td>
+      <td><code>unknown</code></td>
+      <td>Value to truncate.</td>
+    </tr>
+    <tr>
+      <td><code>length</code></td>
+      <td><code>number</code></td>
+      <td>Optional. Max character length. Default: <code>100</code>.</td>
+    </tr>
+    <tr>
+      <td><code>suffix</code></td>
+      <td><code>string</code></td>
+      <td>Optional. Suffix to append when truncated. Default: <code>"..."</code>.</td>
+    </tr>
+  </tbody>
+</table>
+
+### `$pluralize` — Singular/plural forms
+
+Selects a singular, plural, or zero form based on a count.
+
+```json
+{ "$pluralize": { "$state": "/cart/itemCount" }, "one": "item", "other": "items", "zero": "no items" }
+```
+
+Output: `"3 items"`, `"1 item"`, or `"no items"`.
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>$pluralize</code></td>
+      <td><code>unknown</code></td>
+      <td>Count value. Accepts dynamic expressions.</td>
+    </tr>
+    <tr>
+      <td><code>one</code></td>
+      <td><code>string</code></td>
+      <td>Singular form label.</td>
+    </tr>
+    <tr>
+      <td><code>other</code></td>
+      <td><code>string</code></td>
+      <td>Plural form label.</td>
+    </tr>
+    <tr>
+      <td><code>zero</code></td>
+      <td><code>string</code></td>
+      <td>Optional. Label for count of zero. If omitted, uses <code>"0 {'<other>'}"</code>.</td>
+    </tr>
+  </tbody>
+</table>
+
+### `$join` — Join array elements
+
+Joins array elements with a separator string.
+
+```json
+{ "$join": { "$state": "/tags" }, "separator": ", " }
+```
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>$join</code></td>
+      <td><code>unknown</code></td>
+      <td>Array to join. Non-array values are converted to string.</td>
+    </tr>
+    <tr>
+      <td><code>separator</code></td>
+      <td><code>string</code></td>
+      <td>Optional. Separator between elements. Default: <code>", "</code>.</td>
+    </tr>
+  </tbody>
+</table>
+
+### `createI18nDirective` — Internationalization
+
+Factory function that creates a `$t` directive for translations with `{'{{param}}'}` interpolation.
+
+```typescript
+import { createI18nDirective } from '@json-render/directives';
+
+const tDirective = createI18nDirective({
+  locale: 'en',
+  messages: {
+    en: { "greeting": "Hello, {'{{name}}'}!", "checkout.submit": "Place Order" },
+    es: { "greeting": "Hola, {'{{name}}'}!", "checkout.submit": "Realizar Pedido" },
+  },
+  fallbackLocale: 'en',
+});
+```
+
+Usage in specs:
+
+```json
+{ "$t": "checkout.submit" }
+```
+
+```json
+{ "$t": "greeting", "params": { "name": { "$state": "/user/name" } } }
+```
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>$t</code></td>
+      <td><code>string</code></td>
+      <td>Translation key.</td>
+    </tr>
+    <tr>
+      <td><code>params</code></td>
+      <td><code>{'Record<string, unknown>'}</code></td>
+      <td>Optional. Interpolation parameters. Values accept dynamic expressions.</td>
+    </tr>
+  </tbody>
+</table>
+
+#### `I18nConfig`
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>locale</code></td>
+      <td><code>string</code></td>
+      <td>Current locale (e.g. <code>"en"</code>).</td>
+    </tr>
+    <tr>
+      <td><code>messages</code></td>
+      <td><code>{'Record<string, Record<string, string>>'}</code></td>
+      <td>Map of locale to key-value translation pairs.</td>
+    </tr>
+    <tr>
+      <td><code>fallbackLocale</code></td>
+      <td><code>string</code></td>
+      <td>Optional. Fallback locale when a key is missing in the current locale.</td>
+    </tr>
+  </tbody>
+</table>
+
+## Composition
+
+Directives compose naturally. Each resolver calls `resolvePropValue` on its inputs, so you can nest directives:
+
+```json
+{
+  "$format": "currency",
+  "value": { "$math": "multiply", "a": { "$state": "/price" }, "b": { "$state": "/qty" } },
+  "currency": "USD"
+}
+```
+
+```json
+{
+  "$pluralize": { "$count": { "$state": "/items" } },
+  "one": "item",
+  "other": "items"
+}
+```

apps/web/app/(main)/docs/api/image/page.mdx

@@ -0,0 +1,364 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/image")
+
+# @json-render/image
+
+Image renderer. Turn JSON specs into SVG and PNG images using [Satori](https://github.com/vercel/satori).
+
+## Install
+
+```bash
+npm install @json-render/core @json-render/image
+```
+
+For PNG output, also install the optional peer dependency:
+
+```bash
+npm install @resvg/resvg-js
+```
+
+See the [Image example](https://github.com/vercel-labs/json-render/tree/main/examples/image) for a full working example.
+
+## schema
+
+The image element schema for image specs. Use with `defineCatalog` from core.
+
+```typescript
+import { defineCatalog } from '@json-render/core';
+import { schema, standardComponentDefinitions } from '@json-render/image';
+
+const catalog = defineCatalog(schema, {
+  components: standardComponentDefinitions,
+});
+```
+
+## Render Functions
+
+Server-side functions for producing image output. Both accept a spec and optional `RenderOptions`.
+
+```typescript
+import { renderToSvg, renderToPng } from '@json-render/image/render';
+
+const svg = await renderToSvg(spec, { fonts });
+
+const png = await renderToPng(spec, { fonts });
+await writeFile('output.png', png);
+```
+
+### RenderOptions
+
+```typescript
+interface RenderOptions {
+  registry?: ComponentRegistry;
+  includeStandard?: boolean;  // default: true
+  state?: Record<string, unknown>;
+  fonts?: SatoriOptions['fonts'];
+  width?: number;
+  height?: number;
+}
+```
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Type</th>
+      <th>Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>fonts</code></td>
+      <td><code>{"SatoriOptions['fonts']"}</code></td>
+      <td><code>[]</code></td>
+      <td>Font data for text rendering (required for meaningful output)</td>
+    </tr>
+    <tr>
+      <td><code>width</code></td>
+      <td><code>number</code></td>
+      <td>Frame prop</td>
+      <td>Override the output image width</td>
+    </tr>
+    <tr>
+      <td><code>height</code></td>
+      <td><code>number</code></td>
+      <td>Frame prop</td>
+      <td>Override the output image height</td>
+    </tr>
+    <tr>
+      <td><code>registry</code></td>
+      <td><code>{"Record<string, ComponentRenderer>"}</code></td>
+      <td><code>{"{}"}</code></td>
+      <td>Custom component map (merged with standard components)</td>
+    </tr>
+    <tr>
+      <td><code>includeStandard</code></td>
+      <td><code>boolean</code></td>
+      <td><code>true</code></td>
+      <td>Include built-in standard components</td>
+    </tr>
+    <tr>
+      <td><code>state</code></td>
+      <td><code>{"Record<string, unknown>"}</code></td>
+      <td><code>{"{}"}</code></td>
+      <td>Initial state for <code>$state</code> / <code>$cond</code> dynamic prop resolution</td>
+    </tr>
+  </tbody>
+</table>
+
+## Standard Components
+
+### Root
+
+#### Frame
+
+Root image container. Defines the output image dimensions and background. Must be the root element.
+
+```typescript
+{
+  width: number;
+  height: number;
+  backgroundColor: string | null;
+  padding: number | null;
+  display: "flex" | "none" | null;
+  flexDirection: "row" | "column" | null;
+  alignItems: "flex-start" | "center" | "flex-end" | "stretch" | null;
+  justifyContent: "flex-start" | "center" | "flex-end" | "space-between" | "space-around" | null;
+}
+```
+
+### Layout
+
+#### Box
+
+Generic container with padding, margin, background, border, and flex alignment. Supports absolute positioning.
+
+```typescript
+{
+  padding: number | null;
+  paddingTop: number | null;
+  paddingBottom: number | null;
+  paddingLeft: number | null;
+  paddingRight: number | null;
+  margin: number | null;
+  backgroundColor: string | null;
+  borderWidth: number | null;
+  borderColor: string | null;
+  borderRadius: number | null;
+  flex: number | null;
+  width: number | string | null;
+  height: number | string | null;
+  alignItems: "flex-start" | "center" | "flex-end" | "stretch" | null;
+  justifyContent: "flex-start" | "center" | "flex-end" | "space-between" | "space-around" | null;
+  flexDirection: "row" | "column" | null;
+  position: "relative" | "absolute" | null;
+  top: number | null;
+  left: number | null;
+  right: number | null;
+  bottom: number | null;
+  overflow: "visible" | "hidden" | null;
+}
+```
+
+#### Row
+
+Horizontal flex layout with optional wrapping.
+
+```typescript
+{
+  gap: number | null;
+  alignItems: "flex-start" | "center" | "flex-end" | "stretch" | null;
+  justifyContent: "flex-start" | "center" | "flex-end" | "space-between" | "space-around" | null;
+  padding: number | null;
+  flex: number | null;
+  wrap: boolean | null;
+}
+```
+
+#### Column
+
+Vertical flex layout.
+
+```typescript
+{
+  gap: number | null;
+  alignItems: "flex-start" | "center" | "flex-end" | "stretch" | null;
+  justifyContent: "flex-start" | "center" | "flex-end" | "space-between" | "space-around" | null;
+  padding: number | null;
+  flex: number | null;
+}
+```
+
+### Content
+
+#### Heading
+
+Heading text at various levels. h1 is largest, h4 is smallest.
+
+```typescript
+{
+  text: string;
+  level: "h1" | "h2" | "h3" | "h4" | null;
+  color: string | null;
+  align: "left" | "center" | "right" | null;
+  letterSpacing: number | string | null;
+  lineHeight: number | null;
+}
+```
+
+#### Text
+
+Body text with configurable size, color, weight, and alignment.
+
+```typescript
+{
+  text: string;
+  fontSize: number | null;
+  color: string | null;
+  align: "left" | "center" | "right" | null;
+  fontWeight: "normal" | "bold" | null;
+  fontStyle: "normal" | "italic" | null;
+  lineHeight: number | null;
+  letterSpacing: number | string | null;
+  textDecoration: "none" | "underline" | "line-through" | null;
+}
+```
+
+#### Image
+
+Image from a URL with optional dimensions and fit.
+
+```typescript
+{
+  src: string;
+  width: number | null;
+  height: number | null;
+  borderRadius: number | null;
+  objectFit: "contain" | "cover" | "fill" | "none" | null;
+}
+```
+
+### Decorative
+
+#### Divider
+
+Horizontal line separator.
+
+```typescript
+{
+  color: string | null;
+  thickness: number | null;
+  marginTop: number | null;
+  marginBottom: number | null;
+}
+```
+
+#### Spacer
+
+Empty vertical space.
+
+```typescript
+{
+  height: number | null;
+}
+```
+
+## Catalog Definitions
+
+Pre-built definitions for creating image catalogs:
+
+```typescript
+import { standardComponentDefinitions } from '@json-render/image/catalog';
+import { defineCatalog } from '@json-render/core';
+import { schema } from '@json-render/image';
+
+const catalog = defineCatalog(schema, {
+  components: {
+    ...standardComponentDefinitions,
+    // Add custom components
+  },
+});
+```
+
+## Server-Safe Import
+
+Import schema and catalog definitions without pulling in React or Satori:
+
+```typescript
+import { schema, standardComponentDefinitions } from '@json-render/image/server';
+```
+
+## Sub-path Exports
+
+<table>
+  <thead>
+    <tr>
+      <th>Export</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>@json-render/image</code></td>
+      <td>Full package: schema, renderer, components, render functions</td>
+    </tr>
+    <tr>
+      <td><code>@json-render/image/server</code></td>
+      <td>Schema and catalog definitions only (no React or Satori)</td>
+    </tr>
+    <tr>
+      <td><code>@json-render/image/catalog</code></td>
+      <td>Standard component definitions and types</td>
+    </tr>
+    <tr>
+      <td><code>@json-render/image/render</code></td>
+      <td>Server-side render functions only</td>
+    </tr>
+  </tbody>
+</table>
+
+## Types
+
+<table>
+  <thead>
+    <tr>
+      <th>Export</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>ImageSchema</code></td>
+      <td>Schema type for image specs</td>
+    </tr>
+    <tr>
+      <td><code>ImageSpec</code></td>
+      <td>Spec type for image output</td>
+    </tr>
+    <tr>
+      <td><code>RenderOptions</code></td>
+      <td>Options for render functions</td>
+    </tr>
+    <tr>
+      <td><code>ComponentRenderProps</code></td>
+      <td>Props passed to component render functions</td>
+    </tr>
+    <tr>
+      <td><code>ComponentRenderer</code></td>
+      <td>Component render function type</td>
+    </tr>
+    <tr>
+      <td><code>ComponentRegistry</code></td>
+      <td>Map of component names to render functions</td>
+    </tr>
+    <tr>
+      <td><code>StandardComponentDefinitions</code></td>
+      <td>Type of the standard component definitions object</td>
+    </tr>
+    <tr>
+      <td><code>StandardComponentProps{'<K>'}</code></td>
+      <td>Inferred props type for a standard component by name</td>
+    </tr>
+  </tbody>
+</table>

apps/web/app/(main)/docs/api/ink/page.mdx

@@ -0,0 +1,293 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/ink")
+
+# @json-render/ink
+
+Terminal renderer for [Ink](https://github.com/vadimdemedes/ink) with multiple standard components, providers, hooks, and streaming support.
+
+## Installation
+
+<PackageInstall packages="@json-render/core @json-render/ink" />
+
+Peer dependencies: `react ^18.0.0 || ^19.0.0`, `ink ^6.0.0`, and `zod ^4.0.0`.
+
+<PackageInstall packages="react ink zod" />
+
+## Standard Components
+
+### Layout
+
+<table>
+<thead>
+<tr><th>Component</th><th>Props</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>Box</code></td><td><code>flexDirection</code>, <code>alignItems</code>, <code>justifyContent</code>, <code>gap</code>, <code>padding</code>, <code>margin</code>, <code>borderStyle</code>, <code>borderColor</code>, <code>width</code>, <code>height</code>, <code>display</code>, <code>overflow</code></td><td>Flexbox layout container (like a terminal div)</td></tr>
+<tr><td><code>Spacer</code></td><td>(none)</td><td>Flexible empty space that expands to fill available room</td></tr>
+<tr><td><code>Newline</code></td><td><code>count</code></td><td>Insert blank lines</td></tr>
+</tbody>
+</table>
+
+### Content
+
+<table>
+<thead>
+<tr><th>Component</th><th>Props</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>Text</code></td><td><code>text</code>, <code>color</code>, <code>bold</code>, <code>italic</code>, <code>underline</code>, <code>strikethrough</code>, <code>dimColor</code>, <code>inverse</code>, <code>wrap</code></td><td>Text output with styling</td></tr>
+<tr><td><code>Heading</code></td><td><code>text</code>, <code>level</code> (h1-h4), <code>color</code></td><td>Section heading</td></tr>
+<tr><td><code>Divider</code></td><td><code>character</code>, <code>color</code>, <code>dimColor</code>, <code>title</code>, <code>width</code></td><td>Horizontal separator line with optional title</td></tr>
+<tr><td><code>Badge</code></td><td><code>label</code>, <code>variant</code></td><td>Colored inline label (default, info, success, warning, error)</td></tr>
+<tr><td><code>Spinner</code></td><td><code>label</code>, <code>color</code></td><td>Animated loading spinner</td></tr>
+<tr><td><code>ProgressBar</code></td><td><code>progress</code> (0-1), <code>width</code>, <code>color</code>, <code>label</code></td><td>Horizontal progress bar</td></tr>
+<tr><td><code>StatusLine</code></td><td><code>text</code>, <code>status</code>, <code>icon</code></td><td>Status message with colored icon</td></tr>
+<tr><td><code>KeyValue</code></td><td><code>label</code>, <code>value</code>, <code>labelColor</code>, <code>separator</code></td><td>Key-value pair display</td></tr>
+<tr><td><code>Link</code></td><td><code>url</code>, <code>label</code>, <code>color</code></td><td>Renders a URL as underlined text. Shows "label (url)" when label is provided.</td></tr>
+<tr><td><code>Markdown</code></td><td><code>text</code></td><td>Renders markdown with terminal styling (headings, bold, italic, code, lists, blockquotes, horizontal rules)</td></tr>
+</tbody>
+</table>
+
+### Data
+
+<table>
+<thead>
+<tr><th>Component</th><th>Props</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>Table</code></td><td><code>columns</code>, <code>rows</code>, <code>borderStyle</code>, <code>headerColor</code></td><td>Tabular data with headers</td></tr>
+<tr><td><code>List</code></td><td><code>items</code>, <code>ordered</code>, <code>bulletChar</code>, <code>spacing</code></td><td>Bulleted or numbered list</td></tr>
+<tr><td><code>ListItem</code></td><td><code>title</code>, <code>subtitle</code>, <code>leading</code>, <code>trailing</code></td><td>Structured list row</td></tr>
+<tr><td><code>Card</code></td><td><code>title</code>, <code>borderStyle</code>, <code>borderColor</code>, <code>padding</code></td><td>Bordered container with optional title</td></tr>
+<tr><td><code>Sparkline</code></td><td><code>data</code>, <code>width</code>, <code>color</code>, <code>label</code>, <code>min</code>, <code>max</code></td><td>Inline sparkline chart using Unicode blocks (▁▂▃▄▅▆▇█)</td></tr>
+<tr><td><code>BarChart</code></td><td><code>data</code> (label/value/color), <code>width</code>, <code>showValues</code>, <code>showPercentage</code></td><td>Horizontal bar chart for comparing values</td></tr>
+</tbody>
+</table>
+
+### Interactive
+
+<table>
+<thead>
+<tr><th>Component</th><th>Props</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>TextInput</code></td><td><code>placeholder</code>, <code>value</code> (use <code>$bindState</code>), <code>label</code>, <code>mask</code></td><td>Text input field. Press Enter to submit.</td></tr>
+<tr><td><code>Select</code></td><td><code>options</code>, <code>value</code> (use <code>$bindState</code>), <code>label</code></td><td>Arrow-key selection menu</td></tr>
+<tr><td><code>MultiSelect</code></td><td><code>options</code>, <code>value</code> (use <code>$bindState</code>), <code>label</code>, <code>min</code>, <code>max</code></td><td>Multi-selection menu. Space to toggle, Enter to confirm.</td></tr>
+<tr><td><code>ConfirmInput</code></td><td><code>message</code>, <code>defaultValue</code>, <code>yesLabel</code>, <code>noLabel</code></td><td>Yes/No confirmation prompt. Press Y or N.</td></tr>
+<tr><td><code>Tabs</code></td><td><code>tabs</code>, <code>value</code> (use <code>$bindState</code>), <code>color</code></td><td>Tab bar navigation with left/right arrow keys. Place child content inside with visible conditions.</td></tr>
+</tbody>
+</table>
+
+## Providers
+
+### JSONUIProvider
+
+Convenience wrapper around all providers: `StateProvider` → `VisibilityProvider` → `ValidationProvider` → `ActionProvider` → `FocusProvider`.
+
+```tsx
+import { JSONUIProvider, Renderer } from "@json-render/ink";
+
+<JSONUIProvider initialState={{}} handlers={handlers}>
+  <Renderer spec={spec} registry={registry} />
+</JSONUIProvider>
+```
+
+### StateProvider
+
+```tsx
+<StateProvider initialState={object} onStateChange={fn}>
+  {children}
+</StateProvider>
+```
+
+<table>
+<thead>
+<tr><th>Prop</th><th>Type</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>store</code></td><td><code>StateStore</code></td><td>External store (controlled mode). When provided, <code>initialState</code> and <code>onStateChange</code> are ignored.</td></tr>
+<tr><td><code>initialState</code></td><td><code>Record&lt;string, unknown&gt;</code></td><td>Initial state model (uncontrolled mode).</td></tr>
+<tr><td><code>onStateChange</code></td><td><code>{'(changes: Array<{ path: string; value: unknown }>) => void'}</code></td><td>Callback when state changes (uncontrolled mode).</td></tr>
+</tbody>
+</table>
+
+#### External Store (Controlled Mode)
+
+Pass a `StateStore` to bypass internal state and wire json-render to any state management:
+
+```tsx
+import { createStateStore } from "@json-render/ink";
+
+const store = createStateStore({ count: 0 });
+
+<StateProvider store={store}>
+  {children}
+</StateProvider>
+
+// Mutate from anywhere — components re-render automatically:
+store.set("/count", 1);
+```
+
+The `store` prop is also available on `JSONUIProvider` and `createRenderer`.
+
+### ActionProvider
+
+```tsx
+<ActionProvider handlers={Record<string, ActionHandler>} navigate={fn}>
+  {children}
+</ActionProvider>
+```
+
+Built-in actions: `setState`, `pushState`, `removeState`, `log`, `exit`. Custom handlers override built-ins. Includes a terminal confirmation dialog (press Y/N) for actions with `confirm`.
+
+### VisibilityProvider
+
+```tsx
+<VisibilityProvider>
+  {children}
+</VisibilityProvider>
+```
+
+### ValidationProvider
+
+```tsx
+<ValidationProvider>
+  {children}
+</ValidationProvider>
+```
+
+### FocusProvider
+
+```tsx
+<FocusProvider>
+  {children}
+</FocusProvider>
+```
+
+Manages Tab-cycling focus between interactive components (TextInput, Select). Supports `useFocusDisable` to suppress cycling during modal dialogs.
+
+## defineRegistry
+
+Create a type-safe component registry. Standard components are built-in; only register custom components.
+
+```tsx
+import { defineRegistry, type Components } from "@json-render/ink";
+
+const { registry, handlers, executeAction } = defineRegistry(catalog, {
+  components: {
+    MyWidget: ({ props }) => <Text>{props.label}</Text>,
+  } as Components<typeof catalog>,
+  actions: {
+    submit: async (params, setState, state) => {
+      // custom action logic
+    },
+  },
+});
+```
+
+`handlers` is designed for `JSONUIProvider`/`ActionProvider`. `executeAction` is an imperative helper.
+
+## createRenderer
+
+Higher-level helper that wraps `Renderer` + all providers into a single component.
+
+```tsx
+import { createRenderer } from "@json-render/ink";
+
+const UIRenderer = createRenderer(catalog, components);
+
+<UIRenderer spec={spec} state={initialState} />;
+```
+
+## Hooks
+
+### useUIStream
+
+```typescript
+const {
+  spec,         // Spec | null - current UI state
+  isStreaming,  // boolean - true while streaming
+  error,        // Error | null
+  send,         // (prompt: string, context?: Record<string, unknown>) => Promise<void>
+  stop,         // () => void - abort the current stream
+  clear,        // () => void - reset spec and error
+} = useUIStream({
+  api: string,
+  onComplete?: (spec: Spec) => void,
+  onError?: (error: Error) => void,
+  fetch?: (url: string, init?: RequestInit) => Promise<Response>,
+  validate?: boolean,
+  maxRetries?: number,
+});
+```
+
+### useStateStore
+
+```typescript
+const { state, get, set, update } = useStateStore();
+```
+
+### useStateValue
+
+```typescript
+const value = useStateValue(path: string);
+```
+
+### useBoundProp
+
+```typescript
+const [value, setValue] = useBoundProp(resolvedValue, bindingPath);
+```
+
+### useActions
+
+```typescript
+const { execute } = useActions();
+```
+
+### useIsVisible
+
+```typescript
+const isVisible = useIsVisible(condition?: VisibilityCondition);
+```
+
+### useFocus
+
+```typescript
+const { isActive, id } = useFocus();
+```
+
+### useFocusDisable
+
+```typescript
+useFocusDisable(disabled: boolean);
+```
+
+Suppresses Tab-cycling while `disabled` is true (e.g., during a modal dialog).
+
+## Catalog Exports
+
+```typescript
+import { standardComponentDefinitions, standardActionDefinitions } from "@json-render/ink/catalog";
+import { schema } from "@json-render/ink/schema";
+```
+
+<table>
+<thead>
+<tr><th>Export</th><th>Purpose</th></tr>
+</thead>
+<tbody>
+<tr><td><code>standardComponentDefinitions</code></td><td>Catalog definitions for all 19 standard components</td></tr>
+<tr><td><code>standardActionDefinitions</code></td><td>Catalog definitions for standard actions (setState, pushState, removeState, log, exit)</td></tr>
+<tr><td><code>schema</code></td><td>Ink element tree schema</td></tr>
+</tbody>
+</table>
+
+## Server Export
+
+```typescript
+import { schema, standardComponentDefinitions, standardActionDefinitions } from "@json-render/ink/server";
+```
+
+Re-exports the schema and catalog definitions for server-side usage (e.g., building system prompts).

apps/web/app/(main)/docs/api/jotai/page.mdx

@@ -0,0 +1,104 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/jotai")
+
+# @json-render/jotai
+
+Jotai adapter for json-render's `StateStore` interface.
+
+## Installation
+
+```bash
+npm install @json-render/jotai @json-render/core @json-render/react jotai
+```
+
+## jotaiStateStore
+
+Create a `StateStore` backed by a Jotai atom.
+
+```typescript
+import { jotaiStateStore } from "@json-render/jotai";
+```
+
+### Options
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Type</th>
+      <th>Required</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>atom</code></td>
+      <td><code>{'WritableAtom<StateModel, [StateModel], void>'}</code></td>
+      <td>Yes</td>
+      <td>A writable atom holding the state model.</td>
+    </tr>
+    <tr>
+      <td><code>store</code></td>
+      <td>Jotai <code>Store</code></td>
+      <td>No</td>
+      <td>The Jotai store instance. Defaults to a new store created internally. Pass your own to share state with <code>{'<Provider>'}</code>.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Example
+
+```typescript
+import { atom } from "jotai";
+import { jotaiStateStore } from "@json-render/jotai";
+import { StateProvider } from "@json-render/react";
+
+const uiAtom = atom<Record<string, unknown>>({ count: 0 });
+const store = jotaiStateStore({ atom: uiAtom });
+```
+
+```tsx
+<StateProvider store={store}>
+  {/* json-render reads/writes go through Jotai */}
+</StateProvider>
+```
+
+### Shared Jotai Store
+
+If your app already uses a Jotai `<Provider>` with a custom store, pass it so both json-render and your components share the same state:
+
+```typescript
+import { atom, createStore } from "jotai";
+import { Provider as JotaiProvider } from "jotai/react";
+import { jotaiStateStore } from "@json-render/jotai";
+import { StateProvider } from "@json-render/react";
+
+const jStore = createStore();
+const uiAtom = atom<Record<string, unknown>>({ count: 0 });
+const store = jotaiStateStore({ atom: uiAtom, store: jStore });
+```
+
+```tsx
+<JotaiProvider store={jStore}>
+  <StateProvider store={store}>
+    {/* Both json-render and useAtom() see the same state */}
+  </StateProvider>
+</JotaiProvider>
+```
+
+## Re-exports
+
+<table>
+  <thead>
+    <tr>
+      <th>Export</th>
+      <th>Source</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>StateStore</code></td>
+      <td><code>@json-render/core</code></td>
+    </tr>
+  </tbody>
+</table>

apps/web/app/(main)/docs/api/mcp/page.mdx

@@ -0,0 +1,247 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/mcp")
+
+# @json-render/mcp
+
+MCP Apps integration for json-render. Serve json-render UIs as interactive [MCP Apps](https://modelcontextprotocol.io/docs/extensions/apps) inside Claude, ChatGPT, Cursor, VS Code, and other MCP-capable clients.
+
+## Install
+
+```bash
+npm install @json-render/mcp @json-render/core @modelcontextprotocol/sdk
+```
+
+For the iframe-side React UI, also install:
+
+```bash
+npm install @json-render/react react react-dom
+```
+
+See the [MCP example](https://github.com/vercel-labs/json-render/tree/main/examples/mcp) for a full working example.
+
+## Overview
+
+MCP Apps let MCP servers return interactive HTML UIs that render directly inside chat conversations. `@json-render/mcp` bridges json-render catalogs with the MCP Apps protocol:
+
+1. Your **catalog** defines which components and actions the AI can use
+2. The **MCP server** exposes the catalog as a tool with the spec schema
+3. The **bundled HTML** renders json-render specs inside the host's sandboxed iframe
+4. The AI generates a spec, the host renders it, and users interact with the live UI
+
+## Server API
+
+### createMcpApp
+
+Create a fully-configured MCP server. This is the main entry point.
+
+```typescript
+import { createMcpApp } from "@json-render/mcp";
+import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
+import fs from "node:fs";
+
+const server = createMcpApp({
+  name: "My Dashboard",
+  version: "1.0.0",
+  catalog: myCatalog,
+  html: fs.readFileSync("dist/index.html", "utf-8"),
+});
+
+await server.connect(new StdioServerTransport());
+```
+
+#### CreateMcpAppOptions
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>name</code></td>
+      <td><code>string</code></td>
+      <td>Server name shown in client UIs</td>
+    </tr>
+    <tr>
+      <td><code>version</code></td>
+      <td><code>string</code></td>
+      <td>Server version</td>
+    </tr>
+    <tr>
+      <td><code>catalog</code></td>
+      <td><code>Catalog</code></td>
+      <td>json-render catalog defining available components</td>
+    </tr>
+    <tr>
+      <td><code>html</code></td>
+      <td><code>string</code></td>
+      <td>Self-contained HTML for the iframe UI</td>
+    </tr>
+    <tr>
+      <td><code>tool</code></td>
+      <td><code>McpToolOptions</code></td>
+      <td>Optional tool name/title/description overrides</td>
+    </tr>
+  </tbody>
+</table>
+
+### registerJsonRenderTool
+
+Register a json-render tool on an existing `McpServer`. Use this when you need to add json-render to a server that has other tools.
+
+```typescript
+import { registerJsonRenderTool } from "@json-render/mcp";
+
+registerJsonRenderTool(server, {
+  catalog,
+  name: "render-ui",
+  title: "Render UI",
+  description: "Render an interactive UI",
+  resourceUri: "ui://render-ui/view.html",
+});
+```
+
+### registerJsonRenderResource
+
+Register the UI resource that serves the bundled HTML.
+
+```typescript
+import { registerJsonRenderResource } from "@json-render/mcp";
+
+registerJsonRenderResource(server, {
+  resourceUri: "ui://render-ui/view.html",
+  html: bundledHtml,
+});
+```
+
+## Client API (`@json-render/mcp/app`)
+
+These exports run inside the sandboxed iframe rendered by the MCP host.
+
+### useJsonRenderApp
+
+React hook that connects to the MCP host, listens for tool results, and maintains the current json-render spec.
+
+```tsx
+import { useJsonRenderApp } from "@json-render/mcp/app";
+import { JSONUIProvider, Renderer } from "@json-render/react";
+
+function McpAppView({ registry }) {
+  const { spec, loading, connected, error } = useJsonRenderApp({
+    name: "my-app",
+    version: "1.0.0",
+  });
+
+  if (error) return <div>Error: {error.message}</div>;
+  if (!spec) return <div>Waiting...</div>;
+
+  return (
+    <JSONUIProvider registry={registry} initialState={spec.state ?? {}}>
+      <Renderer spec={spec} registry={registry} loading={loading} />
+    </JSONUIProvider>
+  );
+}
+```
+
+#### UseJsonRenderAppReturn
+
+<table>
+  <thead>
+    <tr>
+      <th>Field</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>spec</code></td>
+      <td><code>{'Spec | null'}</code></td>
+      <td>Current json-render spec</td>
+    </tr>
+    <tr>
+      <td><code>loading</code></td>
+      <td><code>boolean</code></td>
+      <td>Whether the spec is still being received</td>
+    </tr>
+    <tr>
+      <td><code>connected</code></td>
+      <td><code>boolean</code></td>
+      <td>Whether connected to the host</td>
+    </tr>
+    <tr>
+      <td><code>connecting</code></td>
+      <td><code>boolean</code></td>
+      <td>Whether currently connecting</td>
+    </tr>
+    <tr>
+      <td><code>error</code></td>
+      <td><code>{'Error | null'}</code></td>
+      <td>Connection error, if any</td>
+    </tr>
+    <tr>
+      <td><code>app</code></td>
+      <td><code>{'App | null'}</code></td>
+      <td>The underlying MCP App instance</td>
+    </tr>
+    <tr>
+      <td><code>callServerTool</code></td>
+      <td><code>{'(name, args?) => Promise<void>'}</code></td>
+      <td>Call an MCP server tool and update spec from result</td>
+    </tr>
+  </tbody>
+</table>
+
+### buildAppHtml
+
+Generate a self-contained HTML page from bundled JavaScript and CSS.
+
+```typescript
+import { buildAppHtml } from "@json-render/mcp/app";
+import fs from "node:fs";
+
+const html = buildAppHtml({
+  title: "Dashboard",
+  js: fs.readFileSync("dist/app.js", "utf-8"),
+  css: fs.readFileSync("dist/app.css", "utf-8"),
+});
+```
+
+## Client Configuration
+
+### Cursor
+
+Add to `.cursor/mcp.json`:
+
+```json
+{
+  "mcpServers": {
+    "json-render": {
+      "command": "npx",
+      "args": ["tsx", "path/to/server.ts", "--stdio"]
+    }
+  }
+}
+```
+
+### Claude Desktop
+
+Add to `~/Library/Application Support/Claude/claude_desktop_config.json`:
+
+```json
+{
+  "mcpServers": {
+    "json-render": {
+      "command": "npx",
+      "args": ["tsx", "/absolute/path/to/server.ts", "--stdio"]
+    }
+  }
+}
+```
+
+## Supported Clients
+
+MCP Apps are supported by Claude (web and desktop), ChatGPT, VS Code (GitHub Copilot), Cursor, Goose, and Postman.

apps/web/app/(main)/docs/api/next/page.mdx

@@ -0,0 +1,280 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/next")
+
+# @json-render/next
+
+Next.js renderer. JSON becomes full Next.js applications with routes, layouts, metadata, and SSR.
+
+## Installation
+
+```bash
+npm install @json-render/core @json-render/react @json-render/next
+```
+
+## schema
+
+The Next.js app schema for multi-page specs. Use with `defineCatalog` from core.
+
+```typescript
+import { defineCatalog } from '@json-render/core';
+import { schema } from '@json-render/next/server';
+import { z } from 'zod';
+
+const catalog = defineCatalog(schema, {
+  components: {
+    Card: {
+      props: z.object({ title: z.string() }),
+      description: 'Card container',
+    },
+    NavBar: {
+      props: z.object({ links: z.array(z.object({ href: z.string(), label: z.string() })) }),
+      description: 'Navigation bar',
+    },
+  },
+  actions: {},
+});
+```
+
+## createNextApp
+
+Create all exports needed for a Next.js `[[...slug]]` catch-all route.
+
+```typescript
+import { createNextApp } from '@json-render/next/server';
+
+const { Page, generateMetadata, generateStaticParams } = createNextApp({
+  spec: myAppSpec,
+  loaders: {
+    loadPost: async ({ slug }) => {
+      const post = await db.post.findUnique({ where: { slug } });
+      return { post };
+    },
+  },
+});
+```
+
+### Options
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>spec</code></td>
+      <td><code>{'NextAppSpec | (() => NextAppSpec | Promise<NextAppSpec>)'}</code></td>
+      <td>The application spec (static or dynamic)</td>
+    </tr>
+    <tr>
+      <td><code>loaders</code></td>
+      <td><code>{'Record<string, LoaderFn>'}</code></td>
+      <td>Server-side data loaders keyed by name</td>
+    </tr>
+  </tbody>
+</table>
+
+### Returns
+
+<table>
+  <thead>
+    <tr>
+      <th>Export</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>Page</code></td>
+      <td>Async Server Component for <code>page.tsx</code></td>
+    </tr>
+    <tr>
+      <td><code>generateMetadata</code></td>
+      <td>Metadata generator for Next.js SEO</td>
+    </tr>
+    <tr>
+      <td><code>generateStaticParams</code></td>
+      <td>Static params for pre-rendering at build time</td>
+    </tr>
+  </tbody>
+</table>
+
+## NextAppSpec
+
+The top-level spec defining an entire Next.js application.
+
+```typescript
+interface NextAppSpec {
+  metadata?: NextMetadata;
+  routes: Record<string, NextRouteSpec>;
+  layouts?: Record<string, Spec>;
+  state?: Record<string, unknown>;
+}
+```
+
+### Route Patterns
+
+Routes use Next.js URL conventions:
+
+<table>
+  <thead>
+    <tr>
+      <th>Pattern</th>
+      <th>Example Match</th>
+      <th>Params</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>/</code></td>
+      <td><code>/</code></td>
+      <td><code>{'{}'}</code></td>
+    </tr>
+    <tr>
+      <td><code>/about</code></td>
+      <td><code>/about</code></td>
+      <td><code>{'{}'}</code></td>
+    </tr>
+    <tr>
+      <td><code>/blog/[slug]</code></td>
+      <td><code>/blog/hello</code></td>
+      <td><code>{'{ slug: "hello" }'}</code></td>
+    </tr>
+    <tr>
+      <td><code>/docs/[...path]</code></td>
+      <td><code>/docs/a/b/c</code></td>
+      <td><code>{'{ path: ["a","b","c"] }'}</code></td>
+    </tr>
+    <tr>
+      <td><code>/app/[[...path]]</code></td>
+      <td><code>/app</code> or <code>/app/x/y</code></td>
+      <td><code>{'{ path: [] }'}</code> or <code>{'{ path: ["x","y"] }'}</code></td>
+    </tr>
+  </tbody>
+</table>
+
+## NextAppProvider
+
+Client component that provides the component registry and action handlers to all pages.
+
+```tsx
+import { NextAppProvider } from '@json-render/next';
+
+export default function Layout({ children }) {
+  return (
+    <NextAppProvider registry={registry} handlers={handlers}>
+      {children}
+    </NextAppProvider>
+  );
+}
+```
+
+## Built-in Components
+
+### Slot
+
+Placeholder in layouts where page content is rendered. Every layout MUST include a Slot.
+
+```json
+{ "type": "Slot", "props": {}, "children": [] }
+```
+
+### Link
+
+Client-side navigation wrapping `next/link`.
+
+```json
+{ "type": "Link", "props": { "href": "/about" }, "children": ["link-text"] }
+```
+
+## Built-in Actions
+
+<table>
+  <thead>
+    <tr>
+      <th>Action</th>
+      <th>Params</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>setState</code></td>
+      <td><code>{'{ statePath, value }'}</code></td>
+      <td>Update a value in state</td>
+    </tr>
+    <tr>
+      <td><code>pushState</code></td>
+      <td><code>{'{ statePath, value, clearStatePath? }'}</code></td>
+      <td>Append to array in state</td>
+    </tr>
+    <tr>
+      <td><code>removeState</code></td>
+      <td><code>{'{ statePath, index }'}</code></td>
+      <td>Remove from array by index</td>
+    </tr>
+    <tr>
+      <td><code>navigate</code></td>
+      <td><code>{'{ href }'}</code></td>
+      <td>Client-side navigation</td>
+    </tr>
+  </tbody>
+</table>
+
+## Server Utilities
+
+### matchRoute
+
+Match a pathname against a spec's routes.
+
+```typescript
+import { matchRoute } from '@json-render/next/server';
+
+const matched = matchRoute(spec, '/blog/hello-world');
+// { route: NextRouteSpec, pattern: '/blog/[slug]', params: { slug: 'hello-world' } }
+```
+
+### resolveMetadata
+
+Resolve merged metadata for a route.
+
+```typescript
+import { resolveMetadata } from '@json-render/next/server';
+
+const metadata = resolveMetadata(spec, matchedRoute?.route);
+```
+
+### slugToPath
+
+Convert catch-all slug array to pathname.
+
+```typescript
+import { slugToPath } from '@json-render/next/server';
+
+slugToPath(undefined);          // "/"
+slugToPath(['blog', 'hello']);  // "/blog/hello"
+```
+
+## Entry Points
+
+<table>
+  <thead>
+    <tr>
+      <th>Import</th>
+      <th>Contents</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>@json-render/next</code></td>
+      <td>Client components (NextAppProvider, PageRenderer, Link)</td>
+    </tr>
+    <tr>
+      <td><code>@json-render/next/server</code></td>
+      <td>Server utilities (createNextApp, matchRoute, schema)</td>
+    </tr>
+  </tbody>
+</table>

apps/web/app/(main)/docs/api/react-email/page.mdx

@@ -0,0 +1,310 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/react-email")
+
+# @json-render/react-email
+
+React Email renderer. Turn JSON specs into HTML or plain-text emails using `@react-email/components` and `@react-email/render`.
+
+## Install
+
+```bash
+npm install @json-render/core @json-render/react-email @react-email/components @react-email/render
+```
+
+See the [React Email example](https://github.com/vercel-labs/json-render/tree/main/examples/react-email) for a full working example.
+
+## schema
+
+The email element schema for specs. Use with `defineCatalog` from core.
+
+```typescript
+import { defineCatalog } from '@json-render/core';
+import { schema, standardComponentDefinitions } from '@json-render/react-email';
+
+const catalog = defineCatalog(schema, {
+  components: standardComponentDefinitions,
+});
+```
+
+## Render Functions
+
+Server-side functions for producing email output. All accept a spec and optional `RenderOptions`.
+
+```typescript
+import { renderToHtml, renderToPlainText } from '@json-render/react-email';
+
+const html = await renderToHtml(spec);
+
+const plainText = await renderToPlainText(spec);
+```
+
+### RenderOptions
+
+```typescript
+interface RenderOptions {
+  registry?: ComponentRegistry;
+  includeStandard?: boolean;  // default: true
+  state?: Record<string, unknown>;
+}
+```
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>registry</code></td>
+      <td>Custom component map (merged with standard components)</td>
+    </tr>
+    <tr>
+      <td><code>includeStandard</code></td>
+      <td>Include built-in standard components (default: <code>true</code>)</td>
+    </tr>
+    <tr>
+      <td><code>state</code></td>
+      <td>Initial state for <code>$state</code> / <code>$cond</code> dynamic prop resolution</td>
+    </tr>
+  </tbody>
+</table>
+
+## defineRegistry
+
+Create a type-safe component registry from a catalog. Components receive `{ props, children, emit, bindings, loading }`.
+
+```tsx
+import { defineRegistry } from '@json-render/react-email';
+import { Container, Heading, Text } from '@react-email/components';
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: ({ props, children }) => (
+      <Container style={{ padding: 16, backgroundColor: '#fff' }}>
+        <Heading>{props.title}</Heading>
+        {children}
+      </Container>
+    ),
+  },
+});
+
+const html = await renderToHtml(spec, { registry });
+```
+
+## createRenderer
+
+Create a standalone renderer component wired to state, actions, and validation (for interactive previews in the browser).
+
+```typescript
+import { createRenderer } from '@json-render/react-email';
+
+const EmailRenderer = createRenderer(catalog, components);
+```
+
+## Renderer
+
+The main component that renders a spec to React Email elements. Use inside `JSONUIProvider` when you need state, actions, or visibility.
+
+```typescript
+interface RendererProps {
+  spec: Spec | null;
+  registry?: ComponentRegistry;
+  includeStandard?: boolean;  // default: true
+  loading?: boolean;
+  fallback?: ComponentRenderer;
+}
+```
+
+## Standard Components
+
+### Document structure
+
+<table>
+  <thead>
+    <tr>
+      <th>Component</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>Html</code></td>
+      <td>Top-level email wrapper. Must be the root element.</td>
+    </tr>
+    <tr>
+      <td><code>Head</code></td>
+      <td>Email head section. Place inside Html.</td>
+    </tr>
+    <tr>
+      <td><code>Body</code></td>
+      <td>Email body wrapper. Place inside Html.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Layout
+
+<table>
+  <thead>
+    <tr>
+      <th>Component</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>Container</code></td>
+      <td>Constrains content width (e.g. max-width 600px).</td>
+    </tr>
+    <tr>
+      <td><code>Section</code></td>
+      <td>Groups related content.</td>
+    </tr>
+    <tr>
+      <td><code>Row</code></td>
+      <td>Horizontal layout row.</td>
+    </tr>
+    <tr>
+      <td><code>Column</code></td>
+      <td>Column within a Row.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Content
+
+<table>
+  <thead>
+    <tr>
+      <th>Component</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>Heading</code></td>
+      <td>Heading text (h1-h6).</td>
+    </tr>
+    <tr>
+      <td><code>Text</code></td>
+      <td>Body text paragraph.</td>
+    </tr>
+    <tr>
+      <td><code>Link</code></td>
+      <td>Hyperlink with text and href.</td>
+    </tr>
+    <tr>
+      <td><code>Button</code></td>
+      <td>Call-to-action button (link styled as button).</td>
+    </tr>
+    <tr>
+      <td><code>Image</code></td>
+      <td>Image from URL.</td>
+    </tr>
+    <tr>
+      <td><code>Hr</code></td>
+      <td>Horizontal rule separator.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Utility
+
+<table>
+  <thead>
+    <tr>
+      <th>Component</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>Preview</code></td>
+      <td>Preview text for inbox (inside Html).</td>
+    </tr>
+    <tr>
+      <td><code>Markdown</code></td>
+      <td>Renders markdown content as email-safe HTML.</td>
+    </tr>
+  </tbody>
+</table>
+
+## Server-Safe Import
+
+Import schema and catalog definitions without pulling in React or `@react-email/components`:
+
+```typescript
+import { schema, standardComponentDefinitions } from '@json-render/react-email/server';
+```
+
+## Sub-path Exports
+
+<table>
+  <thead>
+    <tr>
+      <th>Export</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>@json-render/react-email</code></td>
+      <td>Full package: schema, renderer, components, render functions</td>
+    </tr>
+    <tr>
+      <td><code>@json-render/react-email/server</code></td>
+      <td>Schema and catalog definitions only (no React)</td>
+    </tr>
+    <tr>
+      <td><code>@json-render/react-email/catalog</code></td>
+      <td>Standard component definitions and types</td>
+    </tr>
+    <tr>
+      <td><code>@json-render/react-email/render</code></td>
+      <td>Server-side render functions only</td>
+    </tr>
+  </tbody>
+</table>
+
+## Types
+
+<table>
+  <thead>
+    <tr>
+      <th>Export</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>ReactEmailSchema</code></td>
+      <td>Schema type for email specs</td>
+    </tr>
+    <tr>
+      <td><code>ReactEmailSpec</code></td>
+      <td>Spec type for email documents</td>
+    </tr>
+    <tr>
+      <td><code>RenderOptions</code></td>
+      <td>Options for render functions</td>
+    </tr>
+    <tr>
+      <td><code>ComponentContext</code></td>
+      <td>Typed component render function context</td>
+    </tr>
+    <tr>
+      <td><code>ComponentFn</code></td>
+      <td>Component render function type</td>
+    </tr>
+    <tr>
+      <td><code>StandardComponentDefinitions</code></td>
+      <td>Type of the standard component definitions object</td>
+    </tr>
+    <tr>
+      <td><code>StandardComponentProps&lt;K&gt;</code></td>
+      <td>Inferred props type for a standard component by name</td>
+    </tr>
+  </tbody>
+</table>

apps/web/app/(main)/docs/api/react-native/page.mdx

@@ -9,54 +9,79 @@ React Native renderer with standard components, providers, and hooks.
 
 ### Layout
 
-| Component | Props | Description |
-|-----------|-------|-------------|
-| `Container` | `padding`, `background`, `borderRadius`, `borderColor`, `flex` | Basic wrapper with styling |
-| `Row` | `gap`, `align`, `justify`, `flex`, `wrap` | Horizontal flex layout |
-| `Column` | `gap`, `align`, `justify`, `flex` | Vertical flex layout |
-| `ScrollContainer` | `direction` | Scrollable area (vertical or horizontal) |
-| `SafeArea` | `edges` | Safe area insets for notch/home indicator |
-| `Pressable` | `action`, `actionParams` | Touchable wrapper that triggers actions |
-| `Spacer` | `size`, `flex` | Fixed or flexible spacing |
-| `Divider` | `color`, `thickness` | Thin line separator |
+<table>
+<thead>
+<tr><th>Component</th><th>Props</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>Container</code></td><td><code>padding</code>, <code>background</code>, <code>borderRadius</code>, <code>borderColor</code>, <code>flex</code></td><td>Basic wrapper with styling</td></tr>
+<tr><td><code>Row</code></td><td><code>gap</code>, <code>align</code>, <code>justify</code>, <code>flex</code>, <code>wrap</code></td><td>Horizontal flex layout</td></tr>
+<tr><td><code>Column</code></td><td><code>gap</code>, <code>align</code>, <code>justify</code>, <code>flex</code></td><td>Vertical flex layout</td></tr>
+<tr><td><code>ScrollContainer</code></td><td><code>direction</code></td><td>Scrollable area (vertical or horizontal)</td></tr>
+<tr><td><code>SafeArea</code></td><td><code>edges</code></td><td>Safe area insets for notch/home indicator</td></tr>
+<tr><td><code>Pressable</code></td><td><code>action</code>, <code>actionParams</code></td><td>Touchable wrapper that triggers actions</td></tr>
+<tr><td><code>Spacer</code></td><td><code>size</code>, <code>flex</code></td><td>Fixed or flexible spacing</td></tr>
+<tr><td><code>Divider</code></td><td><code>color</code>, <code>thickness</code></td><td>Thin line separator</td></tr>
+</tbody>
+</table>
 
 ### Content
 
-| Component | Props | Description |
-|-----------|-------|-------------|
-| `Heading` | `text`, `level`, `align`, `color` | Heading text (levels 1-6) |
-| `Paragraph` | `text`, `align`, `color` | Body text |
-| `Label` | `text`, `color`, `bold` | Small label text |
-| `Image` | `uri`, `width`, `height`, `resizeMode`, `borderRadius` | Image display |
-| `Avatar` | `uri`, `size`, `fallback` | Circular avatar |
-| `Badge` | `label`, `color`, `textColor` | Status badge |
-| `Chip` | `label`, `selected`, `color` | Tag/chip |
+<table>
+<thead>
+<tr><th>Component</th><th>Props</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>Heading</code></td><td><code>text</code>, <code>level</code>, <code>align</code>, <code>color</code></td><td>Heading text (levels 1-6)</td></tr>
+<tr><td><code>Paragraph</code></td><td><code>text</code>, <code>align</code>, <code>color</code></td><td>Body text</td></tr>
+<tr><td><code>Label</code></td><td><code>text</code>, <code>color</code>, <code>bold</code></td><td>Small label text</td></tr>
+<tr><td><code>Image</code></td><td><code>uri</code>, <code>width</code>, <code>height</code>, <code>resizeMode</code>, <code>borderRadius</code></td><td>Image display</td></tr>
+<tr><td><code>Avatar</code></td><td><code>uri</code>, <code>size</code>, <code>fallback</code></td><td>Circular avatar</td></tr>
+<tr><td><code>Badge</code></td><td><code>label</code>, <code>color</code>, <code>textColor</code></td><td>Status badge</td></tr>
+<tr><td><code>Chip</code></td><td><code>label</code>, <code>selected</code>, <code>color</code></td><td>Tag/chip</td></tr>
+</tbody>
+</table>
 
 ### Input
 
-| Component | Props | Description |
-|-----------|-------|-------------|
-| `Button` | `label`, `variant`, `size`, `disabled`, `action`, `actionParams` | Pressable button |
-| `TextInput` | `placeholder`, `value` (use `$bindState`), `secure`, `keyboardType`, `multiline` | Text input field |
-| `Switch` | `checked` (use `$bindState`), `label` | Toggle switch |
-| `Checkbox` | `checked` (use `$bindState`), `label` | Checkbox with label |
-| `Slider` | `value` (use `$bindState`), `min`, `max`, `step` | Range slider |
-| `SearchBar` | `placeholder`, `value` (use `$bindState`) | Search input |
+<table>
+<thead>
+<tr><th>Component</th><th>Props</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>Button</code></td><td><code>label</code>, <code>variant</code>, <code>size</code>, <code>disabled</code>, <code>action</code>, <code>actionParams</code></td><td>Pressable button</td></tr>
+<tr><td><code>TextInput</code></td><td><code>placeholder</code>, <code>value</code> (use <code>$bindState</code>), <code>secure</code>, <code>keyboardType</code>, <code>multiline</code></td><td>Text input field</td></tr>
+<tr><td><code>Switch</code></td><td><code>checked</code> (use <code>$bindState</code>), <code>label</code></td><td>Toggle switch</td></tr>
+<tr><td><code>Checkbox</code></td><td><code>checked</code> (use <code>$bindState</code>), <code>label</code></td><td>Checkbox with label</td></tr>
+<tr><td><code>Slider</code></td><td><code>value</code> (use <code>$bindState</code>), <code>min</code>, <code>max</code>, <code>step</code></td><td>Range slider</td></tr>
+<tr><td><code>SearchBar</code></td><td><code>placeholder</code>, <code>value</code> (use <code>$bindState</code>)</td><td>Search input</td></tr>
+</tbody>
+</table>
 
 ### Feedback
 
-| Component | Props | Description |
-|-----------|-------|-------------|
-| `Spinner` | `size`, `color` | Loading indicator |
-| `ProgressBar` | `progress`, `color`, `trackColor` | Progress indicator |
+<table>
+<thead>
+<tr><th>Component</th><th>Props</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>Spinner</code></td><td><code>size</code>, <code>color</code></td><td>Loading indicator</td></tr>
+<tr><td><code>ProgressBar</code></td><td><code>progress</code>, <code>color</code>, <code>trackColor</code></td><td>Progress indicator</td></tr>
+</tbody>
+</table>
 
 ### Composite
 
-| Component | Props | Description |
-|-----------|-------|-------------|
-| `Card` | `title`, `subtitle`, `padding` | Card container |
-| `ListItem` | `title`, `subtitle`, `leading`, `trailing`, `action`, `actionParams` | List row |
-| `Modal` | `visible`, `title` | Bottom sheet modal |
+<table>
+<thead>
+<tr><th>Component</th><th>Props</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>Card</code></td><td><code>title</code>, <code>subtitle</code>, <code>padding</code></td><td>Card container</td></tr>
+<tr><td><code>ListItem</code></td><td><code>title</code>, <code>subtitle</code>, <code>leading</code>, <code>trailing</code>, <code>action</code>, <code>actionParams</code></td><td>List row</td></tr>
+<tr><td><code>Modal</code></td><td><code>visible</code>, <code>title</code></td><td>Bottom sheet modal</td></tr>
+</tbody>
+</table>
 
 ## Providers
 
@@ -68,11 +93,16 @@ React Native renderer with standard components, providers, and hooks.
 </StateProvider>
 ```
 
-| Prop | Type | Description |
-|------|------|-------------|
-| `store` | `StateStore` | External store (controlled mode). When provided, `initialState` and `onStateChange` are ignored. |
-| `initialState` | `Record<string, unknown>` | Initial state model (uncontrolled mode). |
-| `onStateChange` | `(changes: Array<{ path: string; value: unknown }>) => void` | Callback when state changes (uncontrolled mode). Called once per `set` or `update` with all changed entries. |
+<table>
+<thead>
+<tr><th>Prop</th><th>Type</th><th>Description</th></tr>
+</thead>
+<tbody>
+<tr><td><code>store</code></td><td><code>StateStore</code></td><td>External store (controlled mode). When provided, <code>initialState</code> and <code>onStateChange</code> are ignored.</td></tr>
+<tr><td><code>initialState</code></td><td><code>Record&lt;string, unknown&gt;</code></td><td>Initial state model (uncontrolled mode).</td></tr>
+<tr><td><code>onStateChange</code></td><td><code>{'(changes: Array<{ path: string; value: unknown }>) => void'}</code></td><td>Callback when state changes (uncontrolled mode). Called once per <code>set</code> or <code>update</code> with all changed entries.</td></tr>
+</tbody>
+</table>
 
 #### External Store (Controlled Mode)
 
@@ -190,8 +220,13 @@ import { standardComponentDefinitions, standardActionDefinitions } from "@json-r
 import { schema } from "@json-render/react-native/schema";
 ```
 
-| Export | Purpose |
-|--------|---------|
-| `standardComponentDefinitions` | Catalog definitions for all 25+ standard components |
-| `standardActionDefinitions` | Catalog definitions for standard actions (setState, navigate) |
-| `schema` | React Native element tree schema |
+<table>
+<thead>
+<tr><th>Export</th><th>Purpose</th></tr>
+</thead>
+<tbody>
+<tr><td><code>standardComponentDefinitions</code></td><td>Catalog definitions for all 25+ standard components</td></tr>
+<tr><td><code>standardActionDefinitions</code></td><td>Catalog definitions for standard actions (setState, navigate)</td></tr>
+<tr><td><code>schema</code></td><td>React Native element tree schema</td></tr>
+</tbody>
+</table>

apps/web/app/(main)/docs/api/react-three-fiber/page.mdx

@@ -0,0 +1,421 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/react-three-fiber")
+
+# @json-render/react-three-fiber
+
+React Three Fiber renderer for json-render. 20 built-in 3D components for meshes, lights, models, gaussian splats, environments, text, cameras, and controls.
+
+## Installation
+
+```bash
+npm install @json-render/react-three-fiber @json-render/core @json-render/react @react-three/fiber @react-three/drei three zod
+```
+
+## Entry Points
+
+<table>
+<thead>
+<tr>
+<th>Entry Point</th>
+<th>Exports</th>
+<th>Use For</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>@json-render/react-three-fiber</code></td>
+<td><code>threeComponents</code>, <code>ThreeRenderer</code>, <code>ThreeCanvas</code>, schemas</td>
+<td>React Three Fiber implementations and renderer</td>
+</tr>
+<tr>
+<td><code>@json-render/react-three-fiber/catalog</code></td>
+<td><code>threeComponentDefinitions</code></td>
+<td>Catalog schemas (no R3F dependency, safe for server)</td>
+</tr>
+</tbody>
+</table>
+
+## Usage
+
+```tsx
+import {'{ defineCatalog }'} from "@json-render/core";
+import {'{ schema, defineRegistry }'} from "@json-render/react";
+import {'{'}
+  threeComponentDefinitions,
+  threeComponents,
+  ThreeCanvas,
+{'}'} from "@json-render/react-three-fiber";
+
+const catalog = defineCatalog(schema, {'{'}
+  components: {'{'}
+    Box: threeComponentDefinitions.Box,
+    Sphere: threeComponentDefinitions.Sphere,
+    AmbientLight: threeComponentDefinitions.AmbientLight,
+    DirectionalLight: threeComponentDefinitions.DirectionalLight,
+    OrbitControls: threeComponentDefinitions.OrbitControls,
+  {'}'},
+  actions: {'{}'},
+{'}'});
+
+const {'{ registry }'} = defineRegistry(catalog, {'{'}
+  components: {'{'}
+    Box: threeComponents.Box,
+    Sphere: threeComponents.Sphere,
+    AmbientLight: threeComponents.AmbientLight,
+    DirectionalLight: threeComponents.DirectionalLight,
+    OrbitControls: threeComponents.OrbitControls,
+  {'}'},
+{'}'});
+```
+
+### ThreeCanvas (convenience)
+
+```tsx
+<ThreeCanvas
+  spec={'{spec}'}
+  registry={'{registry}'}
+  shadows
+  camera={'{'}{'{ position: [5, 5, 5], fov: 50 }'}{'}'} 
+  style={'{'}{'{ width: "100%", height: "100vh" }'}{'}'} 
+/>
+```
+
+### Manual Canvas Setup
+
+```tsx
+import {'{ Canvas }'} from "@react-three/fiber";
+import {'{ ThreeRenderer }'} from "@json-render/react-three-fiber";
+
+<Canvas shadows>
+  <ThreeRenderer spec={'{spec}'} registry={'{registry}'} />
+</Canvas>
+```
+
+## Components
+
+### Primitives
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+<th>Key Props</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Box</code></td>
+<td>Box mesh (default 1x1x1)</td>
+<td><code>width</code>, <code>height</code>, <code>depth</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Sphere</code></td>
+<td>Sphere mesh</td>
+<td><code>radius</code>, <code>widthSegments</code>, <code>heightSegments</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Cylinder</code></td>
+<td>Cylinder mesh</td>
+<td><code>radiusTop</code>, <code>radiusBottom</code>, <code>height</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Cone</code></td>
+<td>Cone mesh</td>
+<td><code>radius</code>, <code>height</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Torus</code></td>
+<td>Torus (donut) mesh</td>
+<td><code>radius</code>, <code>tube</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Plane</code></td>
+<td>Flat plane mesh</td>
+<td><code>width</code>, <code>height</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Capsule</code></td>
+<td>Capsule mesh</td>
+<td><code>radius</code>, <code>length</code>, <code>material</code></td>
+</tr>
+</tbody>
+</table>
+
+All primitives share: <code>position</code>, <code>rotation</code>, <code>scale</code>, <code>castShadow</code>, <code>receiveShadow</code>, <code>material</code>.
+
+### Material Schema
+
+<table>
+<thead>
+<tr>
+<th>Property</th>
+<th>Type</th>
+<th>Default</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>color</code></td>
+<td><code>string</code></td>
+<td><code>"#ffffff"</code></td>
+</tr>
+<tr>
+<td><code>metalness</code></td>
+<td><code>number</code></td>
+<td><code>0</code></td>
+</tr>
+<tr>
+<td><code>roughness</code></td>
+<td><code>number</code></td>
+<td><code>1</code></td>
+</tr>
+<tr>
+<td><code>emissive</code></td>
+<td><code>string</code></td>
+<td><code>"#000000"</code></td>
+</tr>
+<tr>
+<td><code>emissiveIntensity</code></td>
+<td><code>number</code></td>
+<td><code>1</code></td>
+</tr>
+<tr>
+<td><code>opacity</code></td>
+<td><code>number</code></td>
+<td><code>1</code></td>
+</tr>
+<tr>
+<td><code>transparent</code></td>
+<td><code>boolean</code></td>
+<td><code>false</code></td>
+</tr>
+<tr>
+<td><code>wireframe</code></td>
+<td><code>boolean</code></td>
+<td><code>false</code></td>
+</tr>
+</tbody>
+</table>
+
+### Lights
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+<th>Key Props</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>AmbientLight</code></td>
+<td>Uniform illumination</td>
+<td><code>color</code>, <code>intensity</code></td>
+</tr>
+<tr>
+<td><code>DirectionalLight</code></td>
+<td>Sunlight-style</td>
+<td><code>position</code>, <code>color</code>, <code>intensity</code>, <code>castShadow</code></td>
+</tr>
+<tr>
+<td><code>PointLight</code></td>
+<td>Radiates from a point</td>
+<td><code>position</code>, <code>color</code>, <code>intensity</code>, <code>distance</code>, <code>decay</code></td>
+</tr>
+<tr>
+<td><code>SpotLight</code></td>
+<td>Cone of light</td>
+<td><code>position</code>, <code>color</code>, <code>intensity</code>, <code>angle</code>, <code>penumbra</code></td>
+</tr>
+</tbody>
+</table>
+
+### Other Components
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+<th>Key Props</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Group</code></td>
+<td>Container for children</td>
+<td><code>position</code>, <code>rotation</code>, <code>scale</code></td>
+</tr>
+<tr>
+<td><code>Model</code></td>
+<td>GLTF/GLB model loader</td>
+<td><code>url</code>, <code>position</code>, <code>rotation</code>, <code>scale</code></td>
+</tr>
+<tr>
+<td><code>Environment</code></td>
+<td>HDRI environment map</td>
+<td><code>preset</code>, <code>background</code>, <code>blur</code>, <code>intensity</code></td>
+</tr>
+<tr>
+<td><code>Fog</code></td>
+<td>Linear fog effect</td>
+<td><code>color</code>, <code>near</code>, <code>far</code></td>
+</tr>
+<tr>
+<td><code>GridHelper</code></td>
+<td>Reference grid</td>
+<td><code>size</code>, <code>divisions</code>, <code>color</code></td>
+</tr>
+<tr>
+<td><code>Text3D</code></td>
+<td>3D text (SDF)</td>
+<td><code>text</code>, <code>fontSize</code>, <code>color</code>, <code>anchorX</code>, <code>anchorY</code></td>
+</tr>
+<tr>
+<td><code>PerspectiveCamera</code></td>
+<td>Camera</td>
+<td><code>position</code>, <code>fov</code>, <code>near</code>, <code>far</code>, <code>makeDefault</code></td>
+</tr>
+<tr>
+<td><code>OrbitControls</code></td>
+<td>Camera controls</td>
+<td><code>enableDamping</code>, <code>enableZoom</code>, <code>autoRotate</code></td>
+</tr>
+<tr>
+<td><code>GaussianSplat</code></td>
+<td>Gaussian splat (.splat/.ply) loader</td>
+<td><code>src</code>, <code>position</code>, <code>rotation</code>, <code>scale</code>, <code>alphaHash</code>, <code>toneMapped</code></td>
+</tr>
+</tbody>
+</table>
+
+## Shared Schemas
+
+Reusable Zod schemas for custom 3D components:
+
+```tsx
+import {'{ vector3Schema, materialSchema, transformProps, shadowProps }'} from "@json-render/react-three-fiber";
+```
+
+<table>
+<thead>
+<tr>
+<th>Export</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>vector3Schema</code></td>
+<td><code>z.tuple([z.number(), z.number(), z.number()])</code></td>
+</tr>
+<tr>
+<td><code>materialSchema</code></td>
+<td>Standard material props (color, metalness, roughness, etc.)</td>
+</tr>
+<tr>
+<td><code>transformProps</code></td>
+<td><code>{'{ position, rotation, scale }'}</code> schema fields</td>
+</tr>
+<tr>
+<td><code>shadowProps</code></td>
+<td><code>{'{ castShadow, receiveShadow }'}</code> schema fields</td>
+</tr>
+</tbody>
+</table>
+
+## ThreeRenderer
+
+<table>
+<thead>
+<tr>
+<th>Prop</th>
+<th>Type</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>spec</code></td>
+<td><code>Spec | null</code></td>
+<td>The spec to render as a 3D scene</td>
+</tr>
+<tr>
+<td><code>registry</code></td>
+<td><code>ComponentRegistry</code></td>
+<td>Component registry from <code>defineRegistry</code></td>
+</tr>
+<tr>
+<td><code>store</code></td>
+<td><code>StateStore</code></td>
+<td>External state store (controlled mode)</td>
+</tr>
+<tr>
+<td><code>initialState</code></td>
+<td><code>Record&lt;string, unknown&gt;</code></td>
+<td>Initial state (uncontrolled mode)</td>
+</tr>
+<tr>
+<td><code>handlers</code></td>
+<td><code>Record&lt;string, Function&gt;</code></td>
+<td>Action handlers</td>
+</tr>
+<tr>
+<td><code>loading</code></td>
+<td><code>boolean</code></td>
+<td>Whether the spec is streaming</td>
+</tr>
+<tr>
+<td><code>children</code></td>
+<td><code>ReactNode</code></td>
+<td>Additional R3F elements alongside the spec</td>
+</tr>
+</tbody>
+</table>
+
+## ThreeCanvas
+
+Extends <code>ThreeRendererProps</code> with Canvas options:
+
+<table>
+<thead>
+<tr>
+<th>Prop</th>
+<th>Type</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>shadows</code></td>
+<td><code>boolean</code></td>
+<td>Enable shadow maps</td>
+</tr>
+<tr>
+<td><code>camera</code></td>
+<td><code>object</code></td>
+<td>Default camera config (position, fov, etc.)</td>
+</tr>
+<tr>
+<td><code>className</code></td>
+<td><code>string</code></td>
+<td>CSS class for the canvas container</td>
+</tr>
+<tr>
+<td><code>style</code></td>
+<td><code>CSSProperties</code></td>
+<td>Inline styles for the canvas container</td>
+</tr>
+</tbody>
+</table>
+
+## Type Helpers
+
+```tsx
+import type {'{ ThreeProps }'} from "@json-render/react-three-fiber";
+
+type BoxProps = ThreeProps<"Box">;
+type SphereProps = ThreeProps<"Sphere">;
+```

apps/web/app/(main)/docs/api/react/page.mdx

@@ -15,11 +15,32 @@ React components, providers, and hooks.
 </StateProvider>
 ```
 
-| Prop | Type | Description |
-|------|------|-------------|
-| `store` | `StateStore` | External store (controlled mode). When provided, `initialState` and `onStateChange` are ignored. |
-| `initialState` | `Record<string, unknown>` | Initial state model (uncontrolled mode). |
-| `onStateChange` | `(changes: Array<{ path: string; value: unknown }>) => void` | Callback when state changes (uncontrolled mode). Called once per `set` or `update` with all changed entries. |
+<table>
+  <thead>
+    <tr>
+      <th>Prop</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>store</code></td>
+      <td><code>StateStore</code></td>
+      <td>External store (controlled mode). When provided, <code>initialState</code> and <code>onStateChange</code> are ignored.</td>
+    </tr>
+    <tr>
+      <td><code>initialState</code></td>
+      <td><code>Record&lt;string, unknown&gt;</code></td>
+      <td>Initial state model (uncontrolled mode).</td>
+    </tr>
+    <tr>
+      <td><code>onStateChange</code></td>
+      <td><code>{'(changes: Array<{ path: string; value: unknown }>) => void'}</code></td>
+      <td>Callback when state changes (uncontrolled mode). Called once per <code>set</code> or <code>update</code> with all changed entries.</td>
+    </tr>
+  </tbody>
+</table>
 
 #### External Store (Controlled Mode)
 
@@ -109,6 +130,40 @@ const { registry } = defineRegistry(catalog, {
 type Registry = Record<string, React.ComponentType<ComponentRenderProps>>;
 ```
 
+### JSONUIProvider
+
+Convenience wrapper that combines `StateProvider`, `VisibilityProvider`, `ValidationProvider`, and `ActionProvider`. Accepts all their props plus:
+
+<table>
+  <thead>
+    <tr>
+      <th>Prop</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>functions</code></td>
+      <td><code>Record&lt;string, ComputedFunction&gt;</code></td>
+      <td>Named functions for <code>$computed</code> expressions in props</td>
+    </tr>
+  </tbody>
+</table>
+
+```tsx
+<JSONUIProvider
+  spec={spec}
+  catalog={catalog}
+  handlers={{ submit: async () => { /* ... */ } }}
+  functions={{ fullName: (args) => `${args.first} ${args.last}` }}
+>
+  <Renderer spec={spec} registry={registry} />
+</JSONUIProvider>
+```
+
+The `functions` prop is also available on `createRenderer`.
+
 ### Component Props (via defineRegistry)
 
 ```tsx
@@ -237,6 +292,15 @@ const {
 
 `ValidationConfig` is `{ checks?: ValidationCheck[], validateOn?: 'change' | 'blur' | 'submit' }`.
 
+### useOptionalValidation
+
+Non-throwing variant of `useValidation()`. Returns `null` when no `ValidationProvider` is present, instead of throwing. Useful in components that may or may not be rendered inside a validation context.
+
+```typescript
+const validation = useOptionalValidation();
+// ValidationContextValue | null
+```
+
 ### useBoundProp
 
 Two-way binding helper for `$bindState` / `$bindItem` expressions. Returns `[value, setValue]` where `setValue` writes back to the bound state path.

apps/web/app/(main)/docs/api/redux/page.mdx

@@ -0,0 +1,104 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/redux")
+
+# @json-render/redux
+
+Redux / Redux Toolkit adapter for json-render's `StateStore` interface.
+
+## Installation
+
+```bash
+npm install @json-render/redux @json-render/core @json-render/react redux
+# or with Redux Toolkit (recommended):
+npm install @json-render/redux @json-render/core @json-render/react @reduxjs/toolkit
+```
+
+## reduxStateStore
+
+Create a `StateStore` backed by a Redux store.
+
+```typescript
+import { reduxStateStore } from "@json-render/redux";
+```
+
+### Options
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Type</th>
+      <th>Required</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>store</code></td>
+      <td><code>Store</code></td>
+      <td>Yes</td>
+      <td>The Redux store instance.</td>
+    </tr>
+    <tr>
+      <td><code>selector</code></td>
+      <td><code>{'(state: S) => StateModel'}</code></td>
+      <td>No</td>
+      <td>Select the json-render slice from the Redux state tree. Defaults to <code>{'(state) => state'}</code>.</td>
+    </tr>
+    <tr>
+      <td><code>dispatch</code></td>
+      <td><code>{'(nextState: StateModel, store: Store) => void'}</code></td>
+      <td>Yes</td>
+      <td>Dispatch an action that replaces the selected slice with the next state.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Example
+
+```typescript
+import { configureStore, createSlice } from "@reduxjs/toolkit";
+import { reduxStateStore } from "@json-render/redux";
+import { StateProvider } from "@json-render/react";
+
+const uiSlice = createSlice({
+  name: "ui",
+  initialState: { count: 0 } as Record<string, unknown>,
+  reducers: {
+    replaceUiState: (_state, action) => action.payload,
+  },
+});
+
+const reduxStore = configureStore({
+  reducer: { ui: uiSlice.reducer },
+});
+
+const store = reduxStateStore({
+  store: reduxStore,
+  selector: (state) => state.ui,
+  dispatch: (next, s) => s.dispatch(uiSlice.actions.replaceUiState(next)),
+});
+```
+
+```tsx
+<StateProvider store={store}>
+  {/* json-render reads/writes go through Redux */}
+</StateProvider>
+```
+
+## Re-exports
+
+<table>
+  <thead>
+    <tr>
+      <th>Export</th>
+      <th>Source</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>StateStore</code></td>
+      <td><code>@json-render/core</code></td>
+    </tr>
+  </tbody>
+</table>

apps/web/app/(main)/docs/api/shadcn-svelte/page.mdx

@@ -0,0 +1,320 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/shadcn-svelte")
+
+# @json-render/shadcn-svelte
+
+Pre-built [shadcn-svelte](https://www.shadcn-svelte.com/) components for json-render. 36 components built on Svelte 5 + Tailwind CSS, ready to use with `defineCatalog` and `defineRegistry`.
+
+## Installation
+
+```bash
+npm install @json-render/shadcn-svelte @json-render/core @json-render/svelte zod
+```
+
+Your app must have Tailwind CSS configured.
+
+## Entry Points
+
+<table>
+<thead>
+<tr>
+<th>Entry Point</th>
+<th>Exports</th>
+<th>Use For</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>@json-render/shadcn-svelte</code></td>
+<td><code>shadcnComponents</code>, <code>shadcnComponentDefinitions</code></td>
+<td>Svelte implementations + catalog schemas</td>
+</tr>
+<tr>
+<td><code>@json-render/shadcn-svelte/catalog</code></td>
+<td><code>shadcnComponentDefinitions</code></td>
+<td>Catalog schemas only (no Svelte dependency, safe for server)</td>
+</tr>
+</tbody>
+</table>
+
+## Usage
+
+Pick the components you need from the standard definitions:
+
+```typescript
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/svelte/schema";
+import { shadcnComponentDefinitions } from "@json-render/shadcn-svelte/catalog";
+import { defineRegistry } from "@json-render/svelte";
+import { shadcnComponents } from "@json-render/shadcn-svelte";
+
+// Catalog: pick definitions
+const catalog = defineCatalog(schema, {
+  components: {
+    Card: shadcnComponentDefinitions.Card,
+    Stack: shadcnComponentDefinitions.Stack,
+    Heading: shadcnComponentDefinitions.Heading,
+    Button: shadcnComponentDefinitions.Button,
+    Input: shadcnComponentDefinitions.Input,
+  },
+  actions: {},
+});
+
+// Registry: pick matching implementations
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: shadcnComponents.Card,
+    Stack: shadcnComponents.Stack,
+    Heading: shadcnComponents.Heading,
+    Button: shadcnComponents.Button,
+    Input: shadcnComponents.Input,
+  },
+});
+```
+
+Then render in your Svelte component:
+
+```svelte
+<script lang="ts">
+  import { Renderer, JsonUIProvider } from "@json-render/svelte";
+
+  export let spec;
+  export let registry;
+</script>
+
+<JsonUIProvider initialState={spec?.state ?? {}}>
+  <Renderer {spec} {registry} />
+</JsonUIProvider>
+```
+
+## Available Components
+
+### Layout
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Card</code></td>
+<td>Container card with optional title, description, maxWidth, centered</td>
+</tr>
+<tr>
+<td><code>Stack</code></td>
+<td>Flex container with direction, gap, align, justify</td>
+</tr>
+<tr>
+<td><code>Grid</code></td>
+<td>Grid layout with columns (1-6) and gap</td>
+</tr>
+<tr>
+<td><code>Separator</code></td>
+<td>Visual separator line with orientation</td>
+</tr>
+</tbody>
+</table>
+
+### Navigation
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Tabs</code></td>
+<td>Tabbed navigation with tabs array, defaultValue, value</td>
+</tr>
+<tr>
+<td><code>Accordion</code></td>
+<td>Collapsible sections with items array and type (single/multiple)</td>
+</tr>
+<tr>
+<td><code>Collapsible</code></td>
+<td>Single collapsible section with title and defaultOpen</td>
+</tr>
+<tr>
+<td><code>Pagination</code></td>
+<td>Page navigation with totalPages and page</td>
+</tr>
+</tbody>
+</table>
+
+### Overlay
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Dialog</code></td>
+<td>Modal dialog with title, description, openPath</td>
+</tr>
+<tr>
+<td><code>Drawer</code></td>
+<td>Bottom drawer with title, description, openPath</td>
+</tr>
+<tr>
+<td><code>Tooltip</code></td>
+<td>Hover tooltip with content and text</td>
+</tr>
+<tr>
+<td><code>Popover</code></td>
+<td>Click-triggered popover with trigger and content</td>
+</tr>
+<tr>
+<td><code>DropdownMenu</code></td>
+<td>Dropdown menu with label and items array</td>
+</tr>
+</tbody>
+</table>
+
+### Content
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Heading</code></td>
+<td>Heading text with level (h1-h4)</td>
+</tr>
+<tr>
+<td><code>Text</code></td>
+<td>Paragraph with variant (body, caption, muted, lead, code)</td>
+</tr>
+<tr>
+<td><code>Image</code></td>
+<td>Image with alt, width, height</td>
+</tr>
+<tr>
+<td><code>Avatar</code></td>
+<td>User avatar with src, name, size</td>
+</tr>
+<tr>
+<td><code>Badge</code></td>
+<td>Status badge with text and variant</td>
+</tr>
+<tr>
+<td><code>Alert</code></td>
+<td>Alert banner with title, message, type</td>
+</tr>
+<tr>
+<td><code>Carousel</code></td>
+<td>Horizontally scrollable carousel with items</td>
+</tr>
+<tr>
+<td><code>Table</code></td>
+<td>Data table with columns and rows</td>
+</tr>
+</tbody>
+</table>
+
+### Feedback
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Progress</code></td>
+<td>Progress bar with value, max, label</td>
+</tr>
+<tr>
+<td><code>Skeleton</code></td>
+<td>Loading placeholder with width, height, rounded</td>
+</tr>
+<tr>
+<td><code>Spinner</code></td>
+<td>Loading spinner with size and label</td>
+</tr>
+</tbody>
+</table>
+
+### Input
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Button</code></td>
+<td>Clickable button with label, variant, disabled</td>
+</tr>
+<tr>
+<td><code>Link</code></td>
+<td>Anchor link with label and href</td>
+</tr>
+<tr>
+<td><code>Input</code></td>
+<td>Text input with label, name, type, placeholder, value, checks</td>
+</tr>
+<tr>
+<td><code>Textarea</code></td>
+<td>Multi-line text input with label, name, placeholder, rows, value, checks</td>
+</tr>
+<tr>
+<td><code>Select</code></td>
+<td>Dropdown select with label, name, options, value, checks</td>
+</tr>
+<tr>
+<td><code>Checkbox</code></td>
+<td>Checkbox with label, name, checked</td>
+</tr>
+<tr>
+<td><code>Radio</code></td>
+<td>Radio button group with label, name, options, value</td>
+</tr>
+<tr>
+<td><code>Switch</code></td>
+<td>Toggle switch with label, name, checked</td>
+</tr>
+<tr>
+<td><code>Slider</code></td>
+<td>Range slider with label, min, max, step, value</td>
+</tr>
+<tr>
+<td><code>Toggle</code></td>
+<td>Toggle button with label, pressed, variant</td>
+</tr>
+<tr>
+<td><code>ToggleGroup</code></td>
+<td>Group of toggle buttons with items, type, value</td>
+</tr>
+<tr>
+<td><code>ButtonGroup</code></td>
+<td>Group of buttons with buttons array and selected</td>
+</tr>
+</tbody>
+</table>
+
+## Notes
+
+- The `/catalog` entry point has no Svelte dependency -- use it for server-side prompt generation
+- Components use Tailwind CSS classes -- your app must have Tailwind configured
+- Component implementations use bundled shadcn-svelte primitives (not your app's `$lib/components/ui/`)
+- Form inputs support `checks` for validation (type + message pairs) and `validateOn` for timing
+- Events: inputs emit `change`/`submit`/`focus`/`blur`; buttons emit `press`; selects emit `change`/`select`

apps/web/app/(main)/docs/api/shadcn/page.mdx

@@ -15,10 +15,27 @@ Your app must have Tailwind CSS configured.
 
 ## Entry Points
 
-| Entry Point | Exports | Use For |
-|-------------|---------|---------|
-| `@json-render/shadcn` | `shadcnComponents` | React implementations |
-| `@json-render/shadcn/catalog` | `shadcnComponentDefinitions` | Catalog schemas (no React dependency, safe for server) |
+<table>
+<thead>
+<tr>
+<th>Entry Point</th>
+<th>Exports</th>
+<th>Use For</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>@json-render/shadcn</code></td>
+<td><code>shadcnComponents</code></td>
+<td>React implementations</td>
+</tr>
+<tr>
+<td><code>@json-render/shadcn/catalog</code></td>
+<td><code>shadcnComponentDefinitions</code></td>
+<td>Catalog schemas (no React dependency, safe for server)</td>
+</tr>
+</tbody>
+</table>
 
 ## Usage
 
@@ -103,69 +120,225 @@ const { registry } = defineRegistry(catalog, {
 
 ### Layout
 
-| Component | Description |
-|-----------|-------------|
-| `Card` | Container card with optional title, description, maxWidth, centered |
-| `Stack` | Flex container with direction, gap, align, justify |
-| `Grid` | Grid layout with columns (1-6) and gap |
-| `Separator` | Visual separator line with orientation |
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Card</code></td>
+<td>Container card with optional title, description, maxWidth, centered</td>
+</tr>
+<tr>
+<td><code>Stack</code></td>
+<td>Flex container with direction, gap, align, justify</td>
+</tr>
+<tr>
+<td><code>Grid</code></td>
+<td>Grid layout with columns (1-6) and gap</td>
+</tr>
+<tr>
+<td><code>Separator</code></td>
+<td>Visual separator line with orientation</td>
+</tr>
+</tbody>
+</table>
 
 ### Navigation
 
-| Component | Description |
-|-----------|-------------|
-| `Tabs` | Tabbed navigation with tabs array, defaultValue, value |
-| `Accordion` | Collapsible sections with items array and type (single/multiple) |
-| `Collapsible` | Single collapsible section with title and defaultOpen |
-| `Pagination` | Page navigation with totalPages and page |
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Tabs</code></td>
+<td>Tabbed navigation with tabs array, defaultValue, value</td>
+</tr>
+<tr>
+<td><code>Accordion</code></td>
+<td>Collapsible sections with items array and type (single/multiple)</td>
+</tr>
+<tr>
+<td><code>Collapsible</code></td>
+<td>Single collapsible section with title and defaultOpen</td>
+</tr>
+<tr>
+<td><code>Pagination</code></td>
+<td>Page navigation with totalPages and page</td>
+</tr>
+</tbody>
+</table>
 
 ### Overlay
 
-| Component | Description |
-|-----------|-------------|
-| `Dialog` | Modal dialog with title, description, openPath |
-| `Drawer` | Bottom drawer with title, description, openPath |
-| `Tooltip` | Hover tooltip with content and text |
-| `Popover` | Click-triggered popover with trigger and content |
-| `DropdownMenu` | Dropdown menu with label and items array |
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Dialog</code></td>
+<td>Modal dialog with title, description, openPath</td>
+</tr>
+<tr>
+<td><code>Drawer</code></td>
+<td>Bottom drawer with title, description, openPath</td>
+</tr>
+<tr>
+<td><code>Tooltip</code></td>
+<td>Hover tooltip with content and text</td>
+</tr>
+<tr>
+<td><code>Popover</code></td>
+<td>Click-triggered popover with trigger and content</td>
+</tr>
+<tr>
+<td><code>DropdownMenu</code></td>
+<td>Dropdown menu with label and items array</td>
+</tr>
+</tbody>
+</table>
 
 ### Content
 
-| Component | Description |
-|-----------|-------------|
-| `Heading` | Heading text with level (h1-h4) |
-| `Text` | Paragraph with variant (body, caption, muted, lead, code) |
-| `Image` | Image with alt, width, height |
-| `Avatar` | User avatar with src, name, size |
-| `Badge` | Status badge with text and variant |
-| `Alert` | Alert banner with title, message, type |
-| `Carousel` | Horizontally scrollable carousel with items |
-| `Table` | Data table with columns and rows |
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Heading</code></td>
+<td>Heading text with level (h1-h4)</td>
+</tr>
+<tr>
+<td><code>Text</code></td>
+<td>Paragraph with variant (body, caption, muted, lead, code)</td>
+</tr>
+<tr>
+<td><code>Image</code></td>
+<td>Image with alt, width, height</td>
+</tr>
+<tr>
+<td><code>Avatar</code></td>
+<td>User avatar with src, name, size</td>
+</tr>
+<tr>
+<td><code>Badge</code></td>
+<td>Status badge with text and variant</td>
+</tr>
+<tr>
+<td><code>Alert</code></td>
+<td>Alert banner with title, message, type</td>
+</tr>
+<tr>
+<td><code>Carousel</code></td>
+<td>Horizontally scrollable carousel with items</td>
+</tr>
+<tr>
+<td><code>Table</code></td>
+<td>Data table with columns and rows</td>
+</tr>
+</tbody>
+</table>
 
 ### Feedback
 
-| Component | Description |
-|-----------|-------------|
-| `Progress` | Progress bar with value, max, label |
-| `Skeleton` | Loading placeholder with width, height, rounded |
-| `Spinner` | Loading spinner with size and label |
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Progress</code></td>
+<td>Progress bar with value, max, label</td>
+</tr>
+<tr>
+<td><code>Skeleton</code></td>
+<td>Loading placeholder with width, height, rounded</td>
+</tr>
+<tr>
+<td><code>Spinner</code></td>
+<td>Loading spinner with size and label</td>
+</tr>
+</tbody>
+</table>
 
 ### Input
 
-| Component | Description |
-|-----------|-------------|
-| `Button` | Clickable button with label, variant, disabled |
-| `Link` | Anchor link with label and href |
-| `Input` | Text input with label, name, type, placeholder, value, checks |
-| `Textarea` | Multi-line text input with label, name, placeholder, rows, value, checks |
-| `Select` | Dropdown select with label, name, options, value, checks |
-| `Checkbox` | Checkbox with label, name, checked |
-| `Radio` | Radio button group with label, name, options, value |
-| `Switch` | Toggle switch with label, name, checked |
-| `Slider` | Range slider with label, min, max, step, value |
-| `Toggle` | Toggle button with label, pressed, variant |
-| `ToggleGroup` | Group of toggle buttons with items, type, value |
-| `ButtonGroup` | Group of buttons with buttons array and selected |
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Button</code></td>
+<td>Clickable button with label, variant, disabled</td>
+</tr>
+<tr>
+<td><code>Link</code></td>
+<td>Anchor link with label and href</td>
+</tr>
+<tr>
+<td><code>Input</code></td>
+<td>Text input with label, name, type, placeholder, value, checks</td>
+</tr>
+<tr>
+<td><code>Textarea</code></td>
+<td>Multi-line text input with label, name, placeholder, rows, value, checks</td>
+</tr>
+<tr>
+<td><code>Select</code></td>
+<td>Dropdown select with label, name, options, value, checks</td>
+</tr>
+<tr>
+<td><code>Checkbox</code></td>
+<td>Checkbox with label, name, checked</td>
+</tr>
+<tr>
+<td><code>Radio</code></td>
+<td>Radio button group with label, name, options, value</td>
+</tr>
+<tr>
+<td><code>Switch</code></td>
+<td>Toggle switch with label, name, checked</td>
+</tr>
+<tr>
+<td><code>Slider</code></td>
+<td>Range slider with label, min, max, step, value</td>
+</tr>
+<tr>
+<td><code>Toggle</code></td>
+<td>Toggle button with label, pressed, variant</td>
+</tr>
+<tr>
+<td><code>ToggleGroup</code></td>
+<td>Group of toggle buttons with items, type, value</td>
+</tr>
+<tr>
+<td><code>ButtonGroup</code></td>
+<td>Group of buttons with buttons array and selected</td>
+</tr>
+</tbody>
+</table>
 
 ## Notes
 

apps/web/app/(main)/docs/api/solid/page.mdx

@@ -0,0 +1,201 @@
+import { pageMetadata } from "@/lib/page-metadata";
+export const metadata = pageMetadata("docs/api/solid");
+
+# @json-render/solid
+
+SolidJS components, providers, and hooks for rendering json-render specs.
+
+## Installation
+
+<PackageInstall packages="@json-render/core @json-render/solid" />
+
+Peer dependencies: `solid-js ^1.9.0` and `zod ^4.0.0`.
+
+<PackageInstall packages="solid-js zod" />
+
+## Providers
+
+### StateProvider
+
+```tsx
+<StateProvider
+  initialState={{}}
+  onStateChange={(changes) => console.log(changes)}
+>
+  {/* children */}
+</StateProvider>
+```
+
+<table>
+  <thead>
+    <tr>
+      <th>Prop</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>
+        <code>store</code>
+      </td>
+      <td>
+        <code>StateStore</code>
+      </td>
+      <td>
+        External store (controlled mode). When provided,{" "}
+        <code>initialState</code> and <code>onStateChange</code> are ignored.
+      </td>
+    </tr>
+    <tr>
+      <td>
+        <code>initialState</code>
+      </td>
+      <td>
+        <code>Record&lt;string, unknown&gt;</code>
+      </td>
+      <td>Initial state model for uncontrolled mode.</td>
+    </tr>
+    <tr>
+      <td>
+        <code>onStateChange</code>
+      </td>
+      <td>
+        <code>
+          {"(changes: Array<{ path: string; value: unknown }>) => void"}
+        </code>
+      </td>
+      <td>Called for uncontrolled state updates.</td>
+    </tr>
+  </tbody>
+</table>
+
+### ActionProvider
+
+```tsx
+<ActionProvider
+  handlers={{ submit: async (params) => {} }}
+  navigate={(path) => {}}
+>
+  {/* children */}
+</ActionProvider>
+```
+
+### VisibilityProvider
+
+```tsx
+<VisibilityProvider>{/* children */}</VisibilityProvider>
+```
+
+### ValidationProvider
+
+```tsx
+<ValidationProvider customFunctions={{ custom: (value) => Boolean(value) }}>
+  {/* children */}
+</ValidationProvider>
+```
+
+### JSONUIProvider
+
+Combined provider wrapper for state, visibility, validation, and actions.
+
+```tsx
+<JSONUIProvider
+  registry={registry}
+  initialState={{}}
+  handlers={handlers}
+  validationFunctions={validationFunctions}
+>
+  <Renderer spec={spec} registry={registry} />
+</JSONUIProvider>
+```
+
+## defineRegistry
+
+Create a typed component registry and action helpers from a catalog.
+
+```tsx
+const { registry, handlers, executeAction } = defineRegistry(catalog, {
+  components: {
+    Card: (renderProps) => <div>{renderProps.children}</div>,
+    Button: (renderProps) => (
+      <button onClick={() => renderProps.emit("press")}>
+        {renderProps.element.props.label as string}
+      </button>
+    ),
+  },
+  actions: {
+    submit: async (params, setState, state) => {
+      // custom action logic
+    },
+  },
+});
+```
+
+## Components
+
+### Renderer
+
+```tsx
+<Renderer spec={spec} registry={registry} loading={false} />
+```
+
+Renders a `Spec` tree using your registry.
+
+### createRenderer
+
+Build an app-level renderer from catalog + components:
+
+```tsx
+const AppRenderer = createRenderer(catalog, {
+  Card: (renderProps) => <div>{renderProps.children}</div>,
+});
+
+<AppRenderer spec={spec} state={{}} onAction={(name, params) => {}} />;
+```
+
+## Hooks
+
+- `useStateStore()`
+- `useStateValue(path)` - returns an accessor
+- `useStateBinding(path)` - returns `[Accessor<T | undefined>, setValue]`
+- `useVisibility()` / `useIsVisible(condition)`
+- `useActions()` / `useAction(binding)`
+- `useValidation()` / `useOptionalValidation()`
+- `useFieldValidation(path, config)` - returns accessor-backed `state`, `errors`, and `isValid`
+- `useBoundProp(value, bindingPath)`
+- `useUIStream(options)`
+- `useChatUI(options)`
+
+## Built-in Actions
+
+`ActionProvider` handles these built-in actions:
+
+- `setState`
+- `pushState`
+- `removeState`
+- `validateForm`
+
+## Component Props
+
+Registry components receive:
+
+```ts
+interface ComponentRenderProps<P = Record<string, unknown>> {
+  element: UIElement<string, P>;
+  children?: JSX.Element;
+  emit: (event: string) => void;
+  on: (event: string) => EventHandle;
+  bindings?: Record<string, string>;
+  loading?: boolean;
+}
+```
+
+Use `emit("event")` to dispatch event bindings. Use `on("event")` to access `EventHandle` metadata (`bound`, `shouldPreventDefault`, `emit`).
+
+## Reactivity Notes
+
+- Keep changing reads in JSX expressions, `createMemo`, or `createEffect`.
+- Avoid props destructuring in component signatures when you need live updates.
+- `StateProvider` and other contexts expose getter-backed values so consumers read live signals.
+- `useStateValue`, `useStateBinding`, and `useFieldValidation` expose reactive accessors; call them as functions.

apps/web/app/(main)/docs/api/svelte/page.mdx

@@ -0,0 +1,126 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/svelte")
+
+# @json-render/svelte
+
+Svelte 5 components, providers, and helpers for rendering json-render specs.
+
+## Installation
+
+<PackageInstall packages="@json-render/core @json-render/svelte" />
+
+Peer dependencies: `svelte ^5.0.0` and `zod ^4.0.0`.
+
+<PackageInstall packages="svelte zod" />
+
+## Components
+
+### Renderer
+
+```svelte
+<Renderer
+  spec={spec}       // Spec | null
+  registry={registry}
+  loading={false}
+/>
+```
+
+Renders a spec with your component registry. If `spec` is `null`, it renders nothing.
+
+### JsonUIProvider
+
+Convenience wrapper around `StateProvider`, `VisibilityProvider`, `ValidationProvider`, and `ActionProvider`.
+
+```svelte
+<JsonUIProvider
+  initialState={{}}
+  handlers={handlers}
+  validationFunctions={validationFunctions}
+>
+  <Renderer {spec} {registry} />
+</JsonUIProvider>
+```
+
+## defineRegistry
+
+Create a typed component registry and action handlers from a catalog.
+
+```typescript
+import { defineRegistry } from "@json-render/svelte";
+
+const { registry, handlers, executeAction } = defineRegistry(catalog, {
+  components: {
+    Card,
+    Button,
+  },
+  actions: {
+    submit: async (params, setState, state) => {
+      // custom action logic
+    },
+  },
+});
+```
+
+`handlers` is designed for `JsonUIProvider`/`ActionProvider`. `executeAction` is an imperative helper.
+
+## Component Props
+
+Registry components receive `BaseComponentProps<TProps>`:
+
+```typescript
+interface BaseComponentProps<TProps> {
+  props: TProps;
+  children?: Snippet;
+  emit: (event: string) => void;
+  bindings?: Record<string, string>;
+  loading?: boolean;
+}
+```
+
+Use `emit("eventName")` to trigger handlers declared in the spec `on` bindings.
+
+## Context Helpers
+
+Use these helpers inside Svelte components:
+
+- `getStateValue(path)` - read/write state via `.current`
+- `getBoundProp(() => value, () => bindingPath)` - write back resolved `$bindState` / `$bindItem` values
+- `isVisible(condition)` - evaluate visibility via `.current`
+- `getAction(name)` - read a registered action handler via `.current`
+- `getFieldValidation(ctx, path, config)` - get field validation state + actions
+
+For advanced usage, access full contexts:
+
+- `getStateContext()`
+- `getActionContext()`
+- `getVisibilityContext()`
+- `getValidationContext()`
+- `getOptionalValidationContext()`
+
+## Streaming
+
+### createUIStream
+
+```typescript
+const stream = createUIStream({
+  api: "/api/generate-ui",
+  onComplete: (spec) => console.log(spec),
+});
+
+await stream.send("Create a login form");
+
+console.log(stream.spec);
+console.log(stream.isStreaming);
+```
+
+### createChatUI
+
+```typescript
+const chat = createChatUI({ api: "/api/chat-ui" });
+await chat.send("Build a settings panel");
+console.log(chat.messages, chat.isStreaming);
+```
+
+## Schema Export
+
+Use `schema` from `@json-render/svelte` when defining catalogs for Svelte specs.

apps/web/app/(main)/docs/api/vue/page.mdx

@@ -15,11 +15,32 @@ Vue 3 components, providers, and composables.
 </StateProvider>
 ```
 
-| Prop | Type | Description |
-|------|------|-------------|
-| `store` | `StateStore` | External store (controlled mode). When provided, `initialState` and `onStateChange` are ignored. |
-| `initialState` | `Record<string, unknown>` | Initial state model (uncontrolled mode). |
-| `onStateChange` | `(changes: Array<{ path: string; value: unknown }>) => void` | Callback when state changes (uncontrolled mode). Called once per `set` or `update` with all changed entries. |
+<table>
+  <thead>
+    <tr>
+      <th>Prop</th>
+      <th>Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>store</code></td>
+      <td><code>StateStore</code></td>
+      <td>External store (controlled mode). When provided, <code>initialState</code> and <code>onStateChange</code> are ignored.</td>
+    </tr>
+    <tr>
+      <td><code>initialState</code></td>
+      <td><code>Record&lt;string, unknown&gt;</code></td>
+      <td>Initial state model (uncontrolled mode).</td>
+    </tr>
+    <tr>
+      <td><code>onStateChange</code></td>
+      <td><code>{'(changes: Array<{ path: string; value: unknown }>) => void'}</code></td>
+      <td>Callback when state changes (uncontrolled mode). Called once per <code>set</code> or <code>update</code> with all changed entries.</td>
+    </tr>
+  </tbody>
+</table>
 
 #### External Store (Controlled Mode)
 
@@ -230,17 +251,87 @@ const {
 
 ## Differences from `@json-render/react`
 
-| API | React | Vue | Note |
-|-----|-------|-----|------|
-| `useStateStore().state` | `StateModel` (plain object) | `ShallowRef<StateModel>` | Vue reactivity; use `state.value` |
-| `useStateValue()` | `T \| undefined` | `ComputedRef<T \| undefined>` | Vue reactivity; use `.value` |
-| `useStateBinding()` | `[T \| undefined, setter]` | `[ComputedRef<T \| undefined>, setter]` | Vue reactivity; use `value.value` |
-| `useAction().isLoading` | `boolean` | `ComputedRef<boolean>` | Vue reactivity; use `.value` |
-| `useFieldValidation().state` | `FieldValidationState` | `ComputedRef<FieldValidationState>` | Vue reactivity; use `.value` |
-| `useFieldValidation().errors` | `string[]` | `ComputedRef<string[]>` | Vue reactivity; use `.value` |
-| `useFieldValidation().isValid` | `boolean` | `ComputedRef<boolean>` | Vue reactivity; use `.value` |
-| `VisibilityContextValue.ctx` | `CoreVisibilityContext` | `ComputedRef<CoreVisibilityContext>` | Vue reactivity; use `ctx.value` |
-| `children` type | `React.ReactNode` | `VNode \| VNode[]` | Platform-specific |
-| `useBoundProp` | exported | exported | Same API; returns `[value, setValue]` |
-| `VisibilityProviderProps` | exported | not exported (no props) | Vue uses slot, no prop needed |
-| Streaming hooks | `useUIStream`, `useChatUI` | `useUIStream`, `useChatUI` | Same API; returns Vue `Ref` values |
+<table>
+  <thead>
+    <tr>
+      <th>API</th>
+      <th>React</th>
+      <th>Vue</th>
+      <th>Note</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>useStateStore().state</code></td>
+      <td><code>StateModel</code> (plain object)</td>
+      <td><code>ShallowRef&lt;StateModel&gt;</code></td>
+      <td>Vue reactivity; use <code>state.value</code></td>
+    </tr>
+    <tr>
+      <td><code>useStateValue()</code></td>
+      <td><code>T | undefined</code></td>
+      <td><code>ComputedRef&lt;T | undefined&gt;</code></td>
+      <td>Vue reactivity; use <code>.value</code></td>
+    </tr>
+    <tr>
+      <td><code>useStateBinding()</code></td>
+      <td><code>[T | undefined, setter]</code></td>
+      <td><code>[ComputedRef&lt;T | undefined&gt;, setter]</code></td>
+      <td>Vue reactivity; use <code>value.value</code></td>
+    </tr>
+    <tr>
+      <td><code>useAction().isLoading</code></td>
+      <td><code>boolean</code></td>
+      <td><code>ComputedRef&lt;boolean&gt;</code></td>
+      <td>Vue reactivity; use <code>.value</code></td>
+    </tr>
+    <tr>
+      <td><code>useFieldValidation().state</code></td>
+      <td><code>FieldValidationState</code></td>
+      <td><code>ComputedRef&lt;FieldValidationState&gt;</code></td>
+      <td>Vue reactivity; use <code>.value</code></td>
+    </tr>
+    <tr>
+      <td><code>useFieldValidation().errors</code></td>
+      <td><code>string[]</code></td>
+      <td><code>ComputedRef&lt;string[]&gt;</code></td>
+      <td>Vue reactivity; use <code>.value</code></td>
+    </tr>
+    <tr>
+      <td><code>useFieldValidation().isValid</code></td>
+      <td><code>boolean</code></td>
+      <td><code>ComputedRef&lt;boolean&gt;</code></td>
+      <td>Vue reactivity; use <code>.value</code></td>
+    </tr>
+    <tr>
+      <td><code>VisibilityContextValue.ctx</code></td>
+      <td><code>CoreVisibilityContext</code></td>
+      <td><code>ComputedRef&lt;CoreVisibilityContext&gt;</code></td>
+      <td>Vue reactivity; use <code>ctx.value</code></td>
+    </tr>
+    <tr>
+      <td><code>children</code> type</td>
+      <td><code>React.ReactNode</code></td>
+      <td><code>VNode | VNode[]</code></td>
+      <td>Platform-specific</td>
+    </tr>
+    <tr>
+      <td><code>useBoundProp</code></td>
+      <td>exported</td>
+      <td>exported</td>
+      <td>Same API; returns <code>[value, setValue]</code></td>
+    </tr>
+    <tr>
+      <td><code>VisibilityProviderProps</code></td>
+      <td>exported</td>
+      <td>not exported (no props)</td>
+      <td>Vue uses slot, no prop needed</td>
+    </tr>
+    <tr>
+      <td>Streaming hooks</td>
+      <td><code>useUIStream</code>, <code>useChatUI</code></td>
+      <td><code>useUIStream</code>, <code>useChatUI</code></td>
+      <td>Same API; returns Vue <code>Ref</code> values</td>
+    </tr>
+  </tbody>
+</table>

apps/web/app/(main)/docs/api/xstate/page.mdx

@@ -0,0 +1,77 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/xstate")
+
+# @json-render/xstate
+
+[XState Store](https://stately.ai/docs/xstate-store) adapter for json-render's `StateStore` interface.
+
+Requires `@xstate/store` v3+.
+
+## Installation
+
+```bash
+npm install @json-render/xstate @json-render/core @json-render/react @xstate/store
+```
+
+## xstateStoreStateStore
+
+Create a `StateStore` backed by an `@xstate/store` atom.
+
+```typescript
+import { xstateStoreStateStore } from "@json-render/xstate";
+```
+
+### Options
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Type</th>
+      <th>Required</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>atom</code></td>
+      <td><code>{'Atom<StateModel>'}</code></td>
+      <td>Yes</td>
+      <td>An <code>@xstate/store</code> atom (from <code>createAtom</code>) holding the json-render state model.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Example
+
+```typescript
+import { createAtom } from "@xstate/store";
+import { xstateStoreStateStore } from "@json-render/xstate";
+import { StateProvider } from "@json-render/react";
+
+const uiAtom = createAtom({ count: 0 });
+const store = xstateStoreStateStore({ atom: uiAtom });
+```
+
+```tsx
+<StateProvider store={store}>
+  {/* json-render reads/writes go through @xstate/store */}
+</StateProvider>
+```
+
+## Re-exports
+
+<table>
+  <thead>
+    <tr>
+      <th>Export</th>
+      <th>Source</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>StateStore</code></td>
+      <td><code>@json-render/core</code></td>
+    </tr>
+  </tbody>
+</table>

apps/web/app/(main)/docs/api/yaml/page.mdx

@@ -0,0 +1,232 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/yaml")
+
+# @json-render/yaml
+
+YAML wire format for json-render. Progressive rendering and surgical edits via streaming YAML.
+
+## Prompt Generation
+
+### yamlPrompt
+
+Generate a YAML-format system prompt from any json-render catalog. Works with catalogs from any renderer.
+
+```typescript
+function yamlPrompt(
+  catalog: Catalog,
+  options?: YamlPromptOptions
+): string
+```
+
+```typescript
+import { yamlPrompt } from "@json-render/yaml";
+
+const systemPrompt = yamlPrompt(catalog, {
+  mode: "standalone",
+  customRules: ["Always use dark theme"],
+  editModes: ["merge"],
+});
+```
+
+### YamlPromptOptions
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Type</th>
+      <th>Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>system</code></td>
+      <td><code>string</code></td>
+      <td><code>{'\"You are a UI generator that outputs YAML.\"'}</code></td>
+      <td>Custom system message intro</td>
+    </tr>
+    <tr>
+      <td><code>mode</code></td>
+      <td><code>{'\"standalone\" | \"inline\"'}</code></td>
+      <td><code>{'\"standalone\"'}</code></td>
+      <td>Standalone outputs only YAML; inline allows conversational responses with embedded YAML fences</td>
+    </tr>
+    <tr>
+      <td><code>customRules</code></td>
+      <td><code>{'string[]'}</code></td>
+      <td><code>{'[]'}</code></td>
+      <td>Additional rules appended to the prompt</td>
+    </tr>
+    <tr>
+      <td><code>editModes</code></td>
+      <td><code>{'EditMode[]'}</code></td>
+      <td><code>{'[\"merge\"]'}</code></td>
+      <td>Edit modes to document in the prompt (patch, merge, diff)</td>
+    </tr>
+  </tbody>
+</table>
+
+## AI SDK Transform
+
+### createYamlTransform
+
+Creates a `TransformStream` that intercepts AI SDK stream chunks and converts YAML spec/edit blocks into json-render patch data parts.
+
+```typescript
+function createYamlTransform(
+  options?: YamlTransformOptions
+): TransformStream<StreamChunk, StreamChunk>
+```
+
+Recognized fence types:
+
+- <code>{'```yaml-spec'}</code> -- Full YAML spec, parsed progressively
+- <code>{'```yaml-edit'}</code> -- Partial YAML, deep-merged with current spec
+- <code>{'```yaml-patch'}</code> -- RFC 6902 JSON Patch lines
+- <code>{'```diff'}</code> -- Unified diff against serialized spec
+
+### pipeYamlRender
+
+Convenience wrapper that pipes an AI SDK stream through the YAML transform. Drop-in replacement for `pipeJsonRender` from `@json-render/core`.
+
+```typescript
+function pipeYamlRender<T>(
+  stream: ReadableStream<T>,
+  options?: YamlTransformOptions
+): ReadableStream<T>
+```
+
+```typescript
+import { pipeYamlRender } from "@json-render/yaml";
+import { createUIMessageStream, createUIMessageStreamResponse } from "ai";
+
+const stream = createUIMessageStream({
+  execute: async ({ writer }) => {
+    writer.merge(pipeYamlRender(result.toUIMessageStream()));
+  },
+});
+return createUIMessageStreamResponse({ stream });
+```
+
+## Streaming Parser
+
+### createYamlStreamCompiler
+
+Create a streaming YAML compiler that incrementally parses YAML text and emits JSON Patch operations by diffing each successful parse against the previous snapshot.
+
+```typescript
+function createYamlStreamCompiler<T>(
+  initial?: Partial<T>
+): YamlStreamCompiler<T>
+```
+
+```typescript
+import { createYamlStreamCompiler } from "@json-render/yaml";
+
+const compiler = createYamlStreamCompiler<Spec>();
+
+compiler.push("root: main\n");
+compiler.push("elements:\n  main:\n    type: Card\n");
+
+const { result, newPatches } = compiler.flush();
+```
+
+### YamlStreamCompiler
+
+<table>
+  <thead>
+    <tr>
+      <th>Method</th>
+      <th>Returns</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>push(chunk)</code></td>
+      <td><code>{'{ result: T; newPatches: JsonPatch[] }'}</code></td>
+      <td>Push a chunk of text, returns current result and new patches</td>
+    </tr>
+    <tr>
+      <td><code>flush()</code></td>
+      <td><code>{'{ result: T; newPatches: JsonPatch[] }'}</code></td>
+      <td>Flush remaining buffer, return final result</td>
+    </tr>
+    <tr>
+      <td><code>getResult()</code></td>
+      <td><code>T</code></td>
+      <td>Get the current compiled result</td>
+    </tr>
+    <tr>
+      <td><code>getPatches()</code></td>
+      <td><code>{'JsonPatch[]'}</code></td>
+      <td>Get all patches applied so far</td>
+    </tr>
+    <tr>
+      <td><code>reset(initial?)</code></td>
+      <td><code>void</code></td>
+      <td>Reset to initial state</td>
+    </tr>
+  </tbody>
+</table>
+
+## Fence Constants
+
+Exported string constants for fence detection in custom parsers:
+
+<table>
+  <thead>
+    <tr>
+      <th>Constant</th>
+      <th>Value</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>YAML_SPEC_FENCE</code></td>
+      <td><code>{'\"```yaml-spec\"'}</code></td>
+    </tr>
+    <tr>
+      <td><code>YAML_EDIT_FENCE</code></td>
+      <td><code>{'\"```yaml-edit\"'}</code></td>
+    </tr>
+    <tr>
+      <td><code>YAML_PATCH_FENCE</code></td>
+      <td><code>{'\"```yaml-patch\"'}</code></td>
+    </tr>
+    <tr>
+      <td><code>DIFF_FENCE</code></td>
+      <td><code>{'\"```diff\"'}</code></td>
+    </tr>
+    <tr>
+      <td><code>FENCE_CLOSE</code></td>
+      <td><code>{'\"```\"'}</code></td>
+    </tr>
+  </tbody>
+</table>
+
+## Re-exports from @json-render/core
+
+### diffToPatches
+
+Generate RFC 6902 JSON Patch operations that transform one object into another.
+
+```typescript
+function diffToPatches(
+  oldObj: Record<string, unknown>,
+  newObj: Record<string, unknown>,
+  basePath?: string
+): JsonPatch[]
+```
+
+### deepMergeSpec
+
+Deep-merge with RFC 7396 semantics: `null` deletes, arrays replace, objects recurse.
+
+```typescript
+function deepMergeSpec(
+  base: Record<string, unknown>,
+  patch: Record<string, unknown>
+): Record<string, unknown>
+```

apps/web/app/(main)/docs/api/zustand/page.mdx

@@ -0,0 +1,108 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/zustand")
+
+# @json-render/zustand
+
+Zustand adapter for json-render's `StateStore` interface.
+
+Requires Zustand v5+. Zustand v4 is not supported due to breaking API changes in the vanilla store interface.
+
+## Installation
+
+```bash
+npm install @json-render/zustand @json-render/core @json-render/react zustand
+```
+
+## zustandStateStore
+
+Create a `StateStore` backed by a Zustand vanilla store.
+
+```typescript
+import { zustandStateStore } from "@json-render/zustand";
+```
+
+### Options
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Type</th>
+      <th>Required</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>store</code></td>
+      <td><code>{'StoreApi<S>'}</code></td>
+      <td>Yes</td>
+      <td>A Zustand vanilla store (from <code>createStore</code> in <code>zustand/vanilla</code>).</td>
+    </tr>
+    <tr>
+      <td><code>selector</code></td>
+      <td><code>{'(state: S) => StateModel'}</code></td>
+      <td>No</td>
+      <td>Select the json-render slice from the store state. Defaults to the entire state.</td>
+    </tr>
+    <tr>
+      <td><code>updater</code></td>
+      <td><code>{'(nextState: StateModel, store: StoreApi<S>) => void'}</code></td>
+      <td>No</td>
+      <td>Apply a state change back to the store. Defaults to a shallow merge.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Example
+
+```typescript
+import { createStore } from "zustand/vanilla";
+import { zustandStateStore } from "@json-render/zustand";
+import { StateProvider } from "@json-render/react";
+
+const bearStore = createStore(() => ({
+  count: 0,
+  name: "Bear",
+}));
+
+const store = zustandStateStore({ store: bearStore });
+```
+
+```tsx
+<StateProvider store={store}>
+  {/* json-render reads/writes go through Zustand */}
+</StateProvider>
+```
+
+### Nested Slice
+
+```typescript
+const appStore = createStore(() => ({
+  ui: { count: 0 },
+  auth: { token: null },
+}));
+
+const store = zustandStateStore({
+  store: appStore,
+  selector: (s) => s.ui,
+  updater: (next, s) => s.setState({ ui: next }),
+});
+```
+
+## Re-exports
+
+<table>
+  <thead>
+    <tr>
+      <th>Export</th>
+      <th>Source</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>StateStore</code></td>
+      <td><code>@json-render/core</code></td>
+    </tr>
+  </tbody>
+</table>

apps/web/app/(main)/docs/changelog/page.mdx

@@ -5,9 +5,385 @@ export const metadata = pageMetadata("docs/changelog")
 
 Notable changes and updates to json-render.
 
+## v0.19.0
+
+May 6, 2026
+
+### New: Custom Directives API
+
+`@json-render/core` now supports custom directives via `defineDirective`, letting you declare new JSON shapes (like `$format`, `$math`) that resolve to computed values at render time. Directives compose naturally -- nest `$format` over `$math` over `$state` and they resolve inside-out. All four renderers (React, Vue, Svelte, Solid) have built-in directive resolution.
+
+### New: `@json-render/directives`
+
+New package shipping seven ready-made directives: `$format` (date, currency, number, percent via `Intl`), `$math` (arithmetic and rounding), `$concat`, `$count`, `$truncate`, `$pluralize`, and `$join`. Also exports `createI18nDirective` for `$t` translation keys with interpolation, and `standardDirectives` for one-line registration.
+
+```bash
+npm install @json-render/directives
+```
+
+```tsx
+import { standardDirectives } from "@json-render/directives";
+
+const catalog = createCatalog({
+  directives: standardDirectives,
+  // ...
+});
+```
+
+See the [Directives guide](/docs/directives) and the [API reference](/docs/api/directives) for details.
+
+---
+
+## v0.18.0
+
+April 17, 2026
+
+### New: Devtools
+
+Five new packages for inspecting json-render apps in the browser:
+
+- `@json-render/devtools` -- framework-agnostic core
+- `@json-render/devtools-react`
+- `@json-render/devtools-vue`
+- `@json-render/devtools-svelte`
+- `@json-render/devtools-solid`
+
+Drop `<JsonRenderDevtools />` into your app to get a shadow-DOM-isolated panel with six tabs (Spec, State, Actions, Stream, Catalog, Pick), a DOM picker that maps clicked elements back to spec keys via `data-jr-key`, and a capped event store. Toggle with the floating button or `Cmd`/`Ctrl` + `Shift` + `J`. Tree-shakes to `null` in production.
+
+```bash
+npm install @json-render/devtools-react
+```
+
+```tsx
+import { JsonRenderDevtools } from "@json-render/devtools-react";
+
+<JsonRenderDevtools />
+```
+
+See the [Devtools guide](/docs/devtools) and the [API reference](/docs/api/devtools) for details.
+
+### New: Devtools Example
+
+New `examples/devtools` Next.js demo showing the full devtools panel wired up to an AI chat endpoint and a component catalog.
+
+### New: Action Observer and Devtools Flag in Core
+
+`@json-render/core` now exposes an action observer and a devtools enablement flag that framework adapters use to mirror actions and stream events into the panel.
+
+### Fixed: Zod 4 Schema Formatting
+
+`formatZodType` now correctly handles `z.record()`, `z.default()`, and `z.literal()` types from Zod 4, which previously produced incorrect or empty output in generated prompts and schemas.
+
+---
+
+## v0.17.0
+
+April 10, 2026
+
+### New: Gaussian Splatting
+
+Added `GaussianSplat` component to `@json-render/react-three-fiber`, bringing the component count to 20. Composable with all existing R3F components (lights, controls, post-processing) via drei's Splat loader.
+
+### New: R3F Gaussian Splatting Example
+
+Demo app with five scenes: splat showroom, splat with primitives, multi-splat, post-processing effects, and animated floating splat.
+
+### New: Standalone gsplat Example
+
+Experimental demo app showcasing Gaussian Splatting with gsplat.js (no Three.js dependency), featuring scene selector, live JSON spec viewer, and progress indicator.
+
+### Improved: AI Output Quality
+
+Improved prompt output and schema generation for more reliable AI-generated specs.
+
+---
+
+## v0.16.0
+
+March 27, 2026
+
+### New: `@json-render/next`
+
+Next.js renderer that turns JSON specs into full Next.js applications with routes, layouts, SSR, metadata, data loaders, and static generation. Client and server entry points at `@json-render/next` and `@json-render/next/server`. Includes built-in `Link`, `Slot`, error boundary, loading, and not-found components.
+
+```bash
+npm install @json-render/next
+```
+
+### New: `@json-render/shadcn-svelte`
+
+Pre-built shadcn-svelte components for json-render Svelte apps. 36 components built on Svelte 5 + Tailwind CSS with state binding, validation, and action support. Server-safe catalog at `@json-render/shadcn-svelte/catalog`.
+
+```bash
+npm install @json-render/shadcn-svelte
+```
+
+### Improved: Release Process
+
+Switched from Changesets to a manual single-PR release workflow with changelog markers and automatic npm publish on version bump.
+
+---
+
+## v0.15.0
+
+March 23, 2026
+
+### New: `@json-render/ink`
+
+Terminal renderer for json-render. JSON becomes terminal UIs powered by [Ink](https://github.com/vadimdemedes/ink). Stream AI-generated specs directly to the terminal with `useUIStream`.
+
+```bash
+npm install @json-render/ink
+```
+
+### Improved: YAML Format Support in `buildUserPrompt`
+
+`buildUserPrompt` now accepts `format` and `serializer` options, enabling YAML as a wire format alongside JSON.
+
+---
+
+## v0.14.0
+
+March 13, 2026
+
+### New: `@json-render/yaml`
+
+YAML wire format for json-render. Includes streaming YAML parser, `yamlPrompt()` for system prompts, and AI SDK transform (`pipeYamlRender`) as a drop-in alternative to JSONL streaming. Supports four fence types: `yaml-spec`, `yaml-edit`, `yaml-patch`, and `diff`.
+
+```bash
+npm install @json-render/yaml
+```
+
+### New: Universal Edit Modes
+
+Three strategies for multi-turn spec refinement in `@json-render/core`:
+
+- **Patch** -- RFC 6902 JSON Patch
+- **Merge** -- RFC 7396 Merge Patch
+- **Diff** -- Unified diff
+
+New `editModes` option on `buildUserPrompt()` and `PromptOptions`. New helpers: `deepMergeSpec()`, `diffToPatches()`, `buildEditUserPrompt()`, `buildEditInstructions()`, `isNonEmptySpec()`.
+
+### Improved: Playground
+
+Format toggle (JSONL / YAML), edit mode picker (patch / merge / diff), and token usage display with prompt caching stats.
+
+### Improved: Prompt Caching
+
+Generate API uses Anthropic ephemeral cache control for system prompts.
+
+---
+
+## v0.13.0
+
+March 12, 2026
+
+### New: `@json-render/solid`
+
+SolidJS renderer for json-render. JSON becomes Solid components with reactive rendering, schema export, and full catalog support.
+
+```bash
+npm install @json-render/core @json-render/solid
+```
+
+### New: `@json-render/react-three-fiber`
+
+React Three Fiber renderer for json-render. JSON becomes 3D scenes with 19 built-in components for meshes, lights, models, environments, text, cameras, and controls.
+
+```bash
+npm install @json-render/react-three-fiber
+```
+
+### Improved: Strict JSON Schema Mode
+
+`catalog.jsonSchema({ strict: true })` produces a JSON Schema subset compatible with LLM structured output APIs (OpenAI, Google Gemini, Anthropic). Ensures `additionalProperties: false` on every object and all properties listed in `required`.
+
+---
+
+## v0.12.1
+
+March 11, 2026
+
+### Changed: Generation Mode Renames
+
+Renamed generation modes from `"generate"` / `"chat"` to `"standalone"` / `"inline"`. The old names still work but emit a deprecation warning.
+
+### Fixed: MCP React Duplicate Module Error
+
+Resolved React duplicate module error (`useRef` returning null) in `@json-render/mcp` by adding `resolve.dedupe` Vite configuration. Added `./build-app-html` export entry point.
+
+---
+
+## v0.12.0
+
+March 6, 2026
+
+### New: `@json-render/svelte`
+
+Svelte 5 renderer with runes-based reactivity. Full support for data binding, visibility, actions, validation, watchers, streaming, and repeat scopes. Includes `defineRegistry`, `Renderer`, `schema`, composables, and context providers.
+
+```bash
+npm install @json-render/core @json-render/svelte
+```
+
+### New: `@json-render/react-email`
+
+React Email renderer for generating HTML and plain-text emails from JSON specs. 17 standard components (Html, Head, Body, Container, Section, Row, Column, Heading, Text, Link, Button, Image, Hr, Preview, Markdown). Server-side `renderToHtml` / `renderToPlainText` APIs.
+
+```bash
+npm install @json-render/react-email
+```
+
+### New: `@json-render/mcp`
+
+MCP Apps integration that serves json-render UIs as interactive apps inside Claude, ChatGPT, Cursor, VS Code, and other MCP-capable clients. `createMcpApp` server factory, `useJsonRenderApp` React hook for iframes, and `buildAppHtml` utility.
+
+```bash
+npm install @json-render/mcp
+```
+
+---
+
+## v0.11.0
+
+February 27, 2026
+
+### New: `@json-render/image`
+
+Server-side image renderer powered by Satori. Turns the same `{ root, elements }` spec format into SVG or PNG output for OG images, social cards, and banners.
+
+```bash
+npm install @json-render/image
+```
+
+```typescript
+import { renderToSvg, renderToPng } from "@json-render/image/render";
+import { standardComponentDefinitions } from "@json-render/image/catalog";
+
+const svg = await renderToSvg(spec, { width: 1200, height: 630 });
+const png = await renderToPng(spec, { width: 1200, height: 630 });
+```
+
+9 standard components: Frame, Box, Row, Column, Heading, Text, Image, Divider, Spacer. Server-safe import path at `@json-render/image/server`.
+
+---
+
+## v0.10.0
+
+February 25, 2026
+
+### New: `@json-render/vue`
+
+Vue 3 renderer for json-render with full feature parity with `@json-render/react`. Data binding, visibility conditions, actions, validation, repeat scopes, streaming, and external store support.
+
+```bash
+npm install @json-render/core @json-render/vue
+```
+
+```typescript
+import { h } from "vue";
+import { defineRegistry, Renderer } from "@json-render/vue";
+import { schema } from "@json-render/vue/schema";
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: ({ props, children }) =>
+      h("div", { class: "card" }, [h("h3", null, props.title), children]),
+    Button: ({ props, emit }) =>
+      h("button", { onClick: () => emit("press") }, props.label),
+  },
+});
+```
+
+Providers: `StateProvider`, `ActionProvider`, `VisibilityProvider`, `ValidationProvider`. Composables: `useStateStore`, `useStateValue`, `useActions`, `useAction`, `useIsVisible`, `useFieldValidation`, `useBoundProp`, `useUIStream`, `useChatUI`.
+
+See the [Vue API reference](/docs/api/vue) for details.
+
+### New: `@json-render/xstate`
+
+[XState Store](https://stately.ai/docs/xstate-store) (atom) adapter for json-render's `StateStore` interface. Wire an `@xstate/store` atom as the state backend for any renderer.
+
+```bash
+npm install @json-render/xstate @xstate/store
+```
+
+```typescript
+import { createAtom } from "@xstate/store";
+import { xstateStoreStateStore } from "@json-render/xstate";
+
+const atom = createAtom({ count: 0 });
+const store = xstateStoreStateStore({ atom });
+```
+
+Requires `@xstate/store` v3+.
+
+### New: `$computed` and `$template` Expressions
+
+Two new prop expression types for dynamic values:
+
+- **`$template`** -- interpolate state values into strings: `{ "$template": "Hello, ${/user/name}!" }`
+- **`$computed`** -- call registered functions: `{ "$computed": "fullName", "args": { "first": { "$state": "/form/firstName" } } }`
+
+Register functions via the `functions` prop on `JSONUIProvider` or `createRenderer`. See [Computed Values](/docs/computed-values) for details.
+
+### New: State Watchers
+
+Elements can declare a `watch` field to trigger actions when state values change. Useful for cascading dependencies like country/city selects.
+
+```json
+{
+  "type": "Select",
+  "props": { "value": { "$bindState": "/form/country" }, "options": ["US", "Canada"] },
+  "watch": {
+    "/form/country": { "action": "loadCities", "params": { "country": { "$state": "/form/country" } } }
+  }
+}
+```
+
+`watch` is a top-level field on elements (sibling of type/props/children), not inside props. Watchers only fire on value changes, not on initial render. See [Watchers](/docs/watchers) for details.
+
+### New: Cross-Field Validation
+
+New built-in validation functions for cross-field comparisons:
+
+- `equalTo` -- alias for `matches` with clearer semantics
+- `lessThan` -- value must be less than another field
+- `greaterThan` -- value must be greater than another field
+- `requiredIf` -- required only when a condition field is truthy
+
+Validation check args now resolve through `resolvePropValue`, so `$state` expressions work consistently.
+
+### New: `validateForm` Action
+
+Built-in action (React) that validates all registered form fields at once and writes `{ valid, errors }` to state:
+
+```json
+{
+  "on": {
+    "press": [
+      { "action": "validateForm", "params": { "statePath": "/formResult" } },
+      { "action": "submitForm" }
+    ]
+  }
+}
+```
+
+### Improved: shadcn/ui Validation
+
+All form components now support `checks` and `validateOn` props:
+- Checkbox, Radio, Switch added validation support
+- `validateOn` controls timing: `"change"` (default for Select, Checkbox, Radio, Switch), `"blur"` (default for Input, Textarea), or `"submit"`
+
+### New Examples
+
+- **Vue example** -- standalone Vue 3 app with custom components
+- **Vite Renderers** -- side-by-side React and Vue renderers with shared catalog
+
+---
+
 ## v0.9.1
 
-February 2026
+February 24, 2026
 
 ### Fixed: Install failure due to private dependency
 
@@ -17,7 +393,7 @@ February 2026
 
 ## v0.9.0
 
-February 2026
+February 24, 2026
 
 ### New: External State Store
 
@@ -71,7 +447,7 @@ Fixed safely resolving the inner type for Zod arrays in schema introspection, pr
 
 ## v0.8.0
 
-February 2026
+February 20, 2026
 
 ### New: `@json-render/react-pdf`
 
@@ -133,7 +509,7 @@ Supports custom catalogs with `defineRegistry`, server-safe imports via `@json-r
 
 ## v0.7.0
 
-February 2026
+February 17, 2026
 
 ### New: `@json-render/shadcn`
 
@@ -224,10 +600,12 @@ Action bindings now support a `preventDefault` boolean field, allowing the LLM t
 
 ## v0.6.0
 
-February 2026
+February 13, 2026
 
 ### New: Chat Mode (Inline GenUI)
 
+> **Note:** These modes were renamed in v0.12.1 — "Generate" is now "Standalone" and "Chat" is now "Inline". The old names are accepted as deprecated aliases.
+
 json-render now supports two generation modes: **Generate** (JSONL-only, the default) and **Chat** (text + JSONL inline). Chat mode lets the AI respond conversationally with embedded UI specs, ideal for chatbots and copilot experiences.
 
 ```typescript
@@ -364,7 +742,7 @@ See the [Migration Guide](/docs/migration) for detailed upgrade instructions.
 
 ## v0.5.0
 
-February 2026
+February 9, 2026
 
 ### New: @json-render/react-native
 
@@ -483,7 +861,7 @@ Schema prompts now include streaming best practices, repeat/list examples, and s
 
 ## v0.4.0
 
-February 2026
+February 5, 2026
 
 ### New: Custom Schema System
 
@@ -618,7 +996,7 @@ The dashboard example is now a full-featured accounting dashboard with:
 
 ## v0.3.0
 
-January 2026
+January 20, 2026
 
 Internal release with codegen foundations.
 
@@ -632,7 +1010,7 @@ Internal release with codegen foundations.
 
 ## v0.2.0
 
-January 2026
+January 14, 2026
 
 Initial public release.
 

apps/web/app/(main)/docs/devtools/page.mdx

@@ -0,0 +1,207 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/devtools")
+
+# Devtools
+
+A drop-in inspector panel for any json-render app. See the spec tree, edit state inline, watch dispatched actions, follow stream patches live, browse your catalog, and pick DOM elements to map them back to spec keys.
+
+Production-safe: the component tree-shakes to a null render when `NODE_ENV === "production"`.
+
+## Install
+
+Pick the adapter that matches your renderer.
+
+### React
+
+```bash
+npm install @json-render/devtools @json-render/devtools-react
+```
+
+### Vue
+
+```bash
+npm install @json-render/devtools @json-render/devtools-vue
+```
+
+### Svelte
+
+```bash
+npm install @json-render/devtools @json-render/devtools-svelte
+```
+
+### Solid
+
+```bash
+npm install @json-render/devtools @json-render/devtools-solid
+```
+
+## Quick Start
+
+Drop `<JsonRenderDevtools />` anywhere inside your existing `<JSONUIProvider>` (or the equivalent provider tree).
+
+```tsx
+// React
+import { JsonRenderDevtools } from "@json-render/devtools-react";
+
+<JSONUIProvider registry={registry} handlers={handlers}>
+  <Renderer spec={spec} registry={registry} />
+  <JsonRenderDevtools spec={spec} catalog={catalog} />
+</JSONUIProvider>
+```
+
+That's it. A floating toggle appears in the bottom-right corner. Click it, or press <kbd>Ctrl</kbd>/<kbd>Cmd</kbd> + <kbd>Shift</kbd> + <kbd>J</kbd>, to open the drawer.
+
+### Chat apps (AI SDK)
+
+When you're using `@ai-sdk/react`'s `useChat`, pass the `messages` prop so the Stream tab captures spec patches as they arrive:
+
+```tsx
+<JsonRenderDevtools
+  spec={spec}
+  catalog={catalog}
+  messages={messages}
+/>
+```
+
+## Panels
+
+<table>
+  <thead>
+    <tr><th>Tab</th><th>What it shows</th></tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><strong>Spec</strong></td>
+      <td>Element tree rooted at <code>spec.root</code>. Expand to walk children. Selecting an element fills a detail pane with its full props, visibility condition, event bindings, watchers, and any issues reported by <code>validateSpec</code>.</td>
+    </tr>
+    <tr>
+      <td><strong>State</strong></td>
+      <td>Every leaf path in the state model listed via <code>flattenToPointers</code>. Click a value to edit inline — writes go through <code>store.set</code>, so conditional elements and computed props re-evaluate immediately.</td>
+    </tr>
+    <tr>
+      <td><strong>Actions</strong></td>
+      <td>Timeline of dispatched actions: name, params, result or error, duration. Newest first. Expand a row for the full JSON payload.</td>
+    </tr>
+    <tr>
+      <td><strong>Stream</strong></td>
+      <td>Patches, text chunks, token usage, and lifecycle markers from the AI generation stream. Grouped by generation.</td>
+    </tr>
+    <tr>
+      <td><strong>Catalog</strong></td>
+      <td>Components and actions declared in your catalog with prop chips and type hints.</td>
+    </tr>
+    <tr>
+      <td><strong>Pick</strong></td>
+      <td>Click any element in the page to surface its entry in the Spec tab. Works because the renderer transparently tags each element with <code>data-jr-key</code> while devtools is mounted.</td>
+    </tr>
+  </tbody>
+</table>
+
+## Props
+
+<table>
+  <thead>
+    <tr><th>Prop</th><th>Type</th><th>Default</th><th>Description</th></tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>spec</code></td>
+      <td><code>Spec | null</code></td>
+      <td><code>null</code></td>
+      <td>The spec currently being rendered.</td>
+    </tr>
+    <tr>
+      <td><code>catalog</code></td>
+      <td><code>Catalog | null</code></td>
+      <td><code>null</code></td>
+      <td>Catalog definition — required for the Catalog panel.</td>
+    </tr>
+    <tr>
+      <td><code>messages</code></td>
+      <td><code>UIMessage[]</code></td>
+      <td><code>undefined</code></td>
+      <td>AI SDK <code>useChat</code> messages. Scanned for spec data parts and streamed into the Stream panel.</td>
+    </tr>
+    <tr>
+      <td><code>initialOpen</code></td>
+      <td><code>boolean</code></td>
+      <td><code>false</code></td>
+      <td>Start the drawer open.</td>
+    </tr>
+    <tr>
+      <td><code>position</code></td>
+      <td><code>"bottom-right" | "bottom-left" | "right"</code></td>
+      <td><code>"bottom-right"</code></td>
+      <td>Floating toggle button position.</td>
+    </tr>
+    <tr>
+      <td><code>hotkey</code></td>
+      <td><code>string | false</code></td>
+      <td><code>"mod+shift+j"</code></td>
+      <td>Keyboard shortcut. Use <code>mod</code> for Cmd on macOS / Ctrl elsewhere. Pass <code>false</code> to disable.</td>
+    </tr>
+    <tr>
+      <td><code>bufferSize</code></td>
+      <td><code>number</code></td>
+      <td><code>500</code></td>
+      <td>Max events retained in the ring buffer.</td>
+    </tr>
+    <tr>
+      <td><code>onEvent</code></td>
+      <td><code>(evt: DevtoolsEvent) =&gt; void</code></td>
+      <td><code>undefined</code></td>
+      <td>Optional tap — fires for every event as it is recorded. Useful for forwarding to analytics.</td>
+    </tr>
+  </tbody>
+</table>
+
+## Production Safety
+
+The component renders `null` when `process.env.NODE_ENV === "production"`. Bundlers fold the constant check so the panel's code tree-shakes out of production builds.
+
+If you want extra certainty, gate the import behind an env check:
+
+```tsx
+import dynamic from "next/dynamic";
+
+const JsonRenderDevtools = dynamic(
+  () =>
+    import("@json-render/devtools-react").then((m) => ({
+      default: m.JsonRenderDevtools,
+    })),
+  { ssr: false, loading: () => null },
+);
+```
+
+## Advanced
+
+### Imperative controls
+
+Use `useJsonRenderDevtools()` (React adapter only) to open / close the panel or record custom events from anywhere in the app:
+
+```tsx
+import { useJsonRenderDevtools } from "@json-render/devtools-react";
+
+function DebugButton() {
+  const devtools = useJsonRenderDevtools();
+  return (
+    <button onClick={() => devtools?.toggle()}>Toggle devtools</button>
+  );
+}
+```
+
+### Server-side stream tap
+
+Capture stream events before they reach the client. Useful for server logs:
+
+```ts
+import { tapJsonRenderStream } from "@json-render/devtools";
+
+const tapped = tapJsonRenderStream(
+  result.toUIMessageStream(),
+  serverEventStore,
+);
+writer.merge(pipeJsonRender(tapped));
+```
+
+The `@json-render/devtools` core package exports `tapJsonRenderStream` and `tapYamlStream` for this pattern.

apps/web/app/(main)/docs/directives/page.mdx

@@ -0,0 +1,124 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/directives")
+
+# Directives
+
+Extend the spec language with custom `$`-prefixed dynamic values. Directives let you add formatting, math, string manipulation, i18n, and any other transformation without modifying core.
+
+## Overview
+
+A directive is a user-defined dynamic value expression, like `$state` or `$computed`, but defined in userland. Each directive has a `$`-prefixed name, a Zod schema for validation, and a resolver function.
+
+```json
+{
+  "type": "Text",
+  "props": {
+    "text": {
+      "$format": "currency",
+      "value": { "$state": "/cart/total" },
+      "currency": "USD"
+    }
+  },
+  "children": []
+}
+```
+
+## Defining a Directive
+
+Use `defineDirective` from `@json-render/core`:
+
+```typescript
+import { defineDirective, resolvePropValue } from '@json-render/core';
+import { z } from 'zod';
+
+const doubleDirective = defineDirective({
+  name: '$double',
+  description: 'Double a numeric value.',
+  schema: z.object({
+    $double: z.unknown(),
+  }),
+  resolve(value, ctx) {
+    const resolved = resolvePropValue(value.$double, ctx);
+    return (resolved as number) * 2;
+  },
+});
+```
+
+The `description` field is optional. When generating prompts, the directive's schema fields are auto-described from the Zod schema; the `description` adds short behavioral context the schema can't express.
+
+## Wiring Directives
+
+Pass directives to both the renderer (for runtime resolution) and the catalog prompt (for AI generation).
+
+### Runtime
+
+```tsx
+import { JSONUIProvider, Renderer } from '@json-render/react';
+import { standardDirectives } from '@json-render/directives';
+
+<JSONUIProvider registry={registry} directives={standardDirectives}>
+  <Renderer spec={spec} registry={registry} />
+</JSONUIProvider>
+```
+
+Or with `createRenderer`:
+
+```tsx
+const MyRenderer = createRenderer(catalog, components);
+
+<MyRenderer spec={spec} directives={directives} />
+```
+
+All four renderers (React, Vue, Svelte, Solid) accept the `directives` prop on their provider and `createRenderer` output.
+
+### Prompt Generation
+
+```typescript
+const prompt = catalog.prompt({ directives });
+```
+
+Each directive's schema is auto-described in the "CUSTOM DYNAMIC VALUES" section of the system prompt. The optional `description` field adds behavioral context inline.
+
+## Pre-built Directives
+
+The `@json-render/directives` package ships ready-to-use directives:
+
+```typescript
+import { standardDirectives, createI18nDirective } from '@json-render/directives';
+```
+
+`standardDirectives` includes `$format`, `$math`, `$concat`, `$count`, `$truncate`, `$pluralize`, and `$join`. Add factory directives by spreading:
+
+```typescript
+const directives = [...standardDirectives, createI18nDirective(config)];
+```
+
+See the [API reference](/docs/api/directives) for details on each directive.
+
+## Composition
+
+Directives compose naturally. Each resolver calls `resolvePropValue` on its inputs, so directives can wrap other directives or built-in expressions like `$state`:
+
+```json
+{
+  "$format": "currency",
+  "value": {
+    "$math": "multiply",
+    "a": { "$state": "/price" },
+    "b": { "$state": "/qty" }
+  },
+  "currency": "USD"
+}
+```
+
+This resolves inside-out: `$state` reads from state, `$math` multiplies the values, and `$format` formats the result as currency.
+
+## Built-in Precedence
+
+Built-in expressions (`$state`, `$computed`, `$cond`, `$template`, etc.) always take precedence over custom directives. `defineDirective` throws if you try to register a name that conflicts with a built-in key.
+
+## Next
+
+- [API Reference](/docs/api/directives) — full directive reference
+- [Computed Values](/docs/computed-values) — `$computed` and `$template` expressions
+- [Data Binding](/docs/data-binding) — `$state`, `$item`, and binding expressions

apps/web/app/(main)/docs/generation-modes/page.mdx

@@ -3,15 +3,15 @@ export const metadata = pageMetadata("docs/generation-modes")
 
 # Generation Modes
 
-json-render supports two modes for AI-generated UI: **Generate mode** for standalone UI and **Chat mode** for inline UI within a conversation.
+json-render supports two modes for AI-generated UI: **Standalone mode** for standalone UI and **Inline mode** for inline UI within a conversation.
 
 The mode controls how the AI formats its output and how your app processes the stream. The underlying JSONL patch format is the same in both modes.
 
 <GenerationModesDiagram />
 
-## Generate Mode (Standalone)
+## Standalone Mode
 
-In generate mode, the AI outputs **only JSONL patches** — no prose, no markdown. The entire response is a UI spec.
+In standalone mode, the AI outputs **only JSONL patches** — no prose, no markdown. The entire response is a UI spec.
 
 This is the default mode and is ideal for:
 
@@ -25,7 +25,7 @@ This is the default mode and is ideal for:
 ```typescript
 import { streamText } from "ai";
 
-// Generate mode is the default (no mode option needed)
+// Standalone mode is the default (no mode option needed)
 const systemPrompt = catalog.prompt({
   customRules: [
     "Use Card as root for forms and small UIs.",
@@ -74,9 +74,9 @@ The AI outputs only JSONL — one patch per line, no surrounding text:
 {"op":"add","path":"/elements/submit","value":{"type":"Button","props":{"label":"Sign In"}}}
 ```
 
-## Chat Mode (Inline)
+## Inline Mode
 
-In chat mode, the AI responds **conversationally first**, then outputs JSONL patches on their own lines. Text-only replies are allowed when no UI is needed (e.g. greetings, clarifying questions).
+In inline mode, the AI responds **conversationally first**, then outputs JSONL patches on their own lines. Text-only replies are allowed when no UI is needed (e.g. greetings, clarifying questions).
 
 This is ideal for:
 
@@ -92,8 +92,8 @@ import { streamText } from "ai";
 import { pipeJsonRender } from "@json-render/core";
 import { createUIMessageStream, createUIMessageStreamResponse } from "ai";
 
-// Enable chat mode
-const systemPrompt = catalog.prompt({ mode: "chat" });
+// Enable inline mode
+const systemPrompt = catalog.prompt({ mode: "inline" });
 
 const result = streamText({
   model: yourModel,
@@ -180,8 +180,8 @@ If the user asks a simple question ("what does BTC stand for?"), the AI replies
     <thead>
       <tr>
         <th />
-        <th>Generate</th>
-        <th>Chat</th>
+        <th>Standalone</th>
+        <th>Inline</th>
       </tr>
     </thead>
     <tbody>
@@ -198,7 +198,7 @@ If the user asks a simple question ("what does BTC stand for?"), the AI replies
       <tr>
         <td>System prompt</td>
         <td><code>{"catalog.prompt()"}</code></td>
-        <td><code>{'catalog.prompt({ mode: "chat" })'}</code></td>
+        <td><code>{'catalog.prompt({ mode: "inline" })'}</code></td>
       </tr>
       <tr>
         <td>Stream utility</td>

apps/web/app/(main)/docs/installation/page.mdx

@@ -21,6 +21,14 @@ Peer dependencies: `vue ^3.5.0` and `zod ^4.0.0`.
 
 <PackageInstall packages="vue zod" />
 
+## For Svelte
+
+<PackageInstall packages="@json-render/core @json-render/svelte" />
+
+Peer dependencies: `svelte ^5.0.0` and `zod ^4.0.0`.
+
+<PackageInstall packages="svelte zod" />
+
 ## For React UI with shadcn/ui
 
 Pre-built components for fast prototyping and production use:
@@ -37,6 +45,10 @@ Requires Tailwind CSS in your project. See the [@json-render/shadcn API referenc
 
 <PackageInstall packages="@json-render/core @json-render/remotion remotion @remotion/player" />
 
+## For React Email
+
+<PackageInstall packages="@json-render/core @json-render/react-email @react-email/components @react-email/render" />
+
 ## For External State Management (Optional)
 
 If you want to wire json-render to an existing state management library instead of the built-in store, install the adapter for your library:
@@ -47,6 +59,8 @@ If you want to wire json-render to an existing state management library instead
 
 <PackageInstall packages="@json-render/jotai" />
 
+<PackageInstall packages="@json-render/xstate" />
+
 See the [Data Binding](/docs/data-binding#external-store-controlled-mode) guide for usage.
 
 ## For AI Integration

apps/web/app/(main)/docs/layout.tsx

@@ -1,6 +1,7 @@
 import { DocsMobileNav } from "@/components/docs-mobile-nav";
 import { DocsSidebar } from "@/components/docs-sidebar";
 import { CopyPageButton } from "@/components/copy-page-button";
+import { TableOfContents } from "@/components/table-of-contents";
 
 export default function DocsLayout({
   children,
@@ -10,7 +11,7 @@ export default function DocsLayout({
   return (
     <>
       <DocsMobileNav />
-      <div className="max-w-5xl mx-auto px-6 py-8 lg:py-12 flex gap-16">
+      <div className="max-w-7xl mx-auto px-6 py-8 lg:py-12 flex gap-12">
         {/* Sidebar */}
         <aside className="w-48 shrink-0 hidden lg:block sticky top-28 h-[calc(100vh-7rem)] overflow-y-auto">
           <DocsSidebar />
@@ -23,6 +24,11 @@ export default function DocsLayout({
           </div>
           <article>{children}</article>
         </div>
+
+        {/* On this page */}
+        <aside className="w-44 shrink-0 hidden xl:block sticky top-28 h-[calc(100vh-7rem)] overflow-y-auto">
+          <TableOfContents />
+        </aside>
       </div>
     </>
   );

apps/web/app/(main)/docs/migration/page.mdx

@@ -31,15 +31,23 @@ import { StateProvider } from "@json-render/react";
 
 `StateProvider` now manages state internally. Use `useStateStore()` to access `get`, `set`, and `update`.
 
-| Before | After |
-|--------|-------|
-| `DataProvider` | `StateProvider` |
-| `data` prop | `initialState` prop |
-| `getValue` / `setValue` props | Removed (use `useStateStore()` hook for `get` / `set`) |
-| `useData` | `useStateStore` |
-| `useDataValue` | `useStateValue` |
-| `useDataBinding` | `useStateBinding` (deprecated, use `useBoundProp` instead) |
-| `DataModel` type | `StateModel` type |
+<table>
+<thead>
+<tr>
+<th>Before</th>
+<th>After</th>
+</tr>
+</thead>
+<tbody>
+<tr><td><code>DataProvider</code></td><td><code>StateProvider</code></td></tr>
+<tr><td><code>data</code> prop</td><td><code>initialState</code> prop</td></tr>
+<tr><td><code>getValue</code> / <code>setValue</code> props</td><td>Removed (use <code>useStateStore()</code> hook for <code>get</code> / <code>set</code>)</td></tr>
+<tr><td><code>useData</code></td><td><code>useStateStore</code></td></tr>
+<tr><td><code>useDataValue</code></td><td><code>useStateValue</code></td></tr>
+<tr><td><code>useDataBinding</code></td><td><code>useStateBinding</code> (deprecated, use <code>useBoundProp</code> instead)</td></tr>
+<tr><td><code>DataModel</code> type</td><td><code>StateModel</code> type</td></tr>
+</tbody>
+</table>
 
 ## Dynamic Expressions
 
@@ -81,10 +89,18 @@ Inside repeat scopes, use `$item` and `$index`:
 }
 ```
 
-| Before | After |
-|--------|-------|
-| `{ "$path": "/..." }` | `{ "$state": "/..." }` |
-| `{ "$data": "/..." }` | `{ "$state": "/..." }` |
+<table>
+<thead>
+<tr>
+<th>Before</th>
+<th>After</th>
+</tr>
+</thead>
+<tbody>
+<tr><td><code>{'{ "$path": "/..." }'}</code></td><td><code>{'{ "$state": "/..." }'}</code></td></tr>
+<tr><td><code>{'{ "$data": "/..." }'}</code></td><td><code>{'{ "$state": "/..." }'}</code></td></tr>
+</tbody>
+</table>
 
 ## Two-Way Binding
 
@@ -293,10 +309,35 @@ const catalog = defineCatalog(schema, {
 
 const prompt = catalog.prompt();
 
-// Chat mode prompt
+// Inline mode prompt (formerly "chat")
+const inlinePrompt = catalog.prompt({ mode: "inline" });
+```
+
+## Generation Modes
+
+The generation mode values passed to `catalog.prompt()` have been renamed for clarity:
+
+- `"generate"` is now `"standalone"`
+- `"chat"` is now `"inline"`
+
+The old names are accepted as deprecated aliases, so existing code will continue to work. Update when convenient.
+
+**Before:**
+
+```typescript
+const prompt = catalog.prompt({ mode: "generate" });
 const chatPrompt = catalog.prompt({ mode: "chat" });
 ```
 
+**After:**
+
+```typescript
+const prompt = catalog.prompt({ mode: "standalone" });
+const inlinePrompt = catalog.prompt({ mode: "inline" });
+```
+
+The default mode (when no `mode` option is provided) is `"standalone"`, which behaves identically to the previous `"generate"` default.
+
 ## Validation
 
 `ValidationCheck` now uses `type` instead of `fn`, `ValidationProvider` uses `customFunctions` instead of `functions`, and `useFieldValidation` takes a config object instead of a checks array.
@@ -315,11 +356,19 @@ const chatPrompt = catalog.prompt({ mode: "chat" });
 { "type": "minLength", "args": { "min": 8 }, "message": "Too short" }
 ```
 
-| Before | After |
-|--------|-------|
-| `{ fn: "required" }` | `{ type: "required" }` |
-| `ValidationProvider functions={...}` | `ValidationProvider customFunctions={...}` |
-| `useFieldValidation(path, checks)` | `useFieldValidation(path, config)` where config is `{ checks, validateOn? }` |
+<table>
+<thead>
+<tr>
+<th>Before</th>
+<th>After</th>
+</tr>
+</thead>
+<tbody>
+<tr><td><code>{'{ fn: "required" }'}</code></td><td><code>{'{ type: "required" }'}</code></td></tr>
+<tr><td><code>{'ValidationProvider functions={...}'}</code></td><td><code>{'ValidationProvider customFunctions={...}'}</code></td></tr>
+<tr><td><code>useFieldValidation(path, checks)</code></td><td><code>useFieldValidation(path, config)</code> where config is <code>{'{ checks, validateOn? }'}</code></td></tr>
+</tbody>
+</table>
 
 ## Visibility Provider
 
@@ -398,16 +447,57 @@ Action params in specs now use `statePath` instead of `path`.
 
 The following exports have been removed from `@json-render/core`:
 
-| Removed | Replacement |
-|---------|-------------|
-| `createCatalog` | `defineCatalog(schema, config)` |
-| `generateCatalogPrompt` | `catalog.prompt()` |
-| `generateSystemPrompt` | `catalog.prompt()` |
-| `ComponentDefinition` | Use catalog component config directly |
-| `CatalogConfig` | Use `defineCatalog` parameters |
-| `SystemPromptOptions` | Use `PromptOptions` |
-| `LogicExpression` | Use `VisibilityCondition` |
-| `AuthState` | Model auth as regular state (e.g. `/auth/isSignedIn`) |
-| `evaluateLogicExpression` | Use `evaluateVisibility` |
-| `createRendererFromCatalog` | Use `defineRegistry` |
-| `traverseTree` (codegen) | Use `traverseSpec` |
+<table>
+  <thead>
+    <tr>
+      <th>Removed</th>
+      <th>Replacement</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>createCatalog</code></td>
+      <td><code>defineCatalog(schema, config)</code></td>
+    </tr>
+    <tr>
+      <td><code>generateCatalogPrompt</code></td>
+      <td><code>catalog.prompt()</code></td>
+    </tr>
+    <tr>
+      <td><code>generateSystemPrompt</code></td>
+      <td><code>catalog.prompt()</code></td>
+    </tr>
+    <tr>
+      <td><code>ComponentDefinition</code></td>
+      <td>Use catalog component config directly</td>
+    </tr>
+    <tr>
+      <td><code>CatalogConfig</code></td>
+      <td>Use <code>defineCatalog</code> parameters</td>
+    </tr>
+    <tr>
+      <td><code>SystemPromptOptions</code></td>
+      <td>Use <code>PromptOptions</code></td>
+    </tr>
+    <tr>
+      <td><code>LogicExpression</code></td>
+      <td>Use <code>VisibilityCondition</code></td>
+    </tr>
+    <tr>
+      <td><code>AuthState</code></td>
+      <td>Model auth as regular state (e.g. <code>/auth/isSignedIn</code>)</td>
+    </tr>
+    <tr>
+      <td><code>evaluateLogicExpression</code></td>
+      <td>Use <code>evaluateVisibility</code></td>
+    </tr>
+    <tr>
+      <td><code>createRendererFromCatalog</code></td>
+      <td>Use <code>defineRegistry</code></td>
+    </tr>
+    <tr>
+      <td><code>traverseTree</code> (codegen)</td>
+      <td>Use <code>traverseSpec</code></td>
+    </tr>
+  </tbody>
+</table>

apps/web/app/(main)/docs/page.mdx

@@ -91,7 +91,7 @@ The result is a native UI built from your own components — not an iframe, not
 - **[Streaming](/docs/streaming)** — Render progressively as the AI responds. Each JSONL patch adds to the spec and the UI updates in real time.
 - **[Data Binding](/docs/data-binding)** — Bind props to runtime data with `$state` paths, repeat elements over arrays, and wire two-way input bindings.
 - **[Visibility](/docs/visibility)** — Show or hide elements based on state conditions. The AI can generate conditional UIs without writing logic.
-- **[Generation Modes](/docs/generation-modes)** — Generate standalone UI (playground/builder) or inline UI within a chat conversation.
+- **[Generation Modes](/docs/generation-modes)** — Standalone mode for full-page generated UI or inline mode for UI embedded in a conversation.
 
 ## Next
 

apps/web/app/(main)/docs/registry/page.mdx

@@ -9,6 +9,7 @@ What a registry contains depends on the schema you use. Each package defines its
 
 - **`@json-render/react`** — Components (React elements) and action handlers
 - **`@json-render/react-native`** — Components (React Native elements) and action handlers
+- **`@json-render/react-email`** — Email components (React Email / HTML)
 - **`@json-render/remotion`** — Clip components, transitions, and effects
 
 ## @json-render/react
@@ -278,6 +279,31 @@ export const { registry } = defineRegistry(catalog, {
 
 See the [@json-render/react-native API reference](/docs/api/react-native) for the full API.
 
+## @json-render/react-email
+
+`@json-render/react-email` uses `defineRegistry` like React and React Native. Components render to React Email primitives (`@react-email/components`). Use `renderToHtml` or `renderToPlainText` for server-side email output:
+
+```tsx
+import { defineRegistry } from '@json-render/react-email';
+import { renderToHtml } from '@json-render/react-email';
+import { Body, Container, Heading, Text } from '@react-email/components';
+
+export const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: ({ props, children }) => (
+      <Container style={{ padding: 16, backgroundColor: '#fff' }}>
+        <Heading>{props.title}</Heading>
+        {children}
+      </Container>
+    ),
+  },
+});
+
+const html = await renderToHtml(spec, { registry });
+```
+
+See the [@json-render/react-email API reference](/docs/api/react-email) for the full API.
+
 ## @json-render/remotion
 
 `@json-render/remotion` takes a different approach. Instead of `defineRegistry`, it uses a plain component registry with built-in standard components for video production:

apps/web/app/(main)/docs/renderers/page.mdx

@@ -0,0 +1,299 @@
+import { pageMetadata } from "@/lib/page-metadata";
+export const metadata = pageMetadata("docs/renderers");
+
+# Renderers
+
+json-render supports multiple output targets. Each renderer takes the same core concept -- a JSON spec constrained to a catalog -- and renders it natively on a different platform or into a different format.
+
+All renderers share the same workflow:
+
+1. Define a catalog with `defineCatalog`
+2. AI generates a JSON spec
+3. The renderer turns the spec into platform-native output
+
+<table>
+  <thead>
+    <tr>
+      <th>Renderer</th>
+      <th>Package</th>
+      <th>Output</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>React</td>
+      <td>
+        <code>@json-render/react</code>
+      </td>
+      <td>React component tree</td>
+    </tr>
+    <tr>
+      <td>Vue</td>
+      <td>
+        <code>@json-render/vue</code>
+      </td>
+      <td>Vue 3 component tree</td>
+    </tr>
+    <tr>
+      <td>Svelte</td>
+      <td>
+        <code>@json-render/svelte</code>
+      </td>
+      <td>Svelte 5 component tree</td>
+    </tr>
+    <tr>
+      <td>Solid</td>
+      <td>
+        <code>@json-render/solid</code>
+      </td>
+      <td>SolidJS component tree</td>
+    </tr>
+    <tr>
+      <td>shadcn/ui</td>
+      <td>
+        <code>@json-render/shadcn</code>
+      </td>
+      <td>Pre-built Radix UI + Tailwind components (uses React renderer)</td>
+    </tr>
+    <tr>
+      <td>React Native</td>
+      <td>
+        <code>@json-render/react-native</code>
+      </td>
+      <td>Native mobile views</td>
+    </tr>
+    <tr>
+      <td>Image</td>
+      <td>
+        <code>@json-render/image</code>
+      </td>
+      <td>SVG / PNG (via Satori)</td>
+    </tr>
+    <tr>
+      <td>React PDF</td>
+      <td>
+        <code>@json-render/react-pdf</code>
+      </td>
+      <td>PDF documents</td>
+    </tr>
+    <tr>
+      <td>Remotion</td>
+      <td>
+        <code>@json-render/remotion</code>
+      </td>
+      <td>Video compositions</td>
+    </tr>
+    <tr>
+      <td>Ink</td>
+      <td>
+        <code>@json-render/ink</code>
+      </td>
+      <td>Terminal UI (via Ink)</td>
+    </tr>
+  </tbody>
+</table>
+
+## React
+
+Render specs as React component trees in the browser. Supports data binding, streaming, actions, validation, visibility, and computed values.
+
+```tsx
+import { defineRegistry, Renderer } from "@json-render/react";
+import { schema } from "@json-render/react/schema";
+
+const { registry } = defineRegistry(catalog, { components });
+<Renderer spec={spec} registry={registry} />;
+```
+
+Use `StateProvider`, `VisibilityProvider`, and `ActionProvider` for full interactivity. See the [@json-render/react API reference](/docs/api/react) for details.
+
+## Vue
+
+Vue 3 renderer with full feature parity with React: data binding, visibility, actions, validation, repeat scopes, and streaming.
+
+```typescript
+import { defineRegistry, Renderer } from "@json-render/vue";
+import { schema } from "@json-render/vue/schema";
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: ({ props, children }) =>
+      h("div", { class: "card" }, [h("h3", null, props.title), children]),
+  },
+});
+```
+
+Uses composables (`useStateStore`, `useStateBinding`, `useActions`, etc.) instead of React hooks. See the [@json-render/vue API reference](/docs/api/vue) for details.
+
+## Svelte
+
+Svelte 5 renderer with runes-compatible context helpers, visibility conditions, actions, and streaming support.
+
+```typescript
+import { defineRegistry, Renderer } from "@json-render/svelte";
+import { schema } from "@json-render/svelte/schema";
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: ({ props, children }) => /* Svelte snippet */,
+  },
+});
+```
+
+See the [@json-render/svelte API reference](/docs/api/svelte) for details.
+
+## Solid
+
+SolidJS renderer with fine-grained reactivity, state bindings, validation, visibility, and event-driven actions.
+
+```tsx
+import { defineRegistry, Renderer } from "@json-render/solid";
+import { schema } from "@json-render/solid/schema";
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: (renderProps) => <div>{renderProps.children}</div>,
+  },
+});
+
+<Renderer spec={spec} registry={registry} />;
+```
+
+See the [@json-render/solid API reference](/docs/api/solid) for details.
+
+## shadcn/ui
+
+36 pre-built components using Radix UI and Tailwind CSS. Built on top of `@json-render/react` -- no custom renderer needed.
+
+```tsx
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/react/schema";
+import { defineRegistry, Renderer } from "@json-render/react";
+import { shadcnComponentDefinitions } from "@json-render/shadcn/catalog";
+import { shadcnComponents } from "@json-render/shadcn";
+
+const catalog = defineCatalog(schema, {
+  components: {
+    Card: shadcnComponentDefinitions.Card,
+    Button: shadcnComponentDefinitions.Button,
+  },
+});
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: shadcnComponents.Card,
+    Button: shadcnComponents.Button,
+  },
+});
+```
+
+See the [@json-render/shadcn API reference](/docs/api/shadcn) for the full component list.
+
+## React Native
+
+Render specs as native mobile views. Includes 25+ standard components and standard action definitions.
+
+```tsx
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/react-native/schema";
+import {
+  standardComponentDefinitions,
+  standardActionDefinitions,
+} from "@json-render/react-native/catalog";
+import { defineRegistry, Renderer } from "@json-render/react-native";
+
+const catalog = defineCatalog(schema, {
+  components: { ...standardComponentDefinitions },
+  actions: standardActionDefinitions,
+});
+
+const { registry } = defineRegistry(catalog, { components: {} });
+<Renderer spec={spec} registry={registry} />;
+```
+
+See the [@json-render/react-native API reference](/docs/api/react-native) for details.
+
+## Image
+
+Generate SVG and PNG images from JSON specs using Satori. Ideal for OG images, social cards, and banners.
+
+```typescript
+import { renderToSvg, renderToPng } from "@json-render/image/render";
+
+const svg = await renderToSvg(spec, { fonts });
+const png = await renderToPng(spec, { fonts });
+```
+
+Nine standard components: Frame, Box, Row, Column, Heading, Text, Image, Divider, Spacer. PNG output requires `@resvg/resvg-js` as an optional peer dependency.
+
+See the [@json-render/image API reference](/docs/api/image) for details.
+
+## React PDF
+
+Generate PDF documents from JSON specs using `@react-pdf/renderer`. Render to buffer, stream, or file.
+
+```typescript
+import {
+  renderToBuffer,
+  renderToStream,
+  renderToFile,
+} from "@json-render/react-pdf";
+
+const buffer = await renderToBuffer(spec);
+const stream = await renderToStream(spec);
+await renderToFile(spec, "./output.pdf");
+```
+
+Standard components include Document, Page, View, Row, Column, Heading, Text, Image, Table, List, Divider, Spacer, Link, and PageNumber.
+
+See the [@json-render/react-pdf API reference](/docs/api/react-pdf) for details.
+
+## Remotion
+
+Turn JSON timeline specs into video compositions with Remotion.
+
+```tsx
+import { Player } from "@remotion/player";
+import { Renderer } from "@json-render/remotion";
+
+<Player
+  component={Renderer}
+  inputProps={{ spec }}
+  durationInFrames={spec.composition.durationInFrames}
+  fps={spec.composition.fps}
+  compositionWidth={spec.composition.width}
+  compositionHeight={spec.composition.height}
+/>;
+```
+
+Uses a timeline spec format with compositions, tracks, and clips. Includes standard components (TitleCard, TypingText, ImageSlide, etc.), transitions (fade, slide, zoom, wipe), and effects.
+
+See the [@json-render/remotion API reference](/docs/api/remotion) for details.
+
+## Ink (Terminal)
+
+Render specs as terminal UIs using [Ink](https://github.com/vadimdemedes/ink). Multiple standard components including tables, progress bars, spinners, tabs, multi-select, and interactive inputs with Tab-cycling focus.
+
+```tsx
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/ink/schema";
+import {
+  standardComponentDefinitions,
+  standardActionDefinitions,
+} from "@json-render/ink/catalog";
+import { defineRegistry, Renderer } from "@json-render/ink";
+
+const catalog = defineCatalog(schema, {
+  components: { ...standardComponentDefinitions },
+  actions: standardActionDefinitions,
+});
+
+const { registry } = defineRegistry(catalog, { components: {} });
+<Renderer spec={spec} registry={registry} />;
+```
+
+See the [@json-render/ink API reference](/docs/api/ink) for details.
+
+## Custom Renderers
+
+You can build your own renderer for any output target. See the [Custom Schema & Renderer](/docs/custom-schema) guide for how to define a custom schema and wire it to your own rendering logic.

apps/web/app/(main)/docs/skills/page.mdx

@@ -0,0 +1,123 @@
+import { pageMetadata } from "@/lib/page-metadata";
+
+export const metadata = pageMetadata("docs/skills");
+
+# Skills
+
+json-render ships with skills that teach AI coding agents how to use each package. Install a skill and your agent in Cursor, Claude Code, or Codex can generate json-render UIs without manual guidance.
+
+## Available Skills
+
+- **core** — Core schemas, catalogs, and AI prompt generation.
+- **react** — React renderer that turns JSON specs into React component trees.
+- **react-pdf** — PDF renderer using `@react-pdf/renderer`.
+- **react-email** — Email renderer that produces HTML or plain-text emails.
+- **react-native** — React Native renderer for native mobile UIs.
+- **shadcn** — Pre-built shadcn/ui components (Radix UI + Tailwind).
+- **image** — Image renderer that turns JSON specs into SVG and PNG via Satori.
+- **remotion** — Remotion renderer for video generation from JSON timeline specs.
+- **vue** — Vue 3 renderer for Vue component trees.
+- **svelte** — Svelte 5 renderer for Svelte component trees.
+- **solid** — SolidJS renderer for fine-grained reactive component trees.
+- **codegen** — Code generation utilities for building custom exporters.
+- **mcp** — MCP Apps integration for Claude, ChatGPT, Cursor, and VS Code.
+- **redux** — Redux adapter for json-render's `StateStore` interface.
+- **zustand** — Zustand adapter for json-render's `StateStore` interface.
+- **jotai** — Jotai adapter for json-render's `StateStore` interface.
+- **xstate** — XState Store adapter for json-render's `StateStore` interface.
+
+## Installation
+
+```bash
+npx skills add vercel-labs/json-render --skill core
+npx skills add vercel-labs/json-render --skill react
+npx skills add vercel-labs/json-render --skill react-pdf
+npx skills add vercel-labs/json-render --skill react-email
+npx skills add vercel-labs/json-render --skill react-native
+npx skills add vercel-labs/json-render --skill shadcn
+npx skills add vercel-labs/json-render --skill image
+npx skills add vercel-labs/json-render --skill remotion
+npx skills add vercel-labs/json-render --skill vue
+npx skills add vercel-labs/json-render --skill svelte
+npx skills add vercel-labs/json-render --skill solid
+npx skills add vercel-labs/json-render --skill codegen
+npx skills add vercel-labs/json-render --skill mcp
+npx skills add vercel-labs/json-render --skill redux
+npx skills add vercel-labs/json-render --skill zustand
+npx skills add vercel-labs/json-render --skill jotai
+npx skills add vercel-labs/json-render --skill xstate
+```
+
+After installing, your AI agent will automatically activate the right skill when it encounters a matching request.
+
+## core
+
+The foundational skill. Teaches agents how to define catalogs, create schemas, build specs, and generate AI prompts. This is the starting point for any json-render project and covers `defineCatalog`, `defineSchema`, `specSchema`, `toPrompt`, and the full spec format.
+
+## react
+
+Teaches agents how to render JSON specs as React component trees using `JsonRender`, `JsonRenderClient`, and `useJsonRender`. Covers custom component registries, client-side interactivity, state management, and streaming integration.
+
+## react-pdf
+
+Teaches agents how to generate PDFs from JSON specs using `@react-pdf/renderer`. Covers the PDF-specific component registry, page layout, and styling.
+
+## react-email
+
+Teaches agents how to render JSON specs as HTML or plain-text emails using React Email components. Covers the email-specific registry and rendering pipeline.
+
+## react-native
+
+Teaches agents how to render JSON specs as native mobile UIs with React Native. Covers the native component registry and platform-specific considerations.
+
+## shadcn
+
+Teaches agents how to use the pre-built shadcn/ui component registry with json-render. Includes Radix UI primitives, Tailwind styling, and the full set of available shadcn components.
+
+## image
+
+Teaches agents how to turn JSON specs into SVG and PNG images using Satori. Covers the image-specific registry, dimensions, fonts, and rendering options.
+
+## remotion
+
+Teaches agents how to generate videos from JSON timeline specs using Remotion. Covers compositions, sequences, timeline structure, and video rendering.
+
+## vue
+
+Teaches agents how to render JSON specs as Vue 3 component trees. Covers the Vue renderer API, custom component registries, and reactivity integration.
+
+## svelte
+
+Teaches agents how to render JSON specs as Svelte 5 component trees. Covers the Svelte renderer API and component registration.
+
+## solid
+
+Teaches agents how to render JSON specs as SolidJS component trees. Covers Solid-specific reactive patterns, provider wiring, bindings, actions, and streaming.
+
+## codegen
+
+Teaches agents how to use code generation utilities to export UI specs as framework-specific source code. Covers the codegen pipeline and custom exporter creation.
+
+## mcp
+
+Teaches agents how to build MCP Apps that serve json-render UIs inside AI tools like Claude, ChatGPT, Cursor, and VS Code. Covers MCP server setup, tool definitions, and UI streaming.
+
+## redux
+
+Teaches agents how to connect a Redux store to json-render's `StateStore` interface for state-driven UIs.
+
+## zustand
+
+Teaches agents how to connect a Zustand store to json-render's `StateStore` interface for lightweight state management.
+
+## jotai
+
+Teaches agents how to connect Jotai atoms to json-render's `StateStore` interface for atomic state management.
+
+## xstate
+
+Teaches agents how to connect an XState Store to json-render's `StateStore` interface for state-machine-driven UIs.
+
+## Source
+
+All skill files are in the [`skills/`](https://github.com/vercel-labs/json-render/tree/main/skills) directory of the repository.

apps/web/app/(main)/docs/watchers/page.mdx

@@ -136,10 +136,27 @@ An element can watch multiple state paths. Each path maps to one or more action
 
 ## When to Use `watch` vs `on`
 
-| Mechanism | Trigger | Use Case |
-|-----------|---------|----------|
-| `on` | User interaction (press, change, blur) | Button clicks, input changes, form submissions |
-| `watch` | State value change (any source) | Cascading data, derived state, cross-field sync |
+<table>
+<thead>
+<tr>
+<th>Mechanism</th>
+<th>Trigger</th>
+<th>Use Case</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>on</code></td>
+<td>User interaction (press, change, blur)</td>
+<td>Button clicks, input changes, form submissions</td>
+</tr>
+<tr>
+<td><code>watch</code></td>
+<td>State value change (any source)</td>
+<td>Cascading data, derived state, cross-field sync</td>
+</tr>
+</tbody>
+</table>
 
 Use `on` when reacting to direct user actions. Use `watch` when a state change (from any source — user input, action handler, or external store update) should trigger side effects.
 

apps/web/app/(main)/examples/page.tsx

@@ -0,0 +1,133 @@
+"use client";
+
+import { useState } from "react";
+import { Badge } from "@/components/ui/badge";
+import { examples, allTags, getGitHubUrl, type Example } from "@/lib/examples";
+import { cn } from "@/lib/utils";
+
+function ExampleCard({ example }: { example: Example }) {
+  return (
+    <div className="group flex flex-col rounded-xl border border-border bg-card text-card-foreground overflow-hidden transition-colors hover:border-foreground/25">
+      <div className="flex flex-1 flex-col gap-3 p-5">
+        <h3 className="font-semibold leading-none">{example.title}</h3>
+
+        <p className="text-sm text-muted-foreground leading-relaxed">
+          {example.description}
+        </p>
+
+        <div className="flex flex-wrap gap-1.5">
+          {example.tags.map((tag) => (
+            <Badge key={tag} variant="secondary" className="text-[11px]">
+              {tag}
+            </Badge>
+          ))}
+        </div>
+
+        <div className="mt-auto flex items-center gap-3 pt-2">
+          {example.demoUrl && (
+            <a
+              href={example.demoUrl}
+              target="_blank"
+              rel="noopener noreferrer"
+              className="inline-flex items-center gap-1.5 text-sm text-foreground hover:text-primary transition-colors"
+            >
+              <svg
+                xmlns="http://www.w3.org/2000/svg"
+                width="14"
+                height="14"
+                viewBox="0 0 24 24"
+                fill="none"
+                stroke="currentColor"
+                strokeWidth="2"
+                strokeLinecap="round"
+                strokeLinejoin="round"
+              >
+                <path d="M15 3h6v6" />
+                <path d="M10 14 21 3" />
+                <path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6" />
+              </svg>
+              Live Demo
+            </a>
+          )}
+          <a
+            href={getGitHubUrl(example)}
+            target="_blank"
+            rel="noopener noreferrer"
+            className="inline-flex items-center gap-1.5 text-sm text-muted-foreground hover:text-foreground transition-colors"
+          >
+            <svg
+              viewBox="0 0 16 16"
+              className="h-3.5 w-3.5"
+              fill="currentColor"
+              aria-hidden="true"
+            >
+              <path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0016 8c0-4.42-3.58-8-8-8z" />
+            </svg>
+            Source
+          </a>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export default function ExamplesPage() {
+  const [activeTag, setActiveTag] = useState<string | null>(null);
+
+  const filtered = activeTag
+    ? examples.filter((e) => e.tags.includes(activeTag))
+    : examples;
+
+  return (
+    <section className="mx-auto max-w-6xl px-6 py-16">
+      <div className="mb-10">
+        <h1 className="text-3xl font-bold tracking-tight sm:text-4xl">
+          Examples
+        </h1>
+        <p className="mt-3 text-lg text-muted-foreground">
+          Explore json-render across frameworks, renderers, and use cases.
+        </p>
+      </div>
+
+      <div className="mb-8 flex flex-wrap gap-2">
+        <button
+          onClick={() => setActiveTag(null)}
+          className={cn(
+            "rounded-full border px-3 py-1 text-xs font-medium transition-colors",
+            activeTag === null
+              ? "border-foreground bg-foreground text-background"
+              : "border-border text-muted-foreground hover:text-foreground hover:border-foreground/50",
+          )}
+        >
+          All
+        </button>
+        {allTags.map((tag) => (
+          <button
+            key={tag}
+            onClick={() => setActiveTag(activeTag === tag ? null : tag)}
+            className={cn(
+              "rounded-full border px-3 py-1 text-xs font-medium transition-colors",
+              activeTag === tag
+                ? "border-foreground bg-foreground text-background"
+                : "border-border text-muted-foreground hover:text-foreground hover:border-foreground/50",
+            )}
+          >
+            {tag}
+          </button>
+        ))}
+      </div>
+
+      <div className="grid gap-6 sm:grid-cols-2 lg:grid-cols-3">
+        {filtered.map((example) => (
+          <ExampleCard key={example.slug} example={example} />
+        ))}
+      </div>
+
+      {filtered.length === 0 && (
+        <p className="py-12 text-center text-muted-foreground">
+          No examples match the selected filter.
+        </p>
+      )}
+    </section>
+  );
+}

apps/web/app/(main)/layout.tsx

@@ -1,13 +1,16 @@
 import { Header } from "@/components/header";
+import { getStarCount } from "@/lib/github";
 
-export default function MainLayout({
+export default async function MainLayout({
   children,
 }: {
   children: React.ReactNode;
 }) {
+  const stars = await getStarCount();
+
   return (
     <div className="min-h-screen flex flex-col">
-      <Header />
+      <Header stars={stars} />
       <main className="flex-1">{children}</main>
     </div>
   );

apps/web/app/api/docs-chat/route.ts

@@ -16,7 +16,8 @@ const SYSTEM_PROMPT = `You are a helpful documentation assistant for json-render
 
 GitHub repository: https://github.com/vercel-labs/json-render
 Documentation: https://json-render.dev/docs
-npm packages: @json-render/core, @json-render/react, @json-render/remotion, @json-render/codegen
+npm packages: @json-render/core, @json-render/react, @json-render/next, @json-render/ink, @json-render/vue, @json-render/svelte, @json-render/solid, @json-render/shadcn, @json-render/shadcn-svelte, @json-render/react-three-fiber, @json-render/react-native, @json-render/react-email, @json-render/react-pdf, @json-render/image, @json-render/remotion, @json-render/directives, @json-render/codegen, @json-render/devtools, @json-render/devtools-react, @json-render/devtools-vue, @json-render/devtools-svelte, @json-render/devtools-solid, @json-render/mcp, @json-render/redux, @json-render/zustand, @json-render/jotai, @json-render/xstate, @json-render/yaml
+Skills: json-render ships AI agent skills that teach coding agents how to use each package. Install with "npx skills add vercel-labs/json-render --skill <name>". Available skills: core, react, next, ink, react-pdf, react-email, react-native, shadcn, shadcn-svelte, react-three-fiber, image, remotion, vue, svelte, solid, directives, codegen, devtools, mcp, redux, zustand, jotai, xstate, yaml. See /docs/skills for details.
 
 You have access to the full json-render documentation via the bash and readFile tools. The docs are available as markdown files in the /workspace/docs/ directory.
 

apps/web/app/api/generate/route.ts

@@ -1,32 +1,76 @@
 import { streamText } from "ai";
 import { headers } from "next/headers";
-import { buildUserPrompt } from "@json-render/core";
+import type { Spec, EditMode } from "@json-render/core";
+import {
+  buildUserPrompt,
+  buildEditUserPrompt,
+  isNonEmptySpec,
+} from "@json-render/core";
+import { yamlPrompt } from "@json-render/yaml";
+import { stringify as yamlStringify } from "yaml";
 import { minuteRateLimit, dailyRateLimit } from "@/lib/rate-limit";
 import { playgroundCatalog } from "@/lib/render/catalog";
 
 export const maxDuration = 30;
 
-const SYSTEM_PROMPT = playgroundCatalog.prompt({
-  customRules: [
-    "NEVER use viewport height classes (min-h-screen, h-screen) - the UI renders inside a fixed-size container.",
-    "NEVER use page background colors (bg-gray-50) - the container has its own background.",
-    "For forms or small UIs: use Card as root with maxWidth:'sm' or 'md' and centered:true.",
-    "For content-heavy UIs (blogs, dashboards, product listings): use Stack or Grid as root. Use Grid with 2-3 columns for card layouts.",
-    "Wrap each repeated item in a Card for visual separation and structure.",
-    "Use realistic, professional sample data. Include 3-5 items with varied content. Never leave state arrays empty.",
-    'For form inputs (Input, Textarea, Select), always include checks for validation (e.g. required, email, minLength). Always pair checks with a $bindState expression on the value prop (e.g. { "$bindState": "/path" }).',
-  ],
-});
+const PLAYGROUND_RULES = [
+  "NEVER use viewport height classes (min-h-screen, h-screen) - the UI renders inside a fixed-size container.",
+  "NEVER use page background colors (bg-gray-50) - the container has its own background.",
+  "For forms or small UIs: use Card as root with maxWidth:'sm' or 'md' and centered:true.",
+  "For content-heavy UIs (blogs, dashboards, product listings): use Stack or Grid as root. Use Grid with 2-3 columns for card layouts. Keep the total UI compact — avoid sprawling multi-section pages. Prefer a single focused Card over a full page layout.",
+  "Wrap each repeated item in a Card for visual separation and structure.",
+  "Use realistic, professional sample data. Include 3-5 items with varied content. Never leave state arrays empty.",
+  'For form inputs (Input, Textarea, Select), always include checks for validation (e.g. required, email, minLength). Always pair checks with a $bindState expression on the value prop (e.g. { "$bindState": "/path" }).',
+  "NEVER use emoji characters. Use the Icon component with Lucide icon names instead. For example, use Icon with name:'MapPin' instead of a pin emoji, Icon with name:'Mail' instead of an envelope emoji, etc.",
+  "For icon+label patterns, use a horizontal Stack with gap:'sm' and align:'center' containing an Icon and a Text.",
+  "For any tabular or list data with consistent columns (items, orders, stats), ALWAYS use the Table component. Never simulate tables with Stacks — the columns won't align.",
+];
 
 const MAX_PROMPT_LENGTH = 500;
 const DEFAULT_MODEL = "anthropic/claude-haiku-4.5";
 
+function getSystemPrompt(isYaml: boolean, editModes?: EditMode[]): string {
+  if (isYaml) {
+    return yamlPrompt(playgroundCatalog, {
+      mode: "standalone",
+      customRules: PLAYGROUND_RULES,
+      editModes: editModes ?? ["merge"],
+    });
+  }
+  return playgroundCatalog.prompt({
+    customRules: PLAYGROUND_RULES,
+    editModes,
+  });
+}
+
+function buildYamlUserPrompt(
+  prompt: string,
+  previousSpec?: Spec | null,
+  editModes?: EditMode[],
+): string {
+  if (isNonEmptySpec(previousSpec)) {
+    return buildEditUserPrompt({
+      prompt,
+      currentSpec: previousSpec,
+      config: { modes: editModes ?? ["merge"] },
+      format: "yaml",
+      maxPromptLength: MAX_PROMPT_LENGTH,
+      serializer: (s) => yamlStringify(s, { indent: 2 }).trimEnd(),
+    });
+  }
+
+  const userText = prompt.slice(0, MAX_PROMPT_LENGTH);
+  return [
+    userText,
+    "",
+    "Output the full spec in a ```yaml-spec fence. Stream progressively — output elements one at a time.",
+  ].join("\n");
+}
+
 export async function POST(req: Request) {
-  // Get client IP for rate limiting
   const headersList = await headers();
   const ip = headersList.get("x-forwarded-for")?.split(",")[0] ?? "anonymous";
 
-  // Check rate limits (minute and daily)
   const [minuteResult, dailyResult] = await Promise.all([
     minuteRateLimit.limit(ip),
     dailyRateLimit.limit(ip),
@@ -48,22 +92,34 @@ export async function POST(req: Request) {
     );
   }
 
-  const { prompt, context } = await req.json();
+  const { prompt, context, format, editModes } = await req.json();
+  const isYaml = format === "yaml";
 
-  const userPrompt = buildUserPrompt({
-    prompt,
-    currentSpec: context?.previousSpec,
-    maxPromptLength: MAX_PROMPT_LENGTH,
-  });
+  const systemPrompt = getSystemPrompt(isYaml, editModes);
+  const userPrompt = isYaml
+    ? buildYamlUserPrompt(prompt, context?.previousSpec, editModes)
+    : buildUserPrompt({
+        prompt,
+        currentSpec: context?.previousSpec,
+        maxPromptLength: MAX_PROMPT_LENGTH,
+        editModes,
+      });
 
   const result = streamText({
     model: process.env.AI_GATEWAY_MODEL || DEFAULT_MODEL,
-    system: SYSTEM_PROMPT,
+    system: [
+      {
+        role: "system",
+        content: systemPrompt,
+        providerOptions: {
+          anthropic: { cacheControl: { type: "ephemeral" } },
+        },
+      },
+    ],
     prompt: userPrompt,
     temperature: 0.7,
   });
 
-  // Stream the text, then append token usage metadata at the end
   const encoder = new TextEncoder();
   const textStream = result.textStream;
 
@@ -72,7 +128,6 @@ export async function POST(req: Request) {
       for await (const chunk of textStream) {
         controller.enqueue(encoder.encode(chunk));
       }
-      // Append usage metadata after stream completes
       try {
         const usage = await result.usage;
         const meta = JSON.stringify({
@@ -80,10 +135,12 @@ export async function POST(req: Request) {
           promptTokens: usage.inputTokens,
           completionTokens: usage.outputTokens,
           totalTokens: usage.totalTokens,
+          cachedTokens: usage.inputTokenDetails?.cacheReadTokens ?? 0,
+          cacheWriteTokens: usage.inputTokenDetails?.cacheWriteTokens ?? 0,
         });
         controller.enqueue(encoder.encode(`\n${meta}\n`));
       } catch {
-        // Usage not available — skip silently
+        // Usage not available
       }
       controller.close();
     },

apps/web/app/api/search/route.ts

@@ -0,0 +1,74 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getSearchIndex } from "@/lib/search-index";
+
+export async function GET(req: NextRequest) {
+  const q = req.nextUrl.searchParams.get("q")?.trim().toLowerCase();
+
+  if (!q) {
+    return NextResponse.json({ results: [] });
+  }
+
+  const index = await getSearchIndex();
+  const terms = q.split(/\s+/).filter(Boolean);
+
+  const results = index
+    .map((entry) => {
+      const titleLower = entry.title.toLowerCase();
+      const contentLower = entry.content.toLowerCase();
+
+      const titleMatch = terms.every((t) => titleLower.includes(t));
+      const contentMatch = terms.every((t) => contentLower.includes(t));
+
+      if (!titleMatch && !contentMatch) return null;
+
+      let snippet = "";
+      if (contentMatch) {
+        const firstTermIdx = Math.min(
+          ...terms.map((t) => {
+            const idx = contentLower.indexOf(t);
+            return idx === -1 ? Infinity : idx;
+          }),
+        );
+        if (firstTermIdx !== Infinity) {
+          const start = Math.max(0, firstTermIdx - 40);
+          const end = Math.min(entry.content.length, firstTermIdx + 120);
+          snippet =
+            (start > 0 ? "..." : "") +
+            entry.content.slice(start, end).replace(/\n/g, " ") +
+            (end < entry.content.length ? "..." : "");
+        }
+      }
+
+      return {
+        title: entry.title,
+        href: entry.href,
+        section: entry.section,
+        snippet,
+        score: titleMatch ? 2 : 1,
+      };
+    })
+    .filter(
+      (
+        r,
+      ): r is {
+        title: string;
+        href: string;
+        section: string;
+        snippet: string;
+        score: number;
+      } => r !== null,
+    )
+    .sort((a, b) => b.score - a.score)
+    .slice(0, 20)
+    .map(({ title, href, section, snippet }) => ({
+      title,
+      href,
+      section,
+      snippet,
+    }));
+
+  return NextResponse.json(
+    { results },
+    { headers: { "Cache-Control": "public, max-age=60" } },
+  );
+}

apps/web/components/code-block.tsx

@@ -145,7 +145,7 @@ function getHighlighter() {
   if (!highlighterPromise) {
     highlighterPromise = createHighlighter({
       themes: [vercelLightTheme, vercelDarkTheme],
-      langs: ["json", "tsx", "typescript"],
+      langs: ["json", "tsx", "typescript", "yaml"],
     });
   }
   return highlighterPromise;
@@ -158,7 +158,7 @@ if (typeof window !== "undefined") {
 
 interface CodeBlockProps {
   code: string;
-  lang: "json" | "tsx" | "typescript";
+  lang: "json" | "tsx" | "typescript" | "yaml";
   fillHeight?: boolean;
   hideCopyButton?: boolean;
 }

apps/web/components/demo.tsx

@@ -18,65 +18,62 @@ import { PlaygroundRenderer } from "@/lib/render/renderer";
 import { playgroundCatalog } from "@/lib/render/catalog";
 import { buildCatalogDisplayData } from "@/lib/render/catalog-display";
 
-const SIMULATION_PROMPT = "Create a contact form with name, email, and message";
+const SIMULATION_PROMPT = "Show a team performance dashboard";
 
 interface SimulationStage {
   tree: Spec;
   stream: string;
 }
 
-// Shared state & element definitions for the progressive simulation stages.
-const FORM_STATE = { form: { name: "", email: "", message: "" } };
+const DASH_STATE = {
+  chartData: [
+    { label: "Mon", value: 12 },
+    { label: "Tue", value: 28 },
+    { label: "Wed", value: 19 },
+    { label: "Thu", value: 34 },
+    { label: "Fri", value: 45 },
+    { label: "Sat", value: 38 },
+    { label: "Sun", value: 52 },
+  ],
+};
 
-const NAME_INPUT = {
-  type: "Input",
+const METRIC_REVENUE = {
+  type: "Metric",
   props: {
-    label: "Name",
-    name: "name",
-    statePath: "/form/name",
-    checks: [{ type: "required", message: "Name is required" }],
+    label: "Weekly Revenue",
+    value: "12,400",
+    prefix: "$",
+    change: "+18%",
+    changeType: "positive",
   },
 } as const;
 
-const EMAIL_INPUT = {
-  type: "Input",
-  props: {
-    label: "Email",
-    name: "email",
-    type: "email",
-    statePath: "/form/email",
-    checks: [
-      { type: "required", message: "Email is required" },
-      { type: "email", message: "Please enter a valid email" },
-    ],
-  },
+const CHART = {
+  type: "LineGraph",
+  props: { data: { $state: "/chartData" } },
 } as const;
 
-const MESSAGE_INPUT = {
-  type: "Textarea",
-  props: {
-    label: "Message",
-    name: "message",
-    statePath: "/form/message",
-    checks: [{ type: "required", message: "Message is required" }],
-  },
+const SEP = { type: "Separator", props: {} } as const;
+
+const PROGRESS_DEALS = {
+  type: "Progress",
+  props: { value: 72, label: "Deals Closed -- 72%" },
 } as const;
 
-const SUBMIT_BUTTON = {
-  type: "Button",
-  props: { label: "Send Message", variant: "primary" },
-  on: { press: { action: "formSubmit" } },
+const PROGRESS_RETENTION = {
+  type: "Progress",
+  props: { value: 91, label: "Retention -- 91%" },
 } as const;
 
 const SIMULATION_STAGES: SimulationStage[] = [
   {
     tree: {
       root: "card",
-      state: FORM_STATE,
+      state: DASH_STATE,
       elements: {
         card: {
           type: "Card",
-          props: { title: "Contact Us", maxWidth: "md" },
+          props: { title: "Team Performance", maxWidth: "sm", centered: true },
           children: [],
         },
       },
@@ -86,72 +83,74 @@ const SIMULATION_STAGES: SimulationStage[] = [
   {
     tree: {
       root: "card",
-      state: FORM_STATE,
+      state: DASH_STATE,
       elements: {
         card: {
           type: "Card",
-          props: { title: "Contact Us", maxWidth: "md" },
-          children: ["name"],
+          props: { title: "Team Performance", maxWidth: "sm", centered: true },
+          children: ["m1"],
         },
-        name: NAME_INPUT,
+        m1: METRIC_REVENUE,
       },
     },
     stream:
-      '{"op":"add","path":"/elements/name","value":{"type":"Input","props":{"label":"Name","name":"name","statePath":"/form/name","checks":[{"type":"required","message":"Name is required"}]}}}',
+      '{"op":"add","path":"/elements/m1","value":{"type":"Metric","props":{"label":"Weekly Revenue","value":"12,400","prefix":"$","change":"+18%","changeType":"positive"}}}',
   },
   {
     tree: {
       root: "card",
-      state: FORM_STATE,
+      state: DASH_STATE,
       elements: {
         card: {
           type: "Card",
-          props: { title: "Contact Us", maxWidth: "md" },
-          children: ["name", "email"],
+          props: { title: "Team Performance", maxWidth: "sm", centered: true },
+          children: ["m1", "chart"],
         },
-        name: NAME_INPUT,
-        email: EMAIL_INPUT,
+        m1: METRIC_REVENUE,
+        chart: CHART,
       },
     },
     stream:
-      '{"op":"add","path":"/elements/email","value":{"type":"Input","props":{"label":"Email","name":"email","type":"email","statePath":"/form/email","checks":[{"type":"required","message":"Email is required"},{"type":"email","message":"Please enter a valid email"}]}}}',
+      '{"op":"add","path":"/elements/chart","value":{"type":"LineGraph","props":{"data":{"$state":"/chartData"}}}}',
   },
   {
     tree: {
       root: "card",
-      state: FORM_STATE,
+      state: DASH_STATE,
       elements: {
         card: {
           type: "Card",
-          props: { title: "Contact Us", maxWidth: "md" },
-          children: ["name", "email", "message"],
+          props: { title: "Team Performance", maxWidth: "sm", centered: true },
+          children: ["m1", "chart", "sep", "p1"],
         },
-        name: NAME_INPUT,
-        email: EMAIL_INPUT,
-        message: MESSAGE_INPUT,
+        m1: METRIC_REVENUE,
+        chart: CHART,
+        sep: SEP,
+        p1: PROGRESS_DEALS,
       },
     },
     stream:
-      '{"op":"add","path":"/elements/message","value":{"type":"Textarea","props":{"label":"Message","name":"message","statePath":"/form/message","checks":[{"type":"required","message":"Message is required"}]}}}',
+      '{"op":"add","path":"/elements/p1","value":{"type":"Progress","props":{"value":72,"label":"Deals Closed -- 72%"}}}',
   },
   {
     tree: {
       root: "card",
-      state: FORM_STATE,
+      state: DASH_STATE,
       elements: {
         card: {
           type: "Card",
-          props: { title: "Contact Us", maxWidth: "md" },
-          children: ["name", "email", "message", "submit"],
+          props: { title: "Team Performance", maxWidth: "sm", centered: true },
+          children: ["m1", "chart", "sep", "p1", "p2"],
         },
-        name: NAME_INPUT,
-        email: EMAIL_INPUT,
-        message: MESSAGE_INPUT,
-        submit: SUBMIT_BUTTON,
+        m1: METRIC_REVENUE,
+        chart: CHART,
+        sep: SEP,
+        p1: PROGRESS_DEALS,
+        p2: PROGRESS_RETENTION,
       },
     },
     stream:
-      '{"op":"add","path":"/elements/submit","value":{"type":"Button","props":{"label":"Send Message","variant":"primary"},"on":{"press":{"action":"formSubmit"}}}}',
+      '{"op":"add","path":"/elements/p2","value":{"type":"Progress","props":{"value":91,"label":"Retention -- 91%"}}}',
   },
 ];
 
@@ -211,10 +210,10 @@ function specToNested(spec: Spec): Record<string, unknown> {
 }
 
 const EXAMPLE_PROMPTS = [
-  "Create a login form with email and password",
-  "Build a feedback form with rating stars",
-  "Design a contact card with avatar",
-  "Make a settings panel with toggles",
+  "Recipe card with rating and ingredients",
+  "Order receipt with item list and total",
+  "Team member profile card",
+  "Notification inbox with alerts",
 ];
 
 export function Demo({
@@ -1117,7 +1116,7 @@ Open [http://localhost:3000](http://localhost:3000) to view.
             ))}
           </div>
           <div
-            className={`border border-border rounded bg-background font-mono text-xs text-left grid relative group ${fullscreen ? "flex-1 min-h-0" : "h-[28rem]"}`}
+            className={`border border-border rounded bg-background font-mono text-xs text-left grid relative group ${fullscreen ? "flex-1 min-h-0" : "h-[36rem]"}`}
           >
             {activeTab !== "catalog" && (
               <div className="absolute top-2 right-2 z-10">
@@ -1357,7 +1356,7 @@ Open [http://localhost:3000](http://localhost:3000) to view.
             </div>
           </div>
           <div
-            className={`border border-border rounded bg-background grid relative group ${fullscreen ? "flex-1 min-h-0" : "h-[28rem]"}`}
+            className={`border border-border rounded bg-background grid relative group ${fullscreen ? "flex-1 min-h-0" : "h-[36rem]"}`}
           >
             {renderView === "static" && (
               <div className="absolute top-2 right-2 z-10">

apps/web/components/docs-chat.tsx

@@ -261,10 +261,10 @@ export function DocsChat({
     }
   }, [messages, isLoading]);
 
-  // Cmd+K to open sidebar and focus prompt, Escape to close
+  // Cmd+I to open sidebar and focus prompt, Escape to close
   useEffect(() => {
     const handleKeyDown = (e: KeyboardEvent) => {
-      if (e.key === "k" && (e.metaKey || e.ctrlKey)) {
+      if (e.key === "i" && (e.metaKey || e.ctrlKey)) {
         e.preventDefault();
         setOpen((prev) => {
           if (!prev) {
@@ -497,12 +497,12 @@ export function DocsChat({
       {!open && (
         <button
           onClick={() => setOpen(true)}
-          className="fixed z-50 bottom-4 left-1/2 -translate-x-1/2 sm:left-auto sm:translate-x-0 sm:right-4 flex items-center gap-2 px-4 py-2 rounded-lg border bg-background text-primary shadow-lg hover:bg-primary hover:text-primary-foreground transition-colors text-sm font-medium"
+          className="fixed z-50 bottom-4 left-1/2 -translate-x-1/2 sm:left-auto sm:translate-x-0 sm:right-4 flex items-center gap-2 px-4 py-2 rounded-lg border border-primary bg-primary text-primary-foreground shadow-lg hover:bg-primary/90 transition-colors text-sm font-medium"
           aria-label="Ask AI"
         >
           Ask AI
           <kbd className="hidden sm:inline-flex items-center gap-0.5 text-xs opacity-60 font-mono">
-            <span>&#8984;</span>K
+            <span>&#8984;</span>I
           </kbd>
         </button>
       )}

apps/web/components/generation-modes-diagram.tsx

@@ -1,100 +1,257 @@
 "use client";
 
-function Skeleton({ className = "" }: { className?: string }) {
-  return <div className={`rounded bg-muted-foreground/10 ${className}`} />;
-}
-
-/** Simple form wireframe reused in both diagrams */
-function FormUI() {
+function ScheduleItem({
+  time,
+  label,
+  color,
+}: {
+  time: string;
+  label: string;
+  color: string;
+}) {
   return (
-    <div className="border border-border rounded-lg p-2.5 space-y-1.5 bg-muted/30">
-      {/* Title */}
-      <Skeleton className="h-2.5 w-14 mb-1" />
-      {/* Input fields */}
-      <Skeleton className="h-4 w-full rounded-sm" />
-      <Skeleton className="h-4 w-full rounded-sm" />
-      {/* Submit button */}
-      <Skeleton className="h-4 w-16 rounded-sm bg-muted-foreground/20 mt-1" />
+    <div className="flex items-center gap-2 py-1.5 border-t border-border/50 first:border-t-0">
+      <span className="text-[10px] text-muted-foreground/60 w-12 shrink-0 tabular-nums">
+        {time}
+      </span>
+      <span
+        className="w-1.5 h-1.5 rounded-full shrink-0"
+        style={{ background: color }}
+      />
+      <span className="text-[11px] text-muted-foreground">{label}</span>
     </div>
   );
 }
 
-function ChatModeDiagram() {
+function InlineModeDiagram() {
   return (
     <div className="flex flex-col h-full">
-      <div className="text-xs font-medium text-muted-foreground mb-3 text-center">
-        Chat Mode
+      <div className="text-sm font-medium text-foreground text-center mb-3">
+        Inline Mode
       </div>
-      <div className="flex-1 border border-border rounded-lg bg-background overflow-hidden flex flex-col">
-        {/* Chat area */}
-        <div className="flex-1 p-3 overflow-hidden flex justify-center">
-          <div className="w-1/3 min-w-[120px] space-y-3">
+      <div className="flex-1 border border-border rounded-2xl bg-background overflow-hidden flex flex-col">
+        <div className="flex-1 p-4 space-y-3 overflow-hidden">
+          {/* User message */}
+          <div className="flex justify-end">
+            <div className="bg-muted-foreground/20 rounded-2xl rounded-br px-3.5 py-2 max-w-[85%]">
+              <span className="text-[11px] text-foreground/80">
+                I have back-to-back meetings today
+              </span>
+            </div>
+          </div>
+
+          {/* AI response */}
+          <div className="space-y-2">
+            <p className="text-[11px] text-muted-foreground/70">
+              Packed day! Here&apos;s what you&apos;ve got:
+            </p>
+            <div className="bg-muted/40 border border-border rounded-xl p-3 w-[92%]">
+              <div className="text-[11px] font-semibold text-foreground/80 mb-2">
+                Today&apos;s Schedule
+              </div>
+              <ScheduleItem
+                time="10:00 AM"
+                label="Design Review"
+                color="#7aa2f7"
+              />
+              <ScheduleItem
+                time="1:00 PM"
+                label="Sprint Planning"
+                color="#bb9af7"
+              />
+              <ScheduleItem
+                time="3:30 PM"
+                label="Team Standup"
+                color="#9ece6a"
+              />
+              <ScheduleItem
+                time="4:30 PM"
+                label="Eng All-Hands"
+                color="#e0af68"
+              />
+            </div>
+          </div>
+        </div>
+
+        {/* Prompt input */}
+        <div className="p-2.5">
+          <div className="bg-muted/50 border border-border rounded-xl px-2.5 py-1.5 flex items-center gap-1.5">
+            <span className="text-[10px] text-muted-foreground/40 flex-1">
+              Message...
+            </span>
+            <div className="w-5 h-5 rounded-md bg-muted-foreground/20 flex items-center justify-center">
+              <svg
+                className="w-2.5 h-2.5 text-muted-foreground/50"
+                viewBox="0 0 24 24"
+                fill="currentColor"
+              >
+                <path
+                  d="M12 4l-1.41 1.41L16.17 11H4v2h12.17l-5.58 5.59L12 20l8-8z"
+                  transform="rotate(-90 12 12)"
+                />
+              </svg>
+            </div>
+          </div>
+        </div>
+      </div>
+      <div className="mt-3 flex flex-col items-center gap-2">
+        <div className="text-xs font-medium text-muted-foreground">
+          AI decides when UI beats text
+        </div>
+        <div className="flex items-center gap-1.5 text-[10px] text-muted-foreground/50">
+          <span>AI chatbots</span>
+          <span className="text-muted-foreground/30">/</span>
+          <span>Copilots</span>
+          <span className="text-muted-foreground/30">/</span>
+          <span>Assistants</span>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+function LandingPage() {
+  return (
+    <div className="w-full h-full flex flex-col bg-muted/20">
+      {/* Nav */}
+      <div className="flex items-center justify-between px-3 py-2 border-b border-border/50">
+        <svg
+          width="12"
+          height="12"
+          viewBox="0 0 24 24"
+          fill="none"
+          className="shrink-0"
+        >
+          <rect
+            x="2"
+            y="14"
+            width="5"
+            height="8"
+            rx="1"
+            className="fill-muted-foreground/60"
+          />
+          <rect
+            x="9.5"
+            y="8"
+            width="5"
+            height="14"
+            rx="1"
+            className="fill-muted-foreground/60"
+          />
+          <rect
+            x="17"
+            y="2"
+            width="5"
+            height="20"
+            rx="1"
+            className="fill-muted-foreground/60"
+          />
+        </svg>
+        <div className="flex items-center gap-2">
+          <span className="text-[9px] text-muted-foreground/50">Pricing</span>
+          <span className="text-[9px] text-muted-foreground/50">Blog</span>
+          <span className="text-[8px] font-semibold bg-foreground text-background rounded-md px-1.5 py-0.5 whitespace-nowrap">
+            Get Started
+          </span>
+        </div>
+      </div>
+
+      {/* Hero */}
+      <div className="flex-1 flex flex-col items-center justify-center gap-2.5 text-center px-4">
+        <span className="text-[8px] font-medium text-green-400 bg-green-400/10 border border-green-400/15 rounded-full px-2 py-0.5">
+          Trusted by 2,000+ teams
+        </span>
+        <div className="text-sm font-bold text-foreground leading-tight">
+          Analytics that
+          <br />
+          move the needle
+        </div>
+        <div className="text-[10px] text-muted-foreground/50 leading-relaxed">
+          Ship what matters. No setup required.
+        </div>
+        <div className="flex gap-1.5 mt-1">
+          <button className="bg-foreground text-background text-[9px] font-semibold rounded-lg px-3 py-1.5 whitespace-nowrap">
+            Start Free
+          </button>
+          <button className="border border-border text-muted-foreground text-[9px] font-medium rounded-lg px-3 py-1.5 whitespace-nowrap">
+            Book Demo
+          </button>
+        </div>
+      </div>
+
+      {/* Footer */}
+      <div className="flex justify-center gap-3 py-2 border-t border-border/50">
+        <span className="text-[8px] text-muted-foreground/30">Privacy</span>
+        <span className="text-[8px] text-muted-foreground/30">Terms</span>
+        <span className="text-[8px] text-muted-foreground/30">Status</span>
+      </div>
+    </div>
+  );
+}
+
+function StandaloneModeDiagram() {
+  return (
+    <div className="flex flex-col h-full">
+      <div className="text-sm font-medium text-foreground text-center mb-3">
+        Standalone Mode
+      </div>
+      <div className="flex-1 border border-border rounded-2xl bg-background overflow-hidden flex flex-row">
+        {/* Left panel - conversation */}
+        <div className="w-[38%] border-r border-border/50 flex flex-col">
+          <div className="flex-1 p-3 space-y-2.5">
             {/* User message */}
             <div className="flex justify-end">
-              <div className="bg-muted rounded-xl px-3 py-2">
-                <Skeleton className="h-2 w-14" />
+              <div className="bg-muted-foreground/20 rounded-2xl rounded-br px-2.5 py-1.5">
+                <span className="text-[10px] text-foreground/80 block leading-relaxed">
+                  A landing page for my analytics startup
+                </span>
               </div>
             </div>
+            {/* AI text */}
+            <p className="text-[10px] text-muted-foreground/60 leading-relaxed">
+              Here&apos;s a clean landing page with a hero, nav, and CTAs.
+            </p>
+          </div>
 
-            {/* Assistant text */}
-            <div className="space-y-2">
-              <div className="space-y-1.5">
-                <Skeleton className="h-2 w-full" />
-                <Skeleton className="h-2 w-3/4" />
-              </div>
-
-              {/* Inline UI */}
-              <FormUI />
-
-              {/* More text after UI */}
-              <div className="space-y-1.5">
-                <Skeleton className="h-2 w-4/5" />
+          {/* Prompt input */}
+          <div className="p-2.5">
+            <div className="bg-muted/50 border border-border rounded-xl px-2.5 py-1.5 flex items-center gap-1.5">
+              <span className="text-[10px] text-muted-foreground/40 flex-1">
+                Message...
+              </span>
+              <div className="w-5 h-5 rounded-md bg-muted-foreground/20 flex items-center justify-center">
+                <svg
+                  className="w-2.5 h-2.5 text-muted-foreground/50"
+                  viewBox="0 0 24 24"
+                  fill="currentColor"
+                >
+                  <path
+                    d="M12 4l-1.41 1.41L16.17 11H4v2h12.17l-5.58 5.59L12 20l8-8z"
+                    transform="rotate(-90 12 12)"
+                  />
+                </svg>
               </div>
             </div>
           </div>
         </div>
 
-        {/* Input bar */}
-        <div className="p-2 flex justify-center">
-          <div className="w-1/3 min-w-[120px] flex items-center gap-2">
-            <Skeleton className="h-7 flex-1 rounded-md" />
-            <Skeleton className="h-7 w-7 rounded-md" />
-          </div>
+        {/* Right panel - landing page */}
+        <div className="flex-1">
+          <LandingPage />
         </div>
       </div>
-      <div className="text-[10px] text-muted-foreground/60 mt-2 text-center">
-        Text + UI interleaved in messages
-      </div>
-    </div>
-  );
-}
-
-function GenerateModeDiagram() {
-  return (
-    <div className="flex flex-col h-full">
-      <div className="text-xs font-medium text-muted-foreground mb-3 text-center">
-        Generate Mode
-      </div>
-      <div className="flex-1 border border-border rounded-lg bg-background overflow-hidden flex flex-row">
-        {/* Left panel - prompt */}
-        <div className="w-[38%] border-r border-border flex flex-col">
-          <div className="flex-1" />
-          <div className="p-3 space-y-2">
-            <Skeleton className="h-7 w-full rounded-md" />
-            <Skeleton className="h-5 w-16 rounded-md" />
-          </div>
+      <div className="mt-3 flex flex-col items-center gap-2">
+        <div className="text-xs font-medium text-muted-foreground">
+          Prompt in, UI out
         </div>
-
-        {/* Right panel - UI preview */}
-        <div className="flex-1 p-3 flex items-center justify-center">
-          <div className="w-3/4">
-            <FormUI />
-          </div>
+        <div className="flex items-center gap-1.5 text-[10px] text-muted-foreground/50">
+          <span>Website builders</span>
+          <span className="text-muted-foreground/30">/</span>
+          <span>Text-to-widget</span>
+          <span className="text-muted-foreground/30">/</span>
+          <span>Dashboards</span>
         </div>
       </div>
-      <div className="text-[10px] text-muted-foreground/60 mt-2 text-center">
-        Prompt separate from UI preview
-      </div>
     </div>
   );
 }
@@ -103,11 +260,11 @@ export function GenerationModesDiagram() {
   return (
     <div className="not-prose my-8">
       <div className="grid grid-cols-1 sm:grid-cols-2 gap-6">
-        <div className="h-[280px]">
-          <ChatModeDiagram />
+        <div className="h-[420px]">
+          <InlineModeDiagram />
         </div>
-        <div className="h-[280px]">
-          <GenerateModeDiagram />
+        <div className="h-[420px]">
+          <StandaloneModeDiagram />
         </div>
       </div>
     </div>

apps/web/components/header.tsx

@@ -1,17 +1,65 @@
 "use client";
 
+import { useState } from "react";
 import Link from "next/link";
 import { usePathname } from "next/navigation";
 import { ThemeToggle } from "./theme-toggle";
+import { Search } from "./search";
+import {
+  Sheet,
+  SheetTrigger,
+  SheetContent,
+  SheetTitle,
+} from "@/components/ui/sheet";
 import { cn } from "@/lib/utils";
 
-export function Header() {
+const navLinks = [
+  { href: "/playground", label: "Playground" },
+  { href: "/examples", label: "Examples" },
+  { href: "/docs", label: "Docs" },
+];
+
+function GitHubLink({
+  className,
+  stars,
+}: {
+  className?: string;
+  stars?: string;
+}) {
+  return (
+    <a
+      href="https://github.com/vercel-labs/json-render"
+      target="_blank"
+      rel="noopener noreferrer"
+      className={cn(
+        "flex items-center gap-1.5 text-sm text-muted-foreground hover:text-foreground transition-colors",
+        className,
+      )}
+    >
+      <svg
+        viewBox="0 0 16 16"
+        className="h-4 w-4"
+        fill="currentColor"
+        aria-hidden="true"
+      >
+        <path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0016 8c0-4.42-3.58-8-8-8z" />
+      </svg>
+      {stars && <span>{stars}</span>}
+    </a>
+  );
+}
+
+export function Header({ stars }: { stars?: string }) {
   const pathname = usePathname();
+  const [mobileOpen, setMobileOpen] = useState(false);
 
   const isActive = (href: string) => {
     if (href === "/playground") {
       return pathname === "/playground";
     }
+    if (href === "/examples") {
+      return pathname.startsWith("/examples");
+    }
     if (href === "/docs") {
       return pathname.startsWith("/docs");
     }
@@ -62,48 +110,81 @@ export function Header() {
             </span>
           </Link>
         </div>
-        <nav className="flex items-center gap-4">
-          <Link
-            href="/playground"
-            className={cn(
-              "text-sm transition-colors",
-              isActive("/playground")
-                ? "text-primary font-medium"
-                : "text-muted-foreground hover:text-foreground",
-            )}
-          >
-            <span className="sm:hidden">Play</span>
-            <span className="hidden sm:inline">Playground</span>
-          </Link>
-          <Link
-            href="/docs"
-            className={cn(
-              "text-sm transition-colors",
-              isActive("/docs")
-                ? "text-primary font-medium"
-                : "text-muted-foreground hover:text-foreground",
-            )}
-          >
-            Docs
-          </Link>
-          <a
-            href="https://github.com/vercel-labs/json-render"
-            target="_blank"
-            rel="noopener noreferrer"
-            className="flex items-center gap-1.5 text-sm text-muted-foreground hover:text-foreground transition-colors"
-          >
-            <svg
-              viewBox="0 0 16 16"
-              className="h-4 w-4"
-              fill="currentColor"
-              aria-hidden="true"
+
+        {/* Desktop nav */}
+        <nav className="hidden sm:flex items-center gap-4">
+          {navLinks.map((link) => (
+            <Link
+              key={link.href}
+              href={link.href}
+              className={cn(
+                "text-sm transition-colors",
+                isActive(link.href)
+                  ? "text-primary"
+                  : "text-muted-foreground hover:text-foreground",
+              )}
             >
-              <path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0016 8c0-4.42-3.58-8-8-8z" />
-            </svg>
-            <span>11k</span>
-          </a>
+              {link.label}
+            </Link>
+          ))}
+          <Search />
+          <GitHubLink stars={stars} />
           <ThemeToggle />
         </nav>
+
+        {/* Mobile nav */}
+        <div className="flex sm:hidden items-center gap-3">
+          <Search />
+          <GitHubLink stars={stars} />
+          <Sheet open={mobileOpen} onOpenChange={setMobileOpen}>
+            <SheetTrigger
+              className="flex items-center justify-center"
+              aria-label="Open menu"
+            >
+              <svg
+                xmlns="http://www.w3.org/2000/svg"
+                width="20"
+                height="20"
+                viewBox="0 0 24 24"
+                fill="none"
+                stroke="currentColor"
+                strokeWidth="2"
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                className="text-muted-foreground"
+              >
+                <line x1="4" x2="20" y1="12" y2="12" />
+                <line x1="4" x2="20" y1="6" y2="6" />
+                <line x1="4" x2="20" y1="18" y2="18" />
+              </svg>
+            </SheetTrigger>
+            <SheetContent side="right" className="overflow-y-auto p-6">
+              <SheetTitle className="mb-6">Menu</SheetTitle>
+              <nav className="flex flex-col gap-1">
+                {navLinks.map((link) => (
+                  <Link
+                    key={link.href}
+                    href={link.href}
+                    onClick={() => setMobileOpen(false)}
+                    className={cn(
+                      "block py-2.5 text-sm transition-colors",
+                      isActive(link.href)
+                        ? "text-primary"
+                        : "text-muted-foreground hover:text-foreground",
+                    )}
+                  >
+                    {link.label}
+                  </Link>
+                ))}
+                <div className="my-3 border-t border-border" />
+                <div className="flex items-center justify-between py-2.5">
+                  <span className="text-sm text-muted-foreground">Theme</span>
+                  <ThemeToggle />
+                </div>
+              </nav>
+            </SheetContent>
+          </Sheet>
+        </div>
       </div>
     </header>
   );

apps/web/components/playground.tsx

@@ -2,10 +2,16 @@
 
 import { useEffect, useState, useCallback, useRef, useMemo } from "react";
 import { flushSync } from "react-dom";
-import { useUIStream, type TokenUsage } from "@json-render/react";
 import type { Spec } from "@json-render/core";
 import { collectUsedComponents, serializeProps } from "@json-render/codegen";
 import { toast } from "sonner";
+import { stringify as yamlStringify } from "yaml";
+import type { EditMode } from "@json-render/core";
+import {
+  usePlaygroundStream,
+  type StreamFormat,
+  type TokenUsage,
+} from "@/lib/use-playground-stream";
 import {
   ResizablePanelGroup,
   ResizablePanel,
@@ -22,10 +28,10 @@ import { PlaygroundRenderer } from "@/lib/render/renderer";
 import { playgroundCatalog } from "@/lib/render/catalog";
 import { buildCatalogDisplayData } from "@/lib/render/catalog-display";
 
-type Tab = "json" | "nested" | "stream" | "catalog" | "visual";
+type Tab = "spec" | "nested" | "stream" | "catalog" | "visual";
 type RenderView = "preview" | "code";
 type MobileView =
-  | "json"
+  | "spec"
   | "nested"
   | "stream"
   | "catalog"
@@ -40,6 +46,79 @@ interface Version {
   status: "generating" | "complete" | "error";
   usage: TokenUsage | null;
   rawLines: string[];
+  format: StreamFormat;
+}
+
+function formatTokens(n: number): string {
+  if (n >= 1000) return `${(n / 1000).toFixed(1).replace(/\.0$/, "")}k`;
+  return String(n);
+}
+
+function PlaygroundControls({
+  format,
+  setFormat,
+  editModes,
+  setEditModes,
+  showClear,
+  onClear,
+}: {
+  format: StreamFormat;
+  setFormat: (f: StreamFormat) => void;
+  editModes: EditMode[];
+  setEditModes: React.Dispatch<React.SetStateAction<EditMode[]>>;
+  showClear: boolean;
+  onClear: () => void;
+}) {
+  return (
+    <div className="flex items-center gap-2">
+      <div className="flex items-center rounded border border-border text-[10px] font-mono overflow-hidden">
+        {(["jsonl", "yaml"] as const).map((f) => (
+          <button
+            key={f}
+            onClick={() => setFormat(f)}
+            className={`px-1.5 py-0.5 transition-colors ${
+              format === f
+                ? "bg-muted text-foreground"
+                : "text-muted-foreground hover:text-foreground"
+            }`}
+          >
+            {f}
+          </button>
+        ))}
+      </div>
+      <div className="flex items-center rounded border border-border text-[10px] font-mono overflow-hidden">
+        {(["patch", "merge", "diff"] as const).map((m) => (
+          <button
+            key={m}
+            onClick={() => {
+              setEditModes((prev) =>
+                prev.includes(m)
+                  ? prev.length > 1
+                    ? prev.filter((x) => x !== m)
+                    : prev
+                  : [...prev, m],
+              );
+            }}
+            className={`px-1.5 py-0.5 transition-colors ${
+              editModes.includes(m)
+                ? "bg-muted text-foreground"
+                : "text-muted-foreground hover:text-foreground"
+            }`}
+          >
+            {m}
+          </button>
+        ))}
+      </div>
+      {showClear && (
+        <button
+          onClick={onClear}
+          className="text-xs text-muted-foreground hover:text-foreground transition-colors"
+        >
+          Clear
+        </button>
+      )}
+    </div>
+  );
 }
 
 /**
@@ -100,13 +179,15 @@ export function Playground() {
     null,
   );
   const [inputValue, setInputValue] = useState("");
-  const [activeTab, setActiveTab] = useState<Tab>("json");
+  const [activeTab, setActiveTab] = useState<Tab>("spec");
   const [catalogSection, setCatalogSection] = useState<
     "components" | "actions"
   >("components");
   const [renderView, setRenderView] = useState<RenderView>("preview");
   const [mobileView, setMobileView] = useState<MobileView>("preview");
   const [versionsSheetOpen, setVersionsSheetOpen] = useState(false);
+  const [format, setFormat] = useState<StreamFormat>("jsonl");
+  const [editModes, setEditModes] = useState<EditMode[]>(["patch"]);
   const inputRef = useRef<HTMLTextAreaElement>(null);
   const mobileInputRef = useRef<HTMLTextAreaElement>(null);
   const versionsEndRef = useRef<HTMLDivElement>(null);
@@ -124,12 +205,13 @@ export function Playground() {
     rawLines: streamRawLines,
     send,
     clear,
-  } = useUIStream({
+  } = usePlaygroundStream({
     api: "/api/generate",
+    format,
+    editModes,
     onError: (err: Error) => {
       console.error("Generation error:", err);
       toast.error(err.message || "Generation failed. Please try again.");
-      // Mark the version as errored
       if (generatingVersionIdRef.current) {
         const erroredVersionId = generatingVersionIdRef.current;
         setVersions((prev) =>
@@ -140,7 +222,7 @@ export function Playground() {
         generatingVersionIdRef.current = null;
       }
     },
-  } as Parameters<typeof useUIStream>[0]);
+  });
 
   // Get the selected version
   const selectedVersion = versions.find((v) => v.id === selectedVersionId);
@@ -215,6 +297,7 @@ export function Playground() {
       status: "generating",
       usage: null,
       rawLines: [],
+      format,
     };
 
     generatingVersionIdRef.current = newVersionId;
@@ -224,7 +307,7 @@ export function Playground() {
 
     // Pass the current tree as context so the API can iterate on it
     await send(inputValue.trim(), { previousSpec: currentTreeRef.current });
-  }, [inputValue, isStreaming, send]);
+  }, [inputValue, isStreaming, send, format]);
 
   const handleKeyDown = useCallback(
     (e: React.KeyboardEvent) => {
@@ -250,9 +333,16 @@ export function Playground() {
     [selectedVersionId, isStreaming],
   );
 
-  const jsonCode = currentTree
-    ? JSON.stringify(currentTree, null, 2)
-    : "// waiting...";
+  const specCode = useMemo(() => {
+    if (!currentTree)
+      return format === "yaml" ? "# waiting..." : "// waiting...";
+    if (format === "yaml") {
+      return yamlStringify(currentTree, { indent: 2 }).trimEnd();
+    }
+    return JSON.stringify(currentTree, null, 2);
+  }, [currentTree, format]);
+
+  const specLang = format === "yaml" ? "yaml" : "json";
 
   const nestedCode = useMemo(() => {
     if (!currentTree || !currentTree.root) return "// waiting...";
@@ -275,7 +365,7 @@ export function Playground() {
       const componentName = element.type;
 
       const propsObj: Record<string, unknown> = {};
-      for (const [k, v] of Object.entries(element.props)) {
+      for (const [k, v] of Object.entries(element.props ?? {})) {
         if (v !== null && v !== undefined) {
           propsObj[k] = v;
         }
@@ -321,6 +411,15 @@ ${jsx}
 }`;
   }, [currentTree]);
 
+  // Determine syntax lang for raw stream based on selected version's format
+  const streamLang = isSelectedVersionGenerating
+    ? format === "yaml"
+      ? "yaml"
+      : "json"
+    : selectedVersion?.format === "yaml"
+      ? "yaml"
+      : "json";
+
   // Chat pane content
   const chatPane = (
     <div className="h-full flex flex-col border-t border-border">
@@ -392,9 +491,15 @@ ${jsx}
                 )}
               </div>
               {version.usage && (
-                <div className="flex items-center gap-2 mt-1 ml-6">
+                <div className="mt-1 ml-6">
                   <span className="text-[10px] font-mono text-muted-foreground/60">
-                    {version.usage.totalTokens.toLocaleString()} tokens
+                    {formatTokens(
+                      version.usage.promptTokens - version.usage.cachedTokens,
+                    )}{" "}
+                    in · {formatTokens(version.usage.completionTokens)} out
+                    {version.usage.cachedTokens > 0
+                      ? ` · ${formatTokens(version.usage.cachedTokens)} cached`
+                      : ""}
                   </span>
                 </div>
               )}
@@ -425,20 +530,18 @@ ${jsx}
           autoFocus
         />
         <div className="flex justify-between items-center mt-2">
-          {versions.length > 0 ? (
-            <button
-              onClick={() => {
-                setVersions([]);
-                setSelectedVersionId(null);
-                clear();
-              }}
-              className="text-xs text-muted-foreground hover:text-foreground transition-colors"
-            >
-              Clear
-            </button>
-          ) : (
-            <div />
-          )}
+          <PlaygroundControls
+            format={format}
+            setFormat={setFormat}
+            editModes={editModes}
+            setEditModes={setEditModes}
+            showClear={versions.length > 0}
+            onClear={() => {
+              setVersions([]);
+              setSelectedVersionId(null);
+              clear();
+            }}
+          />
           {isStreaming ? (
             <button
               onClick={() => clear()}
@@ -492,18 +595,18 @@ ${jsx}
   const copyText =
     activeTab === "stream"
       ? currentRawLines.join("\n")
-      : activeTab === "json"
-        ? jsonCode
+      : activeTab === "spec"
+        ? specCode
         : activeTab === "nested"
           ? nestedCode
           : activeTab === "visual"
-            ? jsonCode
+            ? specCode
             : "";
 
   const codePane = (
     <div className="h-full flex flex-col border-t border-border">
       <div className="border-b border-border px-3 h-9 flex items-center gap-3">
-        {(["json", "visual", "nested", "stream", "catalog"] as const).map(
+        {(["spec", "visual", "nested", "stream", "catalog"] as const).map(
           (tab) => (
             <button
               key={tab}
@@ -514,7 +617,7 @@ ${jsx}
                   : "text-muted-foreground hover:text-foreground"
               }`}
             >
-              {tab}
+              {tab === "spec" ? (format === "yaml" ? "yaml" : "json") : tab}
             </button>
           ),
         )}
@@ -679,7 +782,7 @@ ${jsx}
           currentRawLines.length > 0 ? (
             <CodeBlock
               code={currentRawLines.join("\n")}
-              lang="json"
+              lang={streamLang}
               fillHeight
               hideCopyButton
             />
@@ -691,7 +794,12 @@ ${jsx}
         ) : activeTab === "nested" ? (
           <CodeBlock code={nestedCode} lang="json" fillHeight hideCopyButton />
         ) : (
-          <CodeBlock code={jsonCode} lang="json" fillHeight hideCopyButton />
+          <CodeBlock
+            code={specCode}
+            lang={specLang}
+            fillHeight
+            hideCopyButton
+          />
         )}
       </div>
     </div>
@@ -790,7 +898,7 @@ ${jsx}
               : 0}
           </button>
           {/* Code tabs */}
-          {(["json", "visual", "nested", "stream", "catalog"] as const).map(
+          {(["spec", "visual", "nested", "stream", "catalog"] as const).map(
             (tab) => (
               <button
                 key={tab}
@@ -801,7 +909,7 @@ ${jsx}
                     : "text-muted-foreground hover:text-foreground"
                 }`}
               >
-                {tab}
+                {tab === "spec" ? (format === "yaml" ? "yaml" : "json") : tab}
               </button>
             ),
           )}
@@ -982,7 +1090,7 @@ ${jsx}
             currentRawLines.length > 0 ? (
               <CodeBlock
                 code={currentRawLines.join("\n")}
-                lang="json"
+                lang={streamLang}
                 fillHeight
                 hideCopyButton
               />
@@ -998,8 +1106,13 @@ ${jsx}
               fillHeight
               hideCopyButton
             />
-          ) : mobileView === "json" ? (
-            <CodeBlock code={jsonCode} lang="json" fillHeight hideCopyButton />
+          ) : mobileView === "spec" ? (
+            <CodeBlock
+              code={specCode}
+              lang={specLang}
+              fillHeight
+              hideCopyButton
+            />
           ) : mobileView === "preview" ? (
             currentTree && currentTree.root ? (
               <div className="w-full min-h-full flex items-center justify-center p-6">
@@ -1075,20 +1188,18 @@ ${jsx}
             rows={2}
           />
           <div className="flex justify-between items-center mt-2">
-            {versions.length > 0 ? (
-              <button
-                onClick={() => {
-                  setVersions([]);
-                  setSelectedVersionId(null);
-                  clear();
-                }}
-                className="text-xs text-muted-foreground hover:text-foreground transition-colors"
-              >
-                Clear
-              </button>
-            ) : (
-              <div />
-            )}
+            <PlaygroundControls
+              format={format}
+              setFormat={setFormat}
+              editModes={editModes}
+              setEditModes={setEditModes}
+              showClear={versions.length > 0}
+              onClear={() => {
+                setVersions([]);
+                setSelectedVersionId(null);
+                clear();
+              }}
+            />
             {isStreaming ? (
               <button
                 onClick={() => clear()}
@@ -1165,9 +1276,16 @@ ${jsx}
                     )}
                   </div>
                   {version.usage && (
-                    <div className="flex items-center gap-2 mt-1 ml-6">
+                    <div className="mt-1 ml-6">
                       <span className="text-[10px] font-mono text-muted-foreground/60">
-                        {version.usage.totalTokens.toLocaleString()} tokens
+                        {formatTokens(
+                          version.usage.promptTokens -
+                            version.usage.cachedTokens,
+                        )}{" "}
+                        in · {formatTokens(version.usage.completionTokens)} out
+                        {version.usage.cachedTokens > 0
+                          ? ` · ${formatTokens(version.usage.cachedTokens)} cached`
+                          : ""}
                       </span>
                     </div>
                   )}

apps/web/components/search.tsx

@@ -0,0 +1,266 @@
+"use client";
+
+import { useCallback, useEffect, useRef, useState } from "react";
+import { useRouter } from "next/navigation";
+import { Dialog, DialogContent, DialogTitle } from "@/components/ui/dialog";
+import { cn } from "@/lib/utils";
+
+type SearchResult = {
+  title: string;
+  href: string;
+  section: string;
+  snippet: string;
+};
+
+export function Search() {
+  const router = useRouter();
+  const [open, setOpen] = useState(false);
+  const [query, setQuery] = useState("");
+  const [results, setResults] = useState<SearchResult[]>([]);
+  const [loading, setLoading] = useState(false);
+  const [activeIndex, setActiveIndex] = useState(0);
+  const inputRef = useRef<HTMLInputElement>(null);
+  const listRef = useRef<HTMLDivElement>(null);
+  const abortRef = useRef<AbortController | null>(null);
+
+  const navigate = useCallback(
+    (href: string) => {
+      setOpen(false);
+      setQuery("");
+      setResults([]);
+      router.push(href);
+    },
+    [router],
+  );
+
+  useEffect(() => {
+    function onKeyDown(e: KeyboardEvent) {
+      if ((e.metaKey || e.ctrlKey) && e.key === "k") {
+        e.preventDefault();
+        setOpen((prev) => !prev);
+      }
+    }
+    document.addEventListener("keydown", onKeyDown);
+    return () => document.removeEventListener("keydown", onKeyDown);
+  }, []);
+
+  useEffect(() => {
+    if (open) {
+      setTimeout(() => inputRef.current?.focus(), 0);
+    } else {
+      setQuery("");
+      setResults([]);
+    }
+  }, [open]);
+
+  useEffect(() => {
+    const q = query.trim();
+    if (!q) {
+      setResults([]);
+      setLoading(false);
+      return;
+    }
+
+    setLoading(true);
+    abortRef.current?.abort();
+    const controller = new AbortController();
+    abortRef.current = controller;
+
+    const timeout = setTimeout(async () => {
+      try {
+        const res = await fetch(`/api/search?q=${encodeURIComponent(q)}`, {
+          signal: controller.signal,
+        });
+        if (res.ok) {
+          const data = await res.json();
+          setResults(data.results);
+        }
+      } catch {
+        // aborted or network error
+      } finally {
+        if (!controller.signal.aborted) {
+          setLoading(false);
+        }
+      }
+    }, 150);
+
+    return () => {
+      clearTimeout(timeout);
+      controller.abort();
+    };
+  }, [query]);
+
+  useEffect(() => {
+    setActiveIndex(0);
+  }, [results]);
+
+  function handleKeyDown(e: React.KeyboardEvent) {
+    if (e.key === "ArrowDown") {
+      e.preventDefault();
+      setActiveIndex((i) => Math.min(i + 1, results.length - 1));
+    } else if (e.key === "ArrowUp") {
+      e.preventDefault();
+      setActiveIndex((i) => Math.max(i - 1, 0));
+    } else if (e.key === "Enter" && results[activeIndex]) {
+      e.preventDefault();
+      navigate(results[activeIndex].href);
+    }
+  }
+
+  useEffect(() => {
+    const active = listRef.current?.querySelector("[data-active='true']");
+    active?.scrollIntoView({ block: "nearest" });
+  }, [activeIndex]);
+
+  const hasQuery = query.trim().length > 0;
+
+  return (
+    <>
+      <button
+        onClick={() => setOpen(true)}
+        className="hidden sm:flex items-center gap-2 rounded-md border border-border bg-muted/50 px-3 py-1.5 text-sm text-muted-foreground hover:text-foreground hover:border-foreground/25 transition-colors"
+      >
+        <svg
+          xmlns="http://www.w3.org/2000/svg"
+          width="14"
+          height="14"
+          viewBox="0 0 24 24"
+          fill="none"
+          stroke="currentColor"
+          strokeWidth="2"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+        >
+          <circle cx="11" cy="11" r="8" />
+          <path d="m21 21-4.3-4.3" />
+        </svg>
+        Search docs
+        <kbd className="pointer-events-none ml-1 inline-flex items-center gap-0.5 rounded border border-border bg-background px-1.5 py-0.5 font-mono text-[10px] text-muted-foreground">
+          <span>&#8984;</span>K
+        </kbd>
+      </button>
+
+      <button
+        onClick={() => setOpen(true)}
+        className="sm:hidden flex items-center text-muted-foreground hover:text-foreground transition-colors"
+        aria-label="Search docs"
+      >
+        <svg
+          xmlns="http://www.w3.org/2000/svg"
+          width="16"
+          height="16"
+          viewBox="0 0 24 24"
+          fill="none"
+          stroke="currentColor"
+          strokeWidth="2"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+        >
+          <circle cx="11" cy="11" r="8" />
+          <path d="m21 21-4.3-4.3" />
+        </svg>
+      </button>
+
+      <Dialog open={open} onOpenChange={setOpen}>
+        <DialogContent
+          showCloseButton={false}
+          className="gap-0 p-0 sm:max-w-lg"
+        >
+          <DialogTitle className="sr-only">Search documentation</DialogTitle>
+          <div className="flex items-center gap-2 border-b px-3">
+            <svg
+              xmlns="http://www.w3.org/2000/svg"
+              width="16"
+              height="16"
+              viewBox="0 0 24 24"
+              fill="none"
+              stroke="currentColor"
+              strokeWidth="2"
+              strokeLinecap="round"
+              strokeLinejoin="round"
+              className="shrink-0 text-muted-foreground"
+            >
+              <circle cx="11" cy="11" r="8" />
+              <path d="m21 21-4.3-4.3" />
+            </svg>
+            <input
+              ref={inputRef}
+              value={query}
+              onChange={(e) => setQuery(e.target.value)}
+              onKeyDown={handleKeyDown}
+              placeholder="Search docs..."
+              className="flex-1 bg-transparent py-3 text-sm outline-none placeholder:text-muted-foreground"
+            />
+            {query && (
+              <button
+                onClick={() => setQuery("")}
+                className="text-muted-foreground hover:text-foreground"
+              >
+                <svg
+                  xmlns="http://www.w3.org/2000/svg"
+                  width="14"
+                  height="14"
+                  viewBox="0 0 24 24"
+                  fill="none"
+                  stroke="currentColor"
+                  strokeWidth="2"
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                >
+                  <path d="M18 6 6 18" />
+                  <path d="m6 6 12 12" />
+                </svg>
+              </button>
+            )}
+          </div>
+
+          <div
+            ref={listRef}
+            className="max-h-[min(60vh,400px)] overflow-y-auto p-2"
+          >
+            {loading && hasQuery ? (
+              <div className="flex items-center justify-center py-6">
+                <div className="h-4 w-4 animate-spin rounded-full border-2 border-muted-foreground border-t-transparent" />
+              </div>
+            ) : hasQuery && results.length === 0 ? (
+              <p className="py-6 text-center text-sm text-muted-foreground">
+                No results found.
+              </p>
+            ) : !hasQuery ? (
+              <p className="py-6 text-center text-sm text-muted-foreground">
+                Type to search documentation...
+              </p>
+            ) : (
+              results.map((item, i) => (
+                <button
+                  key={item.href}
+                  data-active={i === activeIndex}
+                  onClick={() => navigate(item.href)}
+                  onMouseEnter={() => setActiveIndex(i)}
+                  className={cn(
+                    "flex w-full flex-col gap-1 rounded-md px-3 py-2 text-left transition-colors",
+                    i === activeIndex
+                      ? "bg-accent text-accent-foreground"
+                      : "text-foreground",
+                  )}
+                >
+                  <div className="flex items-center justify-between gap-2">
+                    <span className="text-sm font-medium">{item.title}</span>
+                    <span className="shrink-0 text-xs text-muted-foreground">
+                      {item.section}
+                    </span>
+                  </div>
+                  {item.snippet && (
+                    <span className="line-clamp-2 text-xs text-muted-foreground leading-relaxed">
+                      {item.snippet}
+                    </span>
+                  )}
+                </button>
+              ))
+            )}
+          </div>
+        </DialogContent>
+      </Dialog>
+    </>
+  );
+}

apps/web/components/table-of-contents.tsx

@@ -0,0 +1,83 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import { usePathname } from "next/navigation";
+import { cn } from "@/lib/utils";
+
+type Heading = {
+  id: string;
+  text: string;
+  level: number;
+};
+
+function getHeadings(): Heading[] {
+  const article = document.querySelector("article");
+  if (!article) return [];
+  const elements = article.querySelectorAll("h2[id], h3[id]");
+  return Array.from(elements).map((el) => ({
+    id: el.id,
+    text: el.textContent?.replace(/#$/, "").trim() ?? "",
+    level: el.tagName === "H3" ? 3 : 2,
+  }));
+}
+
+export function TableOfContents() {
+  const pathname = usePathname();
+  const [headings, setHeadings] = useState<Heading[]>([]);
+  const [activeId, setActiveId] = useState<string>("");
+
+  useEffect(() => {
+    const timer = setTimeout(() => setHeadings(getHeadings()), 100);
+    return () => clearTimeout(timer);
+  }, [pathname]);
+
+  useEffect(() => {
+    if (headings.length === 0) return;
+
+    const observer = new IntersectionObserver(
+      (entries) => {
+        for (const entry of entries) {
+          if (entry.isIntersecting) {
+            setActiveId(entry.target.id);
+          }
+        }
+      },
+      { rootMargin: "0px 0px -75% 0px", threshold: 0.1 },
+    );
+
+    for (const h of headings) {
+      const el = document.getElementById(h.id);
+      if (el) observer.observe(el);
+    }
+
+    return () => observer.disconnect();
+  }, [headings]);
+
+  if (headings.length === 0) return null;
+
+  return (
+    <nav aria-label="On this page">
+      <h4 className="text-xs font-medium text-muted-foreground uppercase tracking-wider mb-3">
+        On this page
+      </h4>
+      <ul className="space-y-1">
+        {headings.map((h) => (
+          <li key={h.id}>
+            <a
+              href={`#${h.id}`}
+              className={cn(
+                "block text-xs leading-relaxed py-0.5 transition-colors",
+                h.level === 3 && "pl-3",
+                activeId === h.id
+                  ? "text-foreground"
+                  : "text-muted-foreground hover:text-foreground",
+              )}
+            >
+              {h.text}
+            </a>
+          </li>
+        ))}
+      </ul>
+    </nav>
+  );
+}

apps/web/lib/docs-navigation.ts

@@ -16,6 +16,7 @@ export const docsNavigation: NavSection[] = [
       { title: "Introduction", href: "/docs" },
       { title: "Installation", href: "/docs/installation" },
       { title: "Quick Start", href: "/docs/quick-start" },
+      { title: "Skills", href: "/docs/skills" },
       { title: "Migration Guide", href: "/docs/migration" },
       { title: "Changelog", href: "/docs/changelog" },
     ],
@@ -31,11 +32,13 @@ export const docsNavigation: NavSection[] = [
       { title: "Visibility", href: "/docs/visibility" },
       { title: "Watchers", href: "/docs/watchers" },
       { title: "Validation", href: "/docs/validation" },
+      { title: "Directives", href: "/docs/directives" },
     ],
   },
   {
     title: "Rendering",
     items: [
+      { title: "Renderers", href: "/docs/renderers" },
       { title: "Registry", href: "/docs/registry" },
       { title: "Streaming", href: "/docs/streaming" },
       { title: "Generation Modes", href: "/docs/generation-modes" },
@@ -43,49 +46,14 @@ export const docsNavigation: NavSection[] = [
   },
   {
     title: "Examples",
-    items: [
-      {
-        title: "Chat",
-        href: "https://github.com/vercel-labs/json-render/tree/main/examples/chat",
-        external: true,
-      },
-      {
-        title: "Dashboard",
-        href: "https://github.com/vercel-labs/json-render/tree/main/examples/dashboard",
-        external: true,
-      },
-      {
-        title: "React Native",
-        href: "https://github.com/vercel-labs/json-render/tree/main/examples/react-native",
-        external: true,
-      },
-      {
-        title: "React PDF",
-        href: "https://github.com/vercel-labs/json-render/tree/main/examples/react-pdf",
-        external: true,
-      },
-      {
-        title: "Remotion",
-        href: "https://github.com/vercel-labs/json-render/tree/main/examples/remotion",
-        external: true,
-      },
-      {
-        title: "Vue",
-        href: "https://github.com/vercel-labs/json-render/tree/main/examples/vue",
-        external: true,
-      },
-      {
-        title: "Renders with Vite (Vue / React)",
-        href: "https://github.com/vercel-labs/json-render/tree/main/examples/vite-renderers",
-        external: true,
-      },
-    ],
+    items: [{ title: "Browse All Examples", href: "/examples" }],
   },
   {
     title: "Guides",
     items: [
       { title: "Custom Schema", href: "/docs/custom-schema" },
       { title: "Code Export", href: "/docs/code-export" },
+      { title: "Devtools", href: "/docs/devtools" },
     ],
   },
   {
@@ -103,12 +71,44 @@ export const docsNavigation: NavSection[] = [
     items: [
       { title: "@json-render/core", href: "/docs/api/core" },
       { title: "@json-render/react", href: "/docs/api/react" },
+      { title: "@json-render/next", href: "/docs/api/next" },
       { title: "@json-render/react-pdf", href: "/docs/api/react-pdf" },
+      { title: "@json-render/react-email", href: "/docs/api/react-email" },
       { title: "@json-render/shadcn", href: "/docs/api/shadcn" },
+      { title: "@json-render/shadcn-svelte", href: "/docs/api/shadcn-svelte" },
       { title: "@json-render/react-native", href: "/docs/api/react-native" },
+      { title: "@json-render/image", href: "/docs/api/image" },
       { title: "@json-render/remotion", href: "/docs/api/remotion" },
+      { title: "@json-render/ink", href: "/docs/api/ink" },
       { title: "@json-render/vue", href: "/docs/api/vue" },
+      { title: "@json-render/svelte", href: "/docs/api/svelte" },
+      { title: "@json-render/solid", href: "/docs/api/solid" },
+      {
+        title: "@json-render/react-three-fiber",
+        href: "/docs/api/react-three-fiber",
+      },
+      { title: "@json-render/directives", href: "/docs/api/directives" },
       { title: "@json-render/codegen", href: "/docs/api/codegen" },
+      { title: "@json-render/devtools", href: "/docs/api/devtools" },
+      {
+        title: "@json-render/devtools-react",
+        href: "/docs/api/devtools-react",
+      },
+      { title: "@json-render/devtools-vue", href: "/docs/api/devtools-vue" },
+      {
+        title: "@json-render/devtools-svelte",
+        href: "/docs/api/devtools-svelte",
+      },
+      {
+        title: "@json-render/devtools-solid",
+        href: "/docs/api/devtools-solid",
+      },
+      { title: "@json-render/mcp", href: "/docs/api/mcp" },
+      { title: "@json-render/redux", href: "/docs/api/redux" },
+      { title: "@json-render/zustand", href: "/docs/api/zustand" },
+      { title: "@json-render/jotai", href: "/docs/api/jotai" },
+      { title: "@json-render/xstate", href: "/docs/api/xstate" },
+      { title: "@json-render/yaml", href: "/docs/api/yaml" },
     ],
   },
 ];

apps/web/lib/examples.ts

@@ -0,0 +1,176 @@
+export type Example = {
+  slug: string;
+  title: string;
+  description: string;
+  tags: string[];
+  githubPath: string;
+  demoUrl?: string;
+};
+
+const GITHUB_BASE =
+  "https://github.com/vercel-labs/json-render/tree/main/examples";
+
+export const examples: Example[] = [
+  {
+    slug: "chat",
+    title: "Chat",
+    description:
+      "AI chat app with tool calling, streaming UI, and rich components powered by the AI SDK.",
+    tags: ["React", "Next.js", "AI"],
+    githubPath: "examples/chat",
+    demoUrl: "https://chat-demo.json-render.dev",
+  },
+  {
+    slug: "dashboard",
+    title: "Dashboard",
+    description:
+      "AI-generated dashboard with drag-and-drop, charts, and real-time data binding.",
+    tags: ["React", "Next.js", "AI"],
+    githubPath: "examples/dashboard",
+    demoUrl: "https://dashboard-demo.json-render.dev",
+  },
+  {
+    slug: "no-ai",
+    title: "No AI",
+    description:
+      "Static specs rendered without any AI — forms, cards, tables, and more from hardcoded JSON.",
+    tags: ["React", "Next.js"],
+    githubPath: "examples/no-ai",
+    demoUrl: "https://no-ai-demo.json-render.dev",
+  },
+  {
+    slug: "svelte",
+    title: "Svelte",
+    description:
+      "Svelte renderer demo with counter, todo list, and two-way data binding.",
+    tags: ["Svelte", "Vite"],
+    githubPath: "examples/svelte",
+    demoUrl: "https://svelte-demo.json-render.dev",
+  },
+  {
+    slug: "svelte-chat",
+    title: "Svelte Chat",
+    description: "AI chat app built with SvelteKit and the Svelte renderer.",
+    tags: ["Svelte", "SvelteKit", "AI"],
+    githubPath: "examples/svelte-chat",
+    demoUrl: "https://json-render-svelte-chat-demo.labs.vercel.dev",
+  },
+  {
+    slug: "vue",
+    title: "Vue",
+    description:
+      "Vue renderer demo with counter, todo list, and two-way data binding.",
+    tags: ["Vue", "Vite"],
+    githubPath: "examples/vue",
+    demoUrl: "https://vue-demo.json-render.dev",
+  },
+  {
+    slug: "solid",
+    title: "Solid",
+    description:
+      "Solid renderer demo with counter, todo list, and two-way data binding.",
+    tags: ["Solid", "Vite"],
+    githubPath: "examples/solid",
+    demoUrl: "https://solid-demo.json-render.dev",
+  },
+  {
+    slug: "vite-renderers",
+    title: "Multi-Framework Renderers",
+    description:
+      "Same spec rendered with React, Vue, Svelte, and Solid side by side — hot-swappable at runtime.",
+    tags: ["React", "Vue", "Svelte", "Solid", "Vite"],
+    githubPath: "examples/vite-renderers",
+  },
+  {
+    slug: "react-email",
+    title: "React Email",
+    description:
+      "Generate HTML and plain-text emails from json-render specs using React Email.",
+    tags: ["React", "Email"],
+    githubPath: "examples/react-email",
+    demoUrl: "https://react-email-demo.json-render.dev",
+  },
+  {
+    slug: "react-pdf",
+    title: "React PDF",
+    description:
+      "Generate PDF documents from json-render specs with @react-pdf/renderer.",
+    tags: ["React", "PDF"],
+    githubPath: "examples/react-pdf",
+    demoUrl: "https://react-pdf-demo.json-render.dev",
+  },
+  {
+    slug: "react-three-fiber",
+    title: "React Three Fiber",
+    description:
+      "3D scenes generated from json-render specs using Three.js and React Three Fiber.",
+    tags: ["React", "3D"],
+    githubPath: "examples/react-three-fiber",
+    demoUrl: "https://react-three-fiber-demo.json-render.dev",
+  },
+  {
+    slug: "gsplat",
+    title: "Gaussian Splatting (experimental)",
+    description:
+      "Experimental standalone gaussian splat viewer using gsplat.js — no Three.js dependency.",
+    tags: ["React", "3D", "Next.js"],
+    githubPath: "examples/gsplat",
+  },
+  {
+    slug: "react-three-fiber-gsplat",
+    title: "R3F + Gaussian Splatting",
+    description:
+      "Gaussian splats composed with 3D primitives and lights in React Three Fiber scenes.",
+    tags: ["React", "3D", "Next.js"],
+    githubPath: "examples/react-three-fiber-gsplat",
+  },
+  {
+    slug: "react-native",
+    title: "React Native",
+    description:
+      "Mobile app rendering json-render specs with Expo and React Native.",
+    tags: ["React Native", "Expo"],
+    githubPath: "examples/react-native",
+  },
+  {
+    slug: "remotion",
+    title: "Remotion",
+    description: "Generate videos from json-render specs using Remotion.",
+    tags: ["React", "Video"],
+    githubPath: "examples/remotion",
+    demoUrl: "https://remotion-demo.json-render.dev",
+  },
+  {
+    slug: "image",
+    title: "Image",
+    description:
+      "Generate OG images and social cards from json-render specs using Satori.",
+    tags: ["React", "Image"],
+    githubPath: "examples/image",
+    demoUrl: "https://image-demo.json-render.dev",
+  },
+  {
+    slug: "ink-chat",
+    title: "Ink Chat",
+    description:
+      "Terminal chat agent that streams rich json-render UIs using Ink and the AI Gateway.",
+    tags: ["Ink", "Terminal", "AI"],
+    githubPath: "examples/ink-chat",
+  },
+  {
+    slug: "mcp",
+    title: "MCP App",
+    description:
+      "MCP server that serves shadcn UIs to Claude, ChatGPT, Cursor, and VS Code.",
+    tags: ["React", "MCP", "Vite"],
+    githubPath: "examples/mcp",
+  },
+];
+
+export const allTags = Array.from(
+  new Set(examples.flatMap((e) => e.tags)),
+).sort();
+
+export function getGitHubUrl(example: Example): string {
+  return `${GITHUB_BASE}/${example.slug}`;
+}

apps/web/lib/github.ts

@@ -0,0 +1,20 @@
+const REPO = "vercel-labs/json-render";
+const REVALIDATE = 86400;
+
+export async function getStarCount(): Promise<string> {
+  try {
+    const res = await fetch(`https://api.github.com/repos/${REPO}`, {
+      headers: { Accept: "application/vnd.github.v3+json" },
+      next: { revalidate: REVALIDATE },
+    });
+    if (!res.ok) return "";
+    const data = await res.json();
+    const count = data.stargazers_count;
+    if (typeof count !== "number") return "";
+    if (count >= 1000)
+      return `${(count / 1000).toFixed(count >= 10000 ? 0 : 1)}k`;
+    return String(count);
+  } catch {
+    return "";
+  }
+}

apps/web/lib/page-titles.ts

@@ -11,6 +11,7 @@ export const PAGE_TITLES: Record<string, string> = {
 
   // Top-level
   playground: "Playground",
+  examples: "Examples",
 
   // Docs
   docs: "Introduction",
@@ -23,10 +24,14 @@ export const PAGE_TITLES: Record<string, string> = {
   "docs/streaming": "Streaming",
   "docs/validation": "Validation",
   "docs/data-binding": "Data Binding",
+  "docs/computed-values": "Computed Values",
   "docs/visibility": "Visibility",
+  "docs/watchers": "Watchers",
+  "docs/renderers": "Renderers",
   "docs/generation-modes": "Generation Modes",
   "docs/code-export": "Code Export",
   "docs/custom-schema": "Custom Schema & Renderer",
+  "docs/devtools": "Devtools",
   "docs/ai-sdk": "AI SDK Integration",
   "docs/adaptive-cards": "Adaptive Cards Integration",
   "docs/openapi": "OpenAPI Integration",
@@ -34,16 +39,38 @@ export const PAGE_TITLES: Record<string, string> = {
   "docs/ag-ui": "AG-UI Integration",
   "docs/migration": "Migration Guide",
   "docs/changelog": "Changelog",
+  "docs/skills": "Skills",
+  "docs/directives": "Directives",
 
   // API references
   "docs/api/core": "@json-render/core API",
   "docs/api/react": "@json-render/react API",
+  "docs/api/next": "@json-render/next API",
   "docs/api/vue": "@json-render/vue API",
+  "docs/api/solid": "@json-render/solid API",
   "docs/api/react-pdf": "@json-render/react-pdf API",
+  "docs/api/react-email": "@json-render/react-email API",
   "docs/api/react-native": "@json-render/react-native API",
+  "docs/api/svelte": "@json-render/svelte API",
+  "docs/api/directives": "@json-render/directives API",
   "docs/api/codegen": "@json-render/codegen API",
+  "docs/api/devtools": "@json-render/devtools API",
+  "docs/api/devtools-react": "@json-render/devtools-react API",
+  "docs/api/devtools-vue": "@json-render/devtools-vue API",
+  "docs/api/devtools-svelte": "@json-render/devtools-svelte API",
+  "docs/api/devtools-solid": "@json-render/devtools-solid API",
+  "docs/api/image": "@json-render/image API",
   "docs/api/remotion": "@json-render/remotion API",
   "docs/api/shadcn": "@json-render/shadcn API",
+  "docs/api/shadcn-svelte": "@json-render/shadcn-svelte API",
+  "docs/api/mcp": "@json-render/mcp API",
+  "docs/api/redux": "@json-render/redux API",
+  "docs/api/zustand": "@json-render/zustand API",
+  "docs/api/jotai": "@json-render/jotai API",
+  "docs/api/react-three-fiber": "@json-render/react-three-fiber API",
+  "docs/api/xstate": "@json-render/xstate API",
+  "docs/api/ink": "@json-render/ink API",
+  "docs/api/yaml": "@json-render/yaml API",
 };
 
 /**

apps/web/lib/render/catalog.ts

@@ -165,7 +165,8 @@ export const playgroundCatalog = defineCatalog(schema, {
           .enum(["body", "caption", "muted", "lead", "code"])
           .nullable(),
       }),
-      description: "Paragraph text",
+      description:
+        'Paragraph text. In repeat scopes, use { "$template": "${field1} ${field2}" } to interpolate item fields.',
       example: { text: "Hello, world!" },
     },
 
@@ -178,6 +179,18 @@ export const playgroundCatalog = defineCatalog(schema, {
       description: "Placeholder image (displays alt text in a styled box)",
     },
 
+    Icon: {
+      props: z.object({
+        name: z.string(),
+        size: z.enum(["sm", "md", "lg"]).nullable(),
+        color: z
+          .enum(["default", "muted", "primary", "success", "warning", "danger"])
+          .nullable(),
+      }),
+      description:
+        "Lucide icon by name. PascalCase: MapPin, Mail, Globe, Calendar, Star, Heart, Check, X, ArrowRight, Phone, Building, Clock, Shield, Zap, Users, Eye, Download, Upload, Search, Filter, Settings, Bell, ChevronRight, ExternalLink, Info, AlertTriangle, CheckCircle, XCircle. Use in horizontal Stacks with Text for icon+label patterns. Never use emoji — always use Icon.",
+    },
+
     Avatar: {
       props: z.object({
         src: z.string().nullable(),
@@ -259,8 +272,32 @@ export const playgroundCatalog = defineCatalog(schema, {
         value: z.number(),
         max: z.number().nullable(),
         label: z.string().nullable(),
+        interactive: z.boolean().nullable(),
       }),
-      description: "Star rating display",
+      events: ["change"],
+      description:
+        "Interactive star rating. Use { $bindState } on value for binding. Set interactive: false for read-only display.",
+      example: { value: 4, max: 5, label: "Rating" },
+    },
+
+    Metric: {
+      props: z.object({
+        label: z.string(),
+        value: z.string(),
+        change: z.string().nullable(),
+        changeType: z.enum(["positive", "negative", "neutral"]).nullable(),
+        prefix: z.string().nullable(),
+        suffix: z.string().nullable(),
+      }),
+      description:
+        "Key metric / stat display. Shows a large value with label and optional change indicator. Use for dashboard KPIs.",
+      example: {
+        label: "Total Revenue",
+        value: "125,000",
+        prefix: "$",
+        change: "+12.5%",
+        changeType: "positive",
+      },
     },
 
     // ── Charts ──────────────────────────────────────────────────────────
@@ -411,11 +448,14 @@ export const playgroundCatalog = defineCatalog(schema, {
     Button: {
       props: z.object({
         label: z.string(),
-        variant: z.enum(["primary", "secondary", "danger"]).nullable(),
+        variant: z
+          .enum(["primary", "secondary", "outline", "danger"])
+          .nullable(),
         disabled: z.boolean().nullable(),
       }),
       events: ["press"],
-      description: "Clickable button. Bind on.press for handler.",
+      description:
+        "Clickable button. primary = solid fill, outline = bordered/transparent, secondary = muted fill. Bind on.press for handler.",
       example: { label: "Submit", variant: "primary" },
     },
 

apps/web/lib/render/registry.tsx

@@ -105,6 +105,7 @@ import {
   TooltipProvider,
   TooltipTrigger,
 } from "@/components/ui/tooltip";
+import { icons as lucideIcons } from "lucide-react";
 
 // =============================================================================
 // Registry — components + actions, types inferred from catalog
@@ -127,23 +128,25 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
 
       return (
         <div
-          className={`border border-border rounded-lg p-4 bg-card text-card-foreground overflow-hidden ${maxWidthClass} ${centeredClass}`}
+          className={`border border-border rounded-xl p-5 bg-card text-card-foreground shadow-sm overflow-hidden h-full flex flex-col ${maxWidthClass} ${centeredClass}`}
         >
           {(props.title || props.description) && (
             <div className="mb-4">
               {props.title && (
-                <h3 className="font-semibold text-lg text-left">
+                <h3 className="font-semibold text-lg tracking-tight">
                   {props.title}
                 </h3>
               )}
               {props.description && (
-                <p className="text-sm text-muted-foreground mt-1 text-left">
+                <p className="text-sm text-muted-foreground mt-1">
                   {props.description}
                 </p>
               )}
             </div>
           )}
-          <div className="space-y-3">{children}</div>
+          <div className="flex-1 flex flex-col gap-4 [&>:last-child]:mt-auto">
+            {children}
+          </div>
         </div>
       );
     },
@@ -160,14 +163,31 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
               : props.gap === "none"
                 ? "gap-0"
                 : "gap-3";
-      const alignClass =
-        props.align === "center"
-          ? "items-center"
-          : props.align === "end"
-            ? "items-end"
-            : props.align === "stretch"
-              ? "items-stretch"
-              : "items-start";
+
+      let alignClass: string;
+      if (isHorizontal) {
+        alignClass =
+          props.align === "center"
+            ? "items-center"
+            : props.align === "end"
+              ? "items-end"
+              : props.align === "stretch"
+                ? "items-stretch"
+                : "items-start";
+      } else {
+        // Vertical: items-center/end lets inline elements (Avatar, Badge, Button)
+        // center/align naturally. Block containers (Grid, Accordion, Table) add
+        // their own w-full to stretch regardless.
+        alignClass =
+          props.align === "center"
+            ? "items-center"
+            : props.align === "end"
+              ? "items-end"
+              : props.align === "start"
+                ? "items-start"
+                : "items-stretch";
+      }
+
       const justifyClass =
         props.justify === "center"
           ? "justify-center"
@@ -181,7 +201,7 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
 
       return (
         <div
-          className={`flex ${isHorizontal ? "flex-row flex-wrap" : "flex-col"} ${gapClass} ${alignClass} ${justifyClass}`}
+          className={`flex ${isHorizontal ? "flex-row flex-wrap" : "flex-col w-full"} ${gapClass} ${alignClass} ${justifyClass}`}
         >
           {children}
         </div>
@@ -189,7 +209,12 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
     },
 
     Grid: ({ props, children }) => {
-      const n = props.columns ?? 1;
+      const childCount = Array.isArray(children)
+        ? children.length
+        : children
+          ? 1
+          : 0;
+      const n = Math.min(props.columns ?? 1, childCount || 1);
       const cols =
         n >= 6
           ? "grid-cols-6"
@@ -205,13 +230,15 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       const gridGap =
         props.gap === "lg" ? "gap-4" : props.gap === "sm" ? "gap-2" : "gap-3";
 
-      return <div className={`grid ${cols} ${gridGap}`}>{children}</div>;
+      return <div className={`grid w-full ${cols} ${gridGap}`}>{children}</div>;
     },
 
     Separator: ({ props }) => (
       <Separator
         orientation={props.orientation ?? "horizontal"}
-        className={props.orientation === "vertical" ? "h-full mx-2" : "my-3"}
+        className={
+          props.orientation === "vertical" ? "h-full mx-3" : "my-4 opacity-50"
+        }
       />
     ),
 
@@ -383,7 +410,7 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       });
 
       return (
-        <div className="rounded-md border border-border overflow-hidden">
+        <div className="w-full rounded-md border border-border overflow-hidden">
           <TablePrimitive>
             {props.caption && <TableCaption>{props.caption}</TableCaption>}
             <TableHeader>
@@ -411,20 +438,17 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       const level = props.level ?? "h2";
       const headingClass =
         level === "h1"
-          ? "text-2xl font-bold"
+          ? "text-2xl font-bold tracking-tight"
           : level === "h3"
-            ? "text-base font-semibold"
+            ? "text-base font-semibold tracking-tight"
             : level === "h4"
-              ? "text-sm font-semibold"
-              : "text-lg font-semibold";
+              ? "text-sm font-medium uppercase tracking-wider text-muted-foreground"
+              : "text-xl font-semibold tracking-tight";
 
-      if (level === "h1")
-        return <h1 className={`${headingClass} text-left`}>{props.text}</h1>;
-      if (level === "h3")
-        return <h3 className={`${headingClass} text-left`}>{props.text}</h3>;
-      if (level === "h4")
-        return <h4 className={`${headingClass} text-left`}>{props.text}</h4>;
-      return <h2 className={`${headingClass} text-left`}>{props.text}</h2>;
+      if (level === "h1") return <h1 className={headingClass}>{props.text}</h1>;
+      if (level === "h3") return <h3 className={headingClass}>{props.text}</h3>;
+      if (level === "h4") return <h4 className={headingClass}>{props.text}</h4>;
+      return <h2 className={headingClass}>{props.text}</h2>;
     },
 
     Text: ({ props }) => {
@@ -440,20 +464,59 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
                 : "text-sm";
 
       if (props.variant === "code") {
-        return <code className={`${textClass} text-left`}>{props.text}</code>;
+        return <code className={textClass}>{props.text}</code>;
       }
-      return <p className={`${textClass} text-left`}>{props.text}</p>;
+      return <p className={textClass}>{props.text}</p>;
     },
 
     Image: ({ props }) => (
       <div
-        className="bg-muted border border-border rounded flex items-center justify-center text-xs text-muted-foreground aspect-video"
-        style={{ width: props.width ?? 80, height: props.height ?? 60 }}
+        className="w-full bg-muted/50 border border-dashed border-border rounded-lg flex flex-col items-center justify-center gap-2 text-muted-foreground/60 px-4"
+        style={{
+          maxWidth: props.width ?? undefined,
+          height: props.height ?? 120,
+          minHeight: 80,
+        }}
       >
-        {props.alt || "img"}
+        <svg
+          width="32"
+          height="32"
+          viewBox="0 0 24 24"
+          fill="none"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+          className="opacity-50"
+        >
+          <rect width="18" height="18" x="3" y="3" rx="2" ry="2" />
+          <circle cx="9" cy="9" r="2" />
+          <path d="m21 15-3.086-3.086a2 2 0 0 0-2.828 0L6 21" />
+        </svg>
+        {props.alt && <span className="text-xs">{props.alt}</span>}
       </div>
     ),
 
+    Icon: ({ props }) => {
+      const IconComponent = lucideIcons[props.name as keyof typeof lucideIcons];
+      if (!IconComponent) return null;
+      const sizeMap = { sm: 16, md: 20, lg: 24 } as const;
+      const px = sizeMap[props.size ?? "md"] ?? 20;
+      const colorClass =
+        props.color === "muted"
+          ? "text-muted-foreground"
+          : props.color === "primary"
+            ? "text-primary"
+            : props.color === "success"
+              ? "text-green-600 dark:text-green-400"
+              : props.color === "warning"
+                ? "text-yellow-600 dark:text-yellow-400"
+                : props.color === "danger"
+                  ? "text-red-600 dark:text-red-400"
+                  : "";
+      return <IconComponent size={px} className={`shrink-0 ${colorClass}`} />;
+    },
+
     Avatar: ({ props }) => {
       const name = props.name || "?";
       const initials = name
@@ -462,16 +525,16 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
         .join("")
         .slice(0, 2)
         .toUpperCase();
-      const avatarSize =
+      const sizeStyles =
         props.size === "lg"
-          ? "w-12 h-12 text-base"
+          ? { outer: "w-[72px] h-[72px]", text: "text-xl", ring: "ring-[3px]" }
           : props.size === "sm"
-            ? "w-8 h-8 text-xs"
-            : "w-10 h-10 text-sm";
+            ? { outer: "w-8 h-8", text: "text-xs", ring: "ring-2" }
+            : { outer: "w-10 h-10", text: "text-sm", ring: "ring-2" };
 
       return (
         <div
-          className={`${avatarSize} rounded-full bg-muted flex items-center justify-center font-medium`}
+          className={`${sizeStyles.outer} ${sizeStyles.text} rounded-full bg-gradient-to-br from-muted-foreground/20 to-muted flex items-center justify-center font-semibold tracking-wide ${sizeStyles.ring} ring-background shadow-sm`}
         >
           {initials}
         </div>
@@ -491,9 +554,20 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
           : props.variant === "warning"
             ? "bg-yellow-100 text-yellow-800 dark:bg-yellow-900 dark:text-yellow-100"
             : "";
+      const dotColor =
+        props.variant === "success"
+          ? "bg-green-500"
+          : props.variant === "warning"
+            ? "bg-yellow-500"
+            : props.variant === "danger"
+              ? "bg-red-500"
+              : "";
 
       return (
-        <Badge variant={variant} className={customClass}>
+        <Badge variant={variant} className={`${customClass} gap-1.5`}>
+          {dotColor && (
+            <span className={`w-1.5 h-1.5 rounded-full ${dotColor} shrink-0`} />
+          )}
           {props.text}
         </Badge>
       );
@@ -510,8 +584,47 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
               ? "border-blue-200 bg-blue-50 text-blue-900 dark:border-blue-800 dark:bg-blue-950 dark:text-blue-100"
               : "";
 
+      const iconProps = {
+        width: 16,
+        height: 16,
+        viewBox: "0 0 24 24",
+        fill: "none",
+        stroke: "currentColor",
+        strokeWidth: 2,
+        strokeLinecap: "round" as const,
+        strokeLinejoin: "round" as const,
+        className: "shrink-0",
+      };
+
+      const icon =
+        props.type === "success" ? (
+          <svg {...iconProps}>
+            <path d="M22 11.08V12a10 10 0 1 1-5.93-9.14" />
+            <polyline points="22 4 12 14.01 9 11.01" />
+          </svg>
+        ) : props.type === "warning" ? (
+          <svg {...iconProps}>
+            <path d="m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3Z" />
+            <line x1="12" y1="9" x2="12" y2="13" />
+            <line x1="12" y1="17" x2="12.01" y2="17" />
+          </svg>
+        ) : props.type === "error" ? (
+          <svg {...iconProps}>
+            <circle cx="12" cy="12" r="10" />
+            <line x1="15" y1="9" x2="9" y2="15" />
+            <line x1="9" y1="9" x2="15" y2="15" />
+          </svg>
+        ) : (
+          <svg {...iconProps}>
+            <circle cx="12" cy="12" r="10" />
+            <line x1="12" y1="16" x2="12" y2="12" />
+            <line x1="12" y1="8" x2="12.01" y2="8" />
+          </svg>
+        );
+
       return (
         <Alert variant={variant} className={customClass}>
+          {icon}
           <AlertTitle>{props.title}</AlertTitle>
           {props.message && (
             <AlertDescription>{props.message}</AlertDescription>
@@ -523,7 +636,7 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
     Progress: ({ props }) => {
       const value = Math.min(100, Math.max(0, props.value || 0));
       return (
-        <div className="space-y-2">
+        <div className="w-full space-y-2">
           {props.label && (
             <Label className="text-sm text-muted-foreground">
               {props.label}
@@ -607,9 +720,19 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       </PopoverPrimitive>
     ),
 
-    Rating: ({ props }) => {
-      const ratingValue = props.value || 0;
+    Rating: ({ props, bindings, emit }) => {
+      const [boundValue, setBoundValue] = useBoundProp<number>(
+        props.value as number | undefined,
+        bindings?.value,
+      );
+      const [localValue, setLocalValue] = useState(props.value || 0);
+      const isBound = !!bindings?.value;
+      const ratingValue = isBound ? (boundValue ?? 0) : localValue;
+      const setValue = isBound ? setBoundValue : setLocalValue;
       const maxRating = props.max ?? 5;
+      const interactive = props.interactive !== false;
+      const [hoverIndex, setHoverIndex] = useState(-1);
+
       return (
         <div className="space-y-2">
           {props.label && (
@@ -617,15 +740,78 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
               {props.label}
             </Label>
           )}
-          <div className="flex gap-1">
-            {Array.from({ length: maxRating }).map((_, i) => (
-              <span
-                key={i}
-                className={`text-lg ${i < ratingValue ? "text-yellow-400" : "text-muted"}`}
-              >
-                *
+          <div
+            className="flex gap-0.5"
+            onMouseLeave={() => interactive && setHoverIndex(-1)}
+          >
+            {Array.from({ length: maxRating }).map((_, i) => {
+              const filled =
+                hoverIndex >= 0 ? i <= hoverIndex : i < ratingValue;
+              return (
+                <button
+                  key={i}
+                  type="button"
+                  className={`p-0.5 transition-colors ${interactive ? "cursor-pointer hover:scale-110" : "cursor-default"}`}
+                  onMouseEnter={() => interactive && setHoverIndex(i)}
+                  onClick={() => {
+                    if (!interactive) return;
+                    const newVal = i + 1 === ratingValue ? 0 : i + 1;
+                    setValue(newVal);
+                    emit("change");
+                  }}
+                >
+                  <svg
+                    width="20"
+                    height="20"
+                    viewBox="0 0 24 24"
+                    fill={filled ? "currentColor" : "none"}
+                    stroke="currentColor"
+                    strokeWidth="1.5"
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    className={
+                      filled ? "text-yellow-400" : "text-muted-foreground/40"
+                    }
+                  >
+                    <polygon points="12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2" />
+                  </svg>
+                </button>
+              );
+            })}
+          </div>
+        </div>
+      );
+    },
+
+    Metric: ({ props }) => {
+      const changeColor =
+        props.changeType === "positive"
+          ? "text-green-600 dark:text-green-400"
+          : props.changeType === "negative"
+            ? "text-red-600 dark:text-red-400"
+            : "text-muted-foreground";
+      const changeIcon =
+        props.changeType === "positive"
+          ? "\u2191"
+          : props.changeType === "negative"
+            ? "\u2193"
+            : "";
+
+      return (
+        <div className="space-y-1">
+          <div className="text-sm text-muted-foreground">{props.label}</div>
+          <div className="flex items-baseline gap-1.5">
+            <span className="text-2xl font-semibold tracking-tight tabular-nums">
+              {props.prefix}
+              {props.value}
+              {props.suffix}
+            </span>
+            {props.change && (
+              <span className={`text-sm font-medium ${changeColor}`}>
+                {changeIcon}
+                {props.change}
               </span>
-            ))}
+            )}
           </div>
         </div>
       );
@@ -636,26 +822,39 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
     BarGraph: ({ props }) => {
       const data = props.data || [];
       const maxValue = Math.max(...data.map((d) => d.value), 1);
+      const barColors = [
+        "bg-primary",
+        "bg-primary/80",
+        "bg-primary/60",
+        "bg-primary/70",
+        "bg-primary/90",
+        "bg-primary/50",
+      ];
 
       return (
-        <div className="space-y-2">
+        <div className="space-y-3">
           {props.title && (
-            <div className="text-sm font-medium text-left">{props.title}</div>
+            <div className="text-sm font-medium">{props.title}</div>
           )}
-          <div className="flex gap-2">
+          <div className="flex items-end gap-2" style={{ height: 160 }}>
             {data.map((d, i) => (
-              <div key={i} className="flex-1 flex flex-col items-center gap-1">
-                <div className="text-xs text-muted-foreground">{d.value}</div>
-                <div className="w-full h-24 flex items-end">
+              <div
+                key={i}
+                className="flex-1 flex flex-col items-center gap-1.5 h-full justify-end group"
+              >
+                <div className="text-[11px] font-medium text-muted-foreground tabular-nums">
+                  {d.value}
+                </div>
+                <div className="w-full flex-1 flex items-end">
                   <div
-                    className="w-full bg-primary rounded-t transition-all"
+                    className={`w-full ${barColors[i % barColors.length]} rounded-t-md transition-all group-hover:opacity-80`}
                     style={{
                       height: `${(d.value / maxValue) * 100}%`,
-                      minHeight: 2,
+                      minHeight: 4,
                     }}
                   />
                 </div>
-                <div className="text-xs text-muted-foreground truncate w-full text-center">
+                <div className="text-[11px] text-muted-foreground truncate w-full text-center">
                   {d.label}
                 </div>
               </div>
@@ -672,8 +871,8 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       const range = maxValue - minValue || 1;
 
       const width = 300;
-      const height = 100;
-      const padding = { top: 10, right: 10, bottom: 10, left: 10 };
+      const height = 140;
+      const padding = { top: 12, right: 12, bottom: 12, left: 12 };
       const chartWidth = width - padding.left - padding.right;
       const chartHeight = height - padding.top - padding.bottom;
 
@@ -690,77 +889,107 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
         return { x, y, ...d };
       });
 
-      const pathD =
-        points.length > 0
-          ? `M ${points.map((p) => `${p.x} ${p.y}`).join(" L ")}`
-          : "";
+      // Build smooth cubic bezier curve through points
+      let smoothPath = "";
+      let areaPath = "";
+      if (points.length > 1) {
+        const first = points[0]!;
+        const last = points[points.length - 1]!;
+        smoothPath = `M ${first.x} ${first.y}`;
+        for (let i = 0; i < points.length - 1; i++) {
+          const curr = points[i]!;
+          const next = points[i + 1]!;
+          const cpx = (curr.x + next.x) / 2;
+          smoothPath += ` C ${cpx} ${curr.y}, ${cpx} ${next.y}, ${next.x} ${next.y}`;
+        }
+        const bottomY = height - padding.bottom;
+        areaPath = `${smoothPath} L ${last.x} ${bottomY} L ${first.x} ${bottomY} Z`;
+      } else if (points.length === 1) {
+        const only = points[0]!;
+        smoothPath = `M ${only.x} ${only.y}`;
+      }
+
+      const gradientId = `line-gradient-${Math.random().toString(36).slice(2, 8)}`;
 
       return (
-        <div className="space-y-2">
+        <div className="space-y-3">
           {props.title && (
-            <div className="text-sm font-medium text-left">{props.title}</div>
+            <div className="text-sm font-medium">{props.title}</div>
           )}
-          <div className="relative h-28">
-            <svg viewBox={`0 0 ${width} ${height}`} className="w-full h-full">
-              <line
-                x1={padding.left}
-                y1={padding.top + chartHeight / 2}
-                x2={width - padding.right}
-                y2={padding.top + chartHeight / 2}
-                stroke="currentColor"
-                strokeOpacity="0.1"
-                strokeWidth="1"
-              />
-              <line
-                x1={padding.left}
-                y1={padding.top}
-                x2={width - padding.right}
-                y2={padding.top}
-                stroke="currentColor"
-                strokeOpacity="0.1"
-                strokeWidth="1"
-              />
-              <line
-                x1={padding.left}
-                y1={height - padding.bottom}
-                x2={width - padding.right}
-                y2={height - padding.bottom}
-                stroke="currentColor"
-                strokeOpacity="0.1"
-                strokeWidth="1"
-              />
-              {pathD && (
+          <div className="relative" style={{ height: 160 }}>
+            <svg
+              viewBox={`0 0 ${width} ${height}`}
+              className="w-full h-full"
+              preserveAspectRatio="none"
+            >
+              <defs>
+                <linearGradient id={gradientId} x1="0" y1="0" x2="0" y2="1">
+                  <stop
+                    offset="0%"
+                    stopColor="currentColor"
+                    stopOpacity="0.15"
+                  />
+                  <stop
+                    offset="100%"
+                    stopColor="currentColor"
+                    stopOpacity="0"
+                  />
+                </linearGradient>
+              </defs>
+              {[0, 0.25, 0.5, 0.75, 1].map((frac) => (
+                <line
+                  key={frac}
+                  x1={padding.left}
+                  y1={padding.top + chartHeight * frac}
+                  x2={width - padding.right}
+                  y2={padding.top + chartHeight * frac}
+                  stroke="currentColor"
+                  strokeOpacity="0.07"
+                  vectorEffect="non-scaling-stroke"
+                  strokeWidth="1"
+                />
+              ))}
+              {areaPath && (
                 <path
-                  d={pathD}
+                  d={areaPath}
+                  fill={`url(#${gradientId})`}
+                  className="text-primary"
+                />
+              )}
+              {smoothPath && (
+                <path
+                  d={smoothPath}
                   fill="none"
                   stroke="currentColor"
                   strokeWidth="2"
                   strokeLinecap="round"
                   strokeLinejoin="round"
+                  vectorEffect="non-scaling-stroke"
                   className="text-primary"
                 />
               )}
-              {points.map((p, i) => (
-                <circle
-                  key={i}
-                  cx={p.x}
-                  cy={p.y}
-                  r="4"
-                  className="fill-primary"
-                />
-              ))}
             </svg>
+            {points.map((p, i) => (
+              <div
+                key={i}
+                className="absolute w-[7px] h-[7px] rounded-full bg-primary -translate-x-1/2 -translate-y-1/2"
+                style={{
+                  left: `${(p.x / width) * 100}%`,
+                  top: `${(p.y / height) * 100}%`,
+                }}
+              />
+            ))}
           </div>
-          {data.length > 0 && (
-            <div className="flex justify-between">
-              {data.map((d, i) => (
-                <div
+          {points.length > 0 && (
+            <div className="relative h-4">
+              {points.map((p, i) => (
+                <span
                   key={i}
-                  className="text-xs text-muted-foreground text-center"
-                  style={{ width: `${100 / data.length}%` }}
+                  className="absolute text-[11px] text-muted-foreground -translate-x-1/2"
+                  style={{ left: `${(p.x / width) * 100}%` }}
                 >
-                  {d.label}
-                </div>
+                  {data[i]?.label}
+                </span>
               ))}
             </div>
           )}
@@ -787,7 +1016,7 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       );
 
       return (
-        <div className="space-y-2">
+        <div className="w-full space-y-2">
           {props.label && <Label htmlFor={props.name}>{props.label}</Label>}
           <Input
             id={props.name}
@@ -829,7 +1058,7 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       );
 
       return (
-        <div className="space-y-2">
+        <div className="w-full space-y-2">
           {props.label && <Label htmlFor={props.name}>{props.label}</Label>}
           <Textarea
             id={props.name}
@@ -872,7 +1101,7 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       );
 
       return (
-        <div className="space-y-2">
+        <div className="w-full space-y-2">
           <Label>{props.label}</Label>
           <Select
             value={value}
@@ -945,7 +1174,7 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       const setValue = isBound ? setBoundValue : setLocalValue;
 
       return (
-        <div className="space-y-2">
+        <div className="w-full space-y-2">
           {props.label && <Label>{props.label}</Label>}
           <RadioGroup
             value={value}
@@ -987,7 +1216,7 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       const setChecked = isBound ? setBoundChecked : setLocalChecked;
 
       return (
-        <div className="flex items-center justify-between space-x-2">
+        <div className="w-full flex items-center justify-between space-x-2">
           <Label htmlFor={props.name} className="cursor-pointer">
             {props.label}
           </Label>
@@ -1014,7 +1243,7 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       const setValue = isBound ? setBoundValue : setLocalValue;
 
       return (
-        <div className="space-y-2">
+        <div className="w-full space-y-2">
           {props.label && (
             <div className="flex justify-between">
               <Label className="text-sm">{props.label}</Label>
@@ -1041,9 +1270,11 @@ export const { registry, executeAction } = defineRegistry(playgroundCatalog, {
       const variant =
         props.variant === "danger"
           ? "destructive"
-          : props.variant === "secondary"
-            ? "secondary"
-            : "default";
+          : props.variant === "outline"
+            ? "outline"
+            : props.variant === "secondary"
+              ? "secondary"
+              : "default";
 
       return (
         <Button

apps/web/lib/render/renderer.tsx

@@ -11,8 +11,11 @@ import {
   ValidationProvider,
   useValidation,
 } from "@json-render/react";
+import { JsonRenderDevtools } from "@json-render/devtools-react";
+import type { Catalog } from "@json-render/core";
 
 import { registry, Fallback } from "./registry";
+import { playgroundCatalog } from "./catalog";
 
 // =============================================================================
 // PlaygroundRenderer
@@ -22,6 +25,8 @@ interface PlaygroundRendererProps {
   spec: Spec | null;
   data?: Record<string, unknown>;
   loading?: boolean;
+  /** Show the json-render devtools panel. Default: false. */
+  devtools?: boolean;
 }
 
 const fallbackRenderer = (renderProps: { element: { type: string } }) => (
@@ -72,6 +77,7 @@ export function PlaygroundRenderer({
   spec,
   data,
   loading,
+  devtools,
 }: PlaygroundRendererProps): ReactNode {
   if (!spec) return null;
 
@@ -86,6 +92,12 @@ export function PlaygroundRenderer({
               fallback={fallbackRenderer}
               loading={loading}
             />
+            {devtools ? (
+              <JsonRenderDevtools
+                spec={spec}
+                catalog={playgroundCatalog as unknown as Catalog}
+              />
+            ) : null}
           </ValidatedActions>
         </ValidationProvider>
       </VisibilityProvider>

apps/web/lib/search-index.ts

@@ -0,0 +1,76 @@
+import { readFile } from "fs/promises";
+import { join } from "path";
+import { docsNavigation } from "./docs-navigation";
+import { mdxToCleanMarkdown } from "./mdx-to-markdown";
+
+export type IndexEntry = {
+  title: string;
+  href: string;
+  section: string;
+  content: string;
+};
+
+let cached: IndexEntry[] | null = null;
+
+function stripMarkdown(md: string): string {
+  return (
+    md
+      // Remove fenced code blocks entirely
+      .replace(/```[\s\S]*?```/g, "")
+      // Remove inline code
+      .replace(/`[^`]+`/g, "")
+      // Remove markdown links, keep text
+      .replace(/\[([^\]]+)\]\([^)]+\)/g, "$1")
+      // Remove heading markers
+      .replace(/^#{1,6}\s+/gm, "")
+      // Remove bold/italic markers
+      .replace(/\*{1,3}([^*]+)\*{1,3}/g, "$1")
+      // Remove HTML tags
+      .replace(/<[^>]+>/g, "")
+      // Collapse whitespace
+      .replace(/\n{3,}/g, "\n\n")
+      .trim()
+  );
+}
+
+function mdxFileForSlug(slug: string): string {
+  const docsRoot = join(process.cwd(), "app", "(main)", "docs");
+  if (slug === "/docs") {
+    return join(docsRoot, "page.mdx");
+  }
+  const rest = slug.replace(/^\/docs\/?/, "");
+  return join(docsRoot, ...rest.split("/"), "page.mdx");
+}
+
+export async function getSearchIndex(): Promise<IndexEntry[]> {
+  if (cached) return cached;
+
+  const entries: IndexEntry[] = [];
+
+  for (const section of docsNavigation) {
+    for (const item of section.items) {
+      if (item.external) continue;
+      try {
+        const raw = await readFile(mdxFileForSlug(item.href), "utf-8");
+        const md = mdxToCleanMarkdown(raw);
+        const content = stripMarkdown(md);
+        entries.push({
+          title: item.title,
+          href: item.href,
+          section: section.title,
+          content,
+        });
+      } catch {
+        entries.push({
+          title: item.title,
+          href: item.href,
+          section: section.title,
+          content: "",
+        });
+      }
+    }
+  }
+
+  cached = entries;
+  return entries;
+}

apps/web/lib/spec-patch.ts

@@ -0,0 +1,155 @@
+import type { Spec, JsonPatch } from "@json-render/core";
+import { setByPath, getByPath, removeByPath } from "@json-render/core";
+
+export function setSpecValue(
+  newSpec: Spec,
+  path: string,
+  value: unknown,
+): void {
+  if (path === "/root") {
+    newSpec.root = value as string;
+    return;
+  }
+  if (path === "/state") {
+    newSpec.state = value as Record<string, unknown>;
+    return;
+  }
+  if (path.startsWith("/state/")) {
+    if (!newSpec.state) newSpec.state = {};
+    setByPath(
+      newSpec.state as Record<string, unknown>,
+      path.slice("/state".length),
+      value,
+    );
+    return;
+  }
+  if (path.startsWith("/elements/")) {
+    const pathParts = path.slice("/elements/".length).split("/");
+    const elementKey = pathParts[0];
+    if (!elementKey) return;
+    if (pathParts.length === 1) {
+      if (value == null || typeof value !== "object") return;
+      const el = value as Record<string, unknown>;
+      newSpec.elements[elementKey] = {
+        ...el,
+        type: typeof el.type === "string" ? el.type : "",
+        props: el.props != null && typeof el.props === "object" ? el.props : {},
+        children: Array.isArray(el.children) ? el.children : [],
+      } as Spec["elements"][string];
+    } else {
+      const element = newSpec.elements[elementKey];
+      if (element) {
+        const newElement = { ...element };
+        setByPath(
+          newElement as unknown as Record<string, unknown>,
+          "/" + pathParts.slice(1).join("/"),
+          value,
+        );
+        newSpec.elements[elementKey] = newElement;
+      }
+    }
+  }
+}
+
+export function removeSpecValue(newSpec: Spec, path: string): void {
+  if (path === "/state") {
+    delete newSpec.state;
+    return;
+  }
+  if (path.startsWith("/state/") && newSpec.state) {
+    removeByPath(
+      newSpec.state as Record<string, unknown>,
+      path.slice("/state".length),
+    );
+    return;
+  }
+  if (path.startsWith("/elements/")) {
+    const pathParts = path.slice("/elements/".length).split("/");
+    const elementKey = pathParts[0];
+    if (!elementKey) return;
+    if (pathParts.length === 1) {
+      delete newSpec.elements[elementKey];
+    } else {
+      const element = newSpec.elements[elementKey];
+      if (element) {
+        const newElement = { ...element };
+        removeByPath(
+          newElement as unknown as Record<string, unknown>,
+          "/" + pathParts.slice(1).join("/"),
+        );
+        newSpec.elements[elementKey] = newElement;
+      }
+    }
+  }
+}
+
+export function getSpecValue(spec: Spec, path: string): unknown {
+  if (path === "/root") return spec.root;
+  if (path === "/state") return spec.state;
+  if (path.startsWith("/state/") && spec.state) {
+    return getByPath(
+      spec.state as Record<string, unknown>,
+      path.slice("/state".length),
+    );
+  }
+  return getByPath(spec as unknown as Record<string, unknown>, path);
+}
+
+export function normalizeSpec(spec: Spec): void {
+  if (
+    spec.state === null ||
+    (spec.state !== undefined && typeof spec.state !== "object")
+  ) {
+    spec.state = undefined;
+  }
+
+  for (const key of Object.keys(spec.elements)) {
+    const el = spec.elements[key];
+    if (!el || typeof el !== "object") {
+      delete spec.elements[key];
+      continue;
+    }
+    if (el.props == null || typeof el.props !== "object") {
+      spec.elements[key] = { ...el, props: {} } as Spec["elements"][string];
+    }
+    if (!Array.isArray(spec.elements[key]!.children)) {
+      spec.elements[key] = {
+        ...spec.elements[key]!,
+        children: [],
+      } as Spec["elements"][string];
+    }
+  }
+}
+
+export function applySpecPatch(spec: Spec, patch: JsonPatch): Spec {
+  const newSpec = {
+    ...spec,
+    elements: { ...spec.elements },
+    ...(spec.state ? { state: { ...spec.state } } : {}),
+  };
+  switch (patch.op) {
+    case "add":
+    case "replace":
+      setSpecValue(newSpec, patch.path, patch.value);
+      break;
+    case "remove":
+      removeSpecValue(newSpec, patch.path);
+      break;
+    case "move":
+      if (patch.from) {
+        const moveValue = getSpecValue(newSpec, patch.from);
+        removeSpecValue(newSpec, patch.from);
+        setSpecValue(newSpec, patch.path, moveValue);
+      }
+      break;
+    case "copy":
+      if (patch.from) {
+        setSpecValue(newSpec, patch.path, getSpecValue(newSpec, patch.from));
+      }
+      break;
+    case "test":
+      break;
+  }
+  normalizeSpec(newSpec);
+  return newSpec;
+}

apps/web/lib/use-playground-stream.ts

@@ -0,0 +1,482 @@
+"use client";
+
+import { useState, useCallback, useRef, useEffect } from "react";
+import type { Spec, JsonPatch, EditMode } from "@json-render/core";
+import { deepMergeSpec, diffToPatches } from "@json-render/core";
+import { parse as yamlParse, stringify as yamlStringify } from "yaml";
+import { applyPatch as applyUnifiedDiff } from "diff";
+import {
+  createYamlStreamCompiler,
+  YAML_SPEC_FENCE,
+  YAML_EDIT_FENCE,
+  YAML_PATCH_FENCE,
+  DIFF_FENCE,
+  FENCE_CLOSE,
+} from "@json-render/yaml";
+import { applySpecPatch } from "./spec-patch";
+
+export type StreamFormat = "jsonl" | "yaml";
+
+export interface TokenUsage {
+  promptTokens: number;
+  completionTokens: number;
+  totalTokens: number;
+  cachedTokens: number;
+  cacheWriteTokens: number;
+}
+
+export interface UsePlaygroundStreamOptions {
+  api: string;
+  format: StreamFormat;
+  editModes?: EditMode[];
+  onError?: (error: Error) => void;
+  onComplete?: (spec: Spec) => void;
+}
+
+export interface UsePlaygroundStreamReturn {
+  spec: Spec | null;
+  isStreaming: boolean;
+  error: Error | null;
+  usage: TokenUsage | null;
+  rawLines: string[];
+  send: (prompt: string, context?: Record<string, unknown>) => Promise<void>;
+  clear: () => void;
+}
+
+// ── JSONL helpers ──
+
+type ParsedLine =
+  | { type: "patch"; patch: JsonPatch }
+  | { type: "usage"; usage: TokenUsage }
+  | { type: "json-edit"; mergeObj: Record<string, unknown> }
+  | null;
+
+function parseLine(line: string): ParsedLine {
+  try {
+    const trimmed = line.trim();
+    if (!trimmed || trimmed.startsWith("//")) return null;
+    const parsed = JSON.parse(trimmed);
+    if (parsed.__meta === "usage") {
+      return {
+        type: "usage",
+        usage: {
+          promptTokens: parsed.promptTokens ?? 0,
+          completionTokens: parsed.completionTokens ?? 0,
+          totalTokens: parsed.totalTokens ?? 0,
+          cachedTokens: parsed.cachedTokens ?? 0,
+          cacheWriteTokens: parsed.cacheWriteTokens ?? 0,
+        },
+      };
+    }
+    if (parsed.__json_edit === true) {
+      const mergeObj = { ...parsed };
+      delete mergeObj.__json_edit;
+      return { type: "json-edit", mergeObj };
+    }
+    return { type: "patch", patch: parsed as JsonPatch };
+  } catch {
+    return null;
+  }
+}
+
+type FenceState = "outside" | "yaml-spec" | "yaml-edit" | "yaml-patch" | "diff";
+
+// ── Hook ──
+
+export function usePlaygroundStream({
+  api,
+  format,
+  editModes,
+  onError,
+  onComplete,
+}: UsePlaygroundStreamOptions): UsePlaygroundStreamReturn {
+  const [spec, setSpec] = useState<Spec | null>(null);
+  const [isStreaming, setIsStreaming] = useState(false);
+  const [error, setError] = useState<Error | null>(null);
+  const [usage, setUsage] = useState<TokenUsage | null>(null);
+  const [rawLines, setRawLines] = useState<string[]>([]);
+  const rawLinesRef = useRef<string[]>([]);
+  const abortControllerRef = useRef<AbortController | null>(null);
+
+  const onCompleteRef = useRef(onComplete);
+  onCompleteRef.current = onComplete;
+  const onErrorRef = useRef(onError);
+  onErrorRef.current = onError;
+  const formatRef = useRef(format);
+  formatRef.current = format;
+  const editModesRef = useRef(editModes);
+  editModesRef.current = editModes;
+
+  const clear = useCallback(() => {
+    setSpec(null);
+    setError(null);
+  }, []);
+
+  const send = useCallback(
+    async (prompt: string, context?: Record<string, unknown>) => {
+      abortControllerRef.current = new AbortController();
+
+      setIsStreaming(true);
+      setError(null);
+      setUsage(null);
+      rawLinesRef.current = [];
+      setRawLines([]);
+
+      const previousSpec = context?.previousSpec as Spec | undefined;
+      let currentSpec: Spec =
+        previousSpec && previousSpec.root
+          ? { ...previousSpec, elements: { ...previousSpec.elements } }
+          : { root: "", elements: {} };
+      setSpec(currentSpec);
+
+      try {
+        const response = await fetch(api, {
+          method: "POST",
+          headers: { "Content-Type": "application/json" },
+          body: JSON.stringify({
+            prompt,
+            context,
+            format: formatRef.current,
+            editModes: editModesRef.current,
+          }),
+          signal: abortControllerRef.current.signal,
+        });
+
+        if (!response.ok) {
+          let errorMessage = `HTTP error: ${response.status}`;
+          try {
+            const errorData = await response.json();
+            if (errorData.message) errorMessage = errorData.message;
+            else if (errorData.error) errorMessage = errorData.error;
+          } catch {
+            // use default
+          }
+          throw new Error(errorMessage);
+        }
+
+        const reader = response.body?.getReader();
+        if (!reader) throw new Error("No response body");
+
+        const decoder = new TextDecoder();
+        let buffer = "";
+
+        if (formatRef.current === "yaml") {
+          // ── YAML streaming ──
+          let fenceState: FenceState = "outside";
+          const compiler = createYamlStreamCompiler<Record<string, unknown>>();
+          let yamlEditAccumulated = "";
+          let yamlPatchAccumulated = "";
+          let diffAccumulated = "";
+
+          while (true) {
+            const { done, value } = await reader.read();
+            if (done) break;
+
+            buffer += decoder.decode(value, { stream: true });
+            const lines = buffer.split("\n");
+            buffer = lines.pop() ?? "";
+
+            for (const line of lines) {
+              const trimmed = line.trim();
+
+              // Check for usage metadata (appended after stream)
+              if (trimmed.startsWith("{") && trimmed.includes('"__meta"')) {
+                try {
+                  const parsed = JSON.parse(trimmed);
+                  if (parsed.__meta === "usage") {
+                    setUsage({
+                      promptTokens: parsed.promptTokens ?? 0,
+                      completionTokens: parsed.completionTokens ?? 0,
+                      totalTokens: parsed.totalTokens ?? 0,
+                      cachedTokens: parsed.cachedTokens ?? 0,
+                      cacheWriteTokens: parsed.cacheWriteTokens ?? 0,
+                    });
+                    continue;
+                  }
+                } catch {
+                  // not JSON
+                }
+              }
+
+              rawLinesRef.current.push(line);
+
+              if (fenceState === "outside") {
+                if (
+                  trimmed === YAML_SPEC_FENCE ||
+                  trimmed.startsWith(YAML_SPEC_FENCE + " ")
+                ) {
+                  fenceState = "yaml-spec";
+                  compiler.reset();
+                } else if (
+                  trimmed === YAML_EDIT_FENCE ||
+                  trimmed.startsWith(YAML_EDIT_FENCE + " ")
+                ) {
+                  fenceState = "yaml-edit";
+                  yamlEditAccumulated = "";
+                } else if (
+                  trimmed === YAML_PATCH_FENCE ||
+                  trimmed.startsWith(YAML_PATCH_FENCE + " ")
+                ) {
+                  fenceState = "yaml-patch";
+                  yamlPatchAccumulated = "";
+                } else if (
+                  trimmed === DIFF_FENCE ||
+                  trimmed.startsWith(DIFF_FENCE + " ")
+                ) {
+                  fenceState = "diff";
+                  diffAccumulated = "";
+                }
+              } else if (trimmed === FENCE_CLOSE || trimmed === "````") {
+                if (fenceState === "yaml-spec") {
+                  const { result, newPatches } = compiler.flush();
+                  if (result && typeof result === "object" && result.root) {
+                    for (const patch of newPatches) {
+                      currentSpec = applySpecPatch(currentSpec, patch);
+                    }
+                    setSpec({ ...currentSpec });
+                  }
+                } else if (fenceState === "yaml-edit") {
+                  try {
+                    const editObj = yamlParse(yamlEditAccumulated);
+                    if (editObj && typeof editObj === "object") {
+                      const merged = deepMergeSpec(
+                        currentSpec as unknown as Record<string, unknown>,
+                        editObj as Record<string, unknown>,
+                      );
+                      const patches = diffToPatches(
+                        currentSpec as unknown as Record<string, unknown>,
+                        merged,
+                      );
+                      for (const patch of patches) {
+                        currentSpec = applySpecPatch(currentSpec, patch);
+                      }
+                      setSpec({ ...currentSpec });
+                    }
+                  } catch {
+                    // Invalid YAML edit
+                  }
+                } else if (fenceState === "yaml-patch") {
+                  for (const patchLine of yamlPatchAccumulated.split("\n")) {
+                    const t = patchLine.trim();
+                    if (!t) continue;
+                    try {
+                      const patch = JSON.parse(t) as JsonPatch;
+                      if (patch.op) {
+                        currentSpec = applySpecPatch(currentSpec, patch);
+                      }
+                    } catch {
+                      // Skip invalid JSON lines
+                    }
+                  }
+                  setSpec({ ...currentSpec });
+                } else if (fenceState === "diff") {
+                  try {
+                    const specYaml = yamlStringify(currentSpec, { indent: 2 });
+                    const patched = applyUnifiedDiff(specYaml, diffAccumulated);
+                    if (typeof patched === "string") {
+                      const parsed = yamlParse(patched);
+                      if (parsed && typeof parsed === "object") {
+                        const patches = diffToPatches(
+                          currentSpec as unknown as Record<string, unknown>,
+                          parsed as Record<string, unknown>,
+                        );
+                        for (const patch of patches) {
+                          currentSpec = applySpecPatch(currentSpec, patch);
+                        }
+                        setSpec({ ...currentSpec });
+                      }
+                    }
+                  } catch {
+                    // Diff apply or reparse failed
+                  }
+                }
+                fenceState = "outside";
+              } else if (fenceState === "yaml-spec") {
+                const { newPatches } = compiler.push(line + "\n");
+                if (newPatches.length > 0) {
+                  for (const patch of newPatches) {
+                    currentSpec = applySpecPatch(currentSpec, patch);
+                  }
+                  setSpec({ ...currentSpec });
+                }
+              } else if (fenceState === "yaml-edit") {
+                yamlEditAccumulated += line + "\n";
+              } else if (fenceState === "yaml-patch") {
+                yamlPatchAccumulated += line + "\n";
+              } else if (fenceState === "diff") {
+                diffAccumulated += line + "\n";
+              }
+            }
+            setRawLines([...rawLinesRef.current]);
+          }
+
+          // Process remaining buffer
+          if (buffer.trim()) {
+            const trimmed = buffer.trim();
+            if (trimmed.startsWith("{") && trimmed.includes('"__meta"')) {
+              try {
+                const parsed = JSON.parse(trimmed);
+                if (parsed.__meta === "usage") {
+                  setUsage({
+                    promptTokens: parsed.promptTokens ?? 0,
+                    completionTokens: parsed.completionTokens ?? 0,
+                    totalTokens: parsed.totalTokens ?? 0,
+                    cachedTokens: parsed.cachedTokens ?? 0,
+                    cacheWriteTokens: parsed.cacheWriteTokens ?? 0,
+                  });
+                }
+              } catch {
+                // not JSON
+              }
+            } else if (fenceState === "yaml-spec") {
+              compiler.push(buffer);
+              const { result, newPatches } = compiler.flush();
+              if (result && typeof result === "object" && result.root) {
+                for (const patch of newPatches) {
+                  currentSpec = applySpecPatch(currentSpec, patch);
+                }
+                setSpec({ ...currentSpec });
+              }
+            }
+          }
+        } else {
+          // ── JSONL streaming ──
+          let jsonlDiffState: "outside" | "diff" = "outside";
+          let jsonlDiffAccumulated = "";
+
+          while (true) {
+            const { done, value } = await reader.read();
+            if (done) break;
+
+            buffer += decoder.decode(value, { stream: true });
+            const lines = buffer.split("\n");
+            buffer = lines.pop() ?? "";
+
+            for (const line of lines) {
+              const trimmed = line.trim();
+              if (!trimmed) continue;
+
+              // Diff fence detection within JSONL mode
+              if (jsonlDiffState === "outside") {
+                if (
+                  trimmed === DIFF_FENCE ||
+                  trimmed.startsWith(DIFF_FENCE + " ")
+                ) {
+                  jsonlDiffState = "diff";
+                  jsonlDiffAccumulated = "";
+                  continue;
+                }
+              } else if (
+                jsonlDiffState === "diff" &&
+                (trimmed === FENCE_CLOSE || trimmed === "````")
+              ) {
+                try {
+                  const specJson = JSON.stringify(currentSpec, null, 2);
+                  const patched = applyUnifiedDiff(
+                    specJson,
+                    jsonlDiffAccumulated,
+                  );
+                  if (typeof patched === "string") {
+                    const parsed = JSON.parse(patched);
+                    if (parsed && typeof parsed === "object") {
+                      const patches = diffToPatches(
+                        currentSpec as unknown as Record<string, unknown>,
+                        parsed as Record<string, unknown>,
+                      );
+                      for (const patch of patches) {
+                        currentSpec = applySpecPatch(currentSpec, patch);
+                      }
+                      setSpec({ ...currentSpec });
+                    }
+                  }
+                } catch {
+                  // Diff apply failed
+                }
+                jsonlDiffState = "outside";
+                continue;
+              }
+
+              if (jsonlDiffState === "diff") {
+                jsonlDiffAccumulated += line + "\n";
+                rawLinesRef.current.push(line);
+                continue;
+              }
+
+              // Standard JSONL line parsing
+              const result = parseLine(trimmed);
+              if (!result) continue;
+              if (result.type === "usage") {
+                setUsage(result.usage);
+              } else if (result.type === "json-edit") {
+                const merged = deepMergeSpec(
+                  currentSpec as unknown as Record<string, unknown>,
+                  result.mergeObj,
+                );
+                const patches = diffToPatches(
+                  currentSpec as unknown as Record<string, unknown>,
+                  merged,
+                );
+                for (const patch of patches) {
+                  currentSpec = applySpecPatch(currentSpec, patch);
+                }
+                rawLinesRef.current.push(trimmed);
+                setSpec({ ...currentSpec });
+              } else {
+                rawLinesRef.current.push(trimmed);
+                currentSpec = applySpecPatch(currentSpec, result.patch);
+                setSpec({ ...currentSpec });
+              }
+            }
+            setRawLines([...rawLinesRef.current]);
+          }
+
+          if (buffer.trim()) {
+            const trimmed = buffer.trim();
+            const result = parseLine(trimmed);
+            if (result) {
+              if (result.type === "usage") {
+                setUsage(result.usage);
+              } else if (result.type === "json-edit") {
+                const merged = deepMergeSpec(
+                  currentSpec as unknown as Record<string, unknown>,
+                  result.mergeObj,
+                );
+                const patches = diffToPatches(
+                  currentSpec as unknown as Record<string, unknown>,
+                  merged,
+                );
+                for (const patch of patches) {
+                  currentSpec = applySpecPatch(currentSpec, patch);
+                }
+                rawLinesRef.current.push(trimmed);
+                setSpec({ ...currentSpec });
+              } else {
+                rawLinesRef.current.push(trimmed);
+                currentSpec = applySpecPatch(currentSpec, result.patch);
+                setSpec({ ...currentSpec });
+              }
+            }
+          }
+        }
+
+        onCompleteRef.current?.(currentSpec);
+      } catch (err) {
+        if ((err as Error).name === "AbortError") return;
+        const error = err instanceof Error ? err : new Error(String(err));
+        setError(error);
+        onErrorRef.current?.(error);
+      } finally {
+        setIsStreaming(false);
+      }
+    },
+    [api],
+  );
+
+  useEffect(() => {
+    return () => {
+      abortControllerRef.current?.abort();
+    };
+  }, []);
+
+  return { spec, isStreaming, error, usage, rawLines, send, clear };
+}

apps/web/mdx-components.tsx

@@ -35,16 +35,26 @@ export function useMDXComponents(components: MDXComponents): MDXComponents {
     h2: ({ children }: { children?: React.ReactNode }) => {
       const id = slugify(extractText(children));
       return (
-        <h2 id={id} className="text-xl font-semibold mt-12 mb-4">
-          {children}
+        <h2 id={id} className="group text-xl font-semibold mt-12 mb-4">
+          <a href={`#${id}`} className="no-underline hover:no-underline">
+            {children}
+            <span className="ml-2 text-muted-foreground/0 group-hover:text-muted-foreground transition-colors select-none">
+              #
+            </span>
+          </a>
         </h2>
       );
     },
     h3: ({ children }: { children?: React.ReactNode }) => {
       const id = slugify(extractText(children));
       return (
-        <h3 id={id} className="text-lg font-medium mt-8 mb-3">
-          {children}
+        <h3 id={id} className="group text-lg font-medium mt-8 mb-3">
+          <a href={`#${id}`} className="no-underline hover:no-underline">
+            {children}
+            <span className="ml-2 text-muted-foreground/0 group-hover:text-muted-foreground transition-colors select-none">
+              #
+            </span>
+          </a>
         </h3>
       );
     },

apps/web/package.json

@@ -1,10 +1,11 @@
 {
   "name": "web",
-  "version": "0.1.2",
+  "version": "0.1.11",
   "type": "module",
   "private": true,
   "license": "Apache-2.0",
   "scripts": {
+    "predev": "command -v portless >/dev/null 2>&1 || (echo '\\nportless is required but not installed. Run: npm i -g portless\\nSee: https://github.com/vercel-labs/portless\\n' && exit 1)",
     "dev": "portless json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",
@@ -16,7 +17,10 @@
     "@ai-sdk/react": "3.0.79",
     "@json-render/codegen": "workspace:*",
     "@json-render/core": "workspace:*",
+    "@json-render/devtools": "workspace:*",
+    "@json-render/devtools-react": "workspace:*",
     "@json-render/react": "workspace:*",
+    "@json-render/yaml": "workspace:*",
     "@mdx-js/loader": "^3.1.1",
     "@mdx-js/mdx": "^3.1.1",
     "@mdx-js/react": "^3.1.1",
@@ -33,9 +37,9 @@
     "bash-tool": "1.3.14",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
+    "diff": "^8.0.3",
     "embla-carousel-react": "^8.6.0",
     "geist": "1.7.0",
-    "just-bash": "2.9.6",
     "lucide-react": "^0.562.0",
     "next": "16.1.1",
     "next-themes": "^0.4.6",
@@ -50,7 +54,8 @@
     "tailwind-merge": "^3.4.0",
     "unist-util-visit": "5.1.0",
     "vaul": "^1.1.2",
-    "zod": "^4.0.0"
+    "yaml": "^2.8.2",
+    "zod": "^4.3.6"
   },
   "devDependencies": {
     "@internal/eslint-config": "workspace:*",

examples/chat/.env.example

@@ -0,0 +1,15 @@
+# Vercel AI Gateway
+# Automatically authenticated when deployed on Vercel
+# For local development, get your key from https://vercel.com/ai-gateway
+AI_GATEWAY_API_KEY=
+
+# AI Model Configuration
+# Default: anthropic/claude-haiku-4.5
+AI_GATEWAY_MODEL=anthropic/claude-haiku-4.5
+
+# Rate Limiting (Upstash Redis)
+# Optional - rate limiting is disabled when these are not set
+KV_REST_API_URL=
+KV_REST_API_TOKEN=
+RATE_LIMIT_PER_MINUTE=10
+RATE_LIMIT_PER_DAY=100

examples/chat/CHANGELOG.md

@@ -1,5 +1,86 @@
 # example-chat
 
+## 0.1.11
+
+### Patch Changes
+
+- Updated dependencies [519a538]
+  - @json-render/core@0.16.0
+  - @json-render/react@0.16.0
+  - @json-render/shadcn@0.16.0
+
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react@0.15.0
+  - @json-render/shadcn@0.15.0
+
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react@0.14.1
+  - @json-render/shadcn@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react@0.14.0
+  - @json-render/shadcn@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/react@0.13.0
+  - @json-render/shadcn@0.13.0
+
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [54a1ecf]
+  - @json-render/core@0.12.1
+  - @json-render/react@0.12.1
+  - @json-render/shadcn@0.12.1
+
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/react@0.12.0
+  - @json-render/shadcn@0.12.0
+
+## 0.1.4
+
+### Patch Changes
+
+- Updated dependencies [3f1e71e]
+  - @json-render/core@0.11.0
+  - @json-render/react@0.11.0
+  - @json-render/shadcn@0.11.0
+
+## 0.1.3
+
+### Patch Changes
+
+- Updated dependencies [9cef4e9]
+  - @json-render/core@0.10.0
+  - @json-render/react@0.10.0
+  - @json-render/shadcn@0.10.0
+
 ## 0.1.2
 
 ### Patch Changes

examples/chat/README.md

@@ -0,0 +1,50 @@
+# Chat Example
+
+An AI-powered data explorer that streams rich, interactive UI directly into a chat interface. The assistant uses tool calls to fetch real data (weather, GitHub, crypto, Hacker News, web search), then generates a json-render spec that renders inline alongside the conversation using shadcn components, Recharts, and React Three Fiber.
+
+## What it shows
+
+- **Streaming specs inside chat messages** -- `pipeJsonRender` on the server merges the AI SDK UI stream with json-render spec patches so text, tool-call indicators, and rendered UI all appear in the correct order within a single message bubble.
+- **ToolLoopAgent with live data** -- the agent loops through tool calls (weather, GitHub repos/PRs, crypto prices, Hacker News, web search) to gather real data before generating UI.
+- **Full catalog/registry stack** -- a catalog constrains what the model can produce; the registry maps every component to a real React implementation (shadcn, Recharts charts, R3F 3D scenes).
+- **State and interactivity** -- `$state`, `$bindState`, visibility, and actions work inside the streamed spec, so the rendered UI is interactive, not static.
+
+## Setup
+
+```bash
+pnpm install          # from the monorepo root
+cd examples/chat
+cp .env.example .env.local
+```
+
+Set the required environment variables in `.env.local`:
+
+| Variable | Required | Description |
+|----------|----------|-------------|
+| `AI_GATEWAY_API_KEY` | Yes | Vercel AI Gateway key (auto-authenticated on Vercel) |
+| `AI_GATEWAY_MODEL` | No | Model identifier, defaults to `anthropic/claude-haiku-4.5` |
+| `KV_REST_API_URL` | No | Upstash Redis URL for rate limiting |
+| `KV_REST_API_TOKEN` | No | Upstash Redis token |
+| `RATE_LIMIT_PER_MINUTE` | No | Defaults to `10` |
+| `RATE_LIMIT_PER_DAY` | No | Defaults to `100` |
+
+Rate limiting is a no-op when the Upstash variables are not set.
+
+## Run
+
+```bash
+pnpm dev
+# http://chat-demo.json-render.localhost:1355
+```
+
+Requires global [`portless`](https://github.com/vercel-labs/portless). The `predev` script checks for it automatically.
+
+## Files
+
+- `app/page.tsx` -- chat UI with `useChat`, message rendering, and inline spec display
+- `app/api/generate/route.ts` -- streams the agent through `pipeJsonRender` with optional Upstash rate limiting
+- `lib/agent.ts` -- `ToolLoopAgent` with system prompt from `explorerCatalog.prompt()` and custom rules for layout, 3D, and interactivity
+- `lib/tools/` -- tool definitions for weather, GitHub, crypto, Hacker News, and web search
+- `lib/render/catalog.ts` -- component catalog (shadcn base + custom metrics, tables, charts, tabs, 3D)
+- `lib/render/registry.tsx` -- maps catalog types to React components (shadcn, Recharts, R3F)
+- `lib/render/renderer.tsx` -- `ExplorerRenderer` wrapping `StateProvider`, `VisibilityProvider`, `ActionProvider`, and `Renderer`

examples/chat/app/api/generate/route.ts

@@ -1,4 +1,5 @@
 import { agent } from "@/lib/agent";
+import { minuteRateLimit, dailyRateLimit } from "@/lib/rate-limit";
 import {
   convertToModelMessages,
   createUIMessageStream,
@@ -6,10 +7,35 @@ import {
   type UIMessage,
 } from "ai";
 import { pipeJsonRender } from "@json-render/core";
+import { headers } from "next/headers";
 
 export const maxDuration = 60;
 
 export async function POST(req: Request) {
+  const headersList = await headers();
+  const ip = headersList.get("x-forwarded-for")?.split(",")[0] ?? "anonymous";
+
+  const [minuteResult, dailyResult] = await Promise.all([
+    minuteRateLimit.limit(ip),
+    dailyRateLimit.limit(ip),
+  ]);
+
+  if (!minuteResult.success || !dailyResult.success) {
+    const isMinuteLimit = !minuteResult.success;
+    return new Response(
+      JSON.stringify({
+        error: "Rate limit exceeded",
+        message: isMinuteLimit
+          ? "Too many requests. Please wait a moment before trying again."
+          : "Daily limit reached. Please try again tomorrow.",
+      }),
+      {
+        status: 429,
+        headers: { "Content-Type": "application/json" },
+      },
+    );
+  }
+
   const body = await req.json();
   const uiMessages: UIMessage[] = body.messages;
 

examples/chat/lib/agent.ts

@@ -130,7 +130,7 @@ When the user asks for a quiz, test, or Q&A, build an interactive experience:
 4. You can also add a final score section that becomes visible when all questions are submitted.
 
 ${explorerCatalog.prompt({
-  mode: "chat",
+  mode: "inline",
   customRules: [
     "NEVER use viewport height classes (min-h-screen, h-screen) — the UI renders inside a fixed-size container.",
     "Prefer Grid with columns='2' or columns='3' for side-by-side layouts.",

examples/chat/lib/rate-limit.ts

@@ -0,0 +1,57 @@
+import { Ratelimit } from "@upstash/ratelimit";
+import { Redis } from "@upstash/redis";
+
+// Lazy initialization to avoid errors when Redis env vars are not configured
+let _minuteRateLimit: Ratelimit | null = null;
+let _dailyRateLimit: Ratelimit | null = null;
+
+function getRedis(): Redis | null {
+  const url = process.env.KV_REST_API_URL;
+  const token = process.env.KV_REST_API_TOKEN;
+
+  if (!url || !token) {
+    return null;
+  }
+
+  return new Redis({ url, token });
+}
+
+// No-op rate limiter for when Redis is not configured
+const noopRateLimiter = {
+  limit: async () => ({ success: true, limit: 0, remaining: 0, reset: 0 }),
+};
+
+const MINUTE_LIMIT = Number(process.env.RATE_LIMIT_PER_MINUTE) || 10;
+const DAILY_LIMIT = Number(process.env.RATE_LIMIT_PER_DAY) || 100;
+
+// Requests per minute (sliding window)
+export const minuteRateLimit = {
+  limit: async (identifier: string) => {
+    if (!_minuteRateLimit) {
+      const redis = getRedis();
+      if (!redis) return noopRateLimiter.limit();
+      _minuteRateLimit = new Ratelimit({
+        redis,
+        limiter: Ratelimit.slidingWindow(MINUTE_LIMIT, "1 m"),
+        prefix: "ratelimit:chat:minute",
+      });
+    }
+    return _minuteRateLimit.limit(identifier);
+  },
+};
+
+// Requests per day (fixed window)
+export const dailyRateLimit = {
+  limit: async (identifier: string) => {
+    if (!_dailyRateLimit) {
+      const redis = getRedis();
+      if (!redis) return noopRateLimiter.limit();
+      _dailyRateLimit = new Ratelimit({
+        redis,
+        limiter: Ratelimit.fixedWindow(DAILY_LIMIT, "1 d"),
+        prefix: "ratelimit:chat:daily",
+      });
+    }
+    return _dailyRateLimit.limit(identifier);
+  },
+};

examples/chat/next-env.d.ts

@@ -1,6 +0,0 @@
-/// <reference types="next" />
-/// <reference types="next/image-types/global" />
-import "./.next/dev/types/routes.d.ts";
-
-// NOTE: This file should not be edited
-// see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

examples/chat/package.json

@@ -1,9 +1,10 @@
 {
   "name": "example-chat",
-  "version": "0.1.2",
+  "version": "0.1.11",
   "type": "module",
   "private": true,
   "scripts": {
+    "predev": "command -v portless >/dev/null 2>&1 || (echo '\\nportless is required but not installed. Run: npm i -g portless\\nSee: https://github.com/vercel-labs/portless\\n' && exit 1)",
     "dev": "portless chat-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",
@@ -33,7 +34,9 @@
     "streamdown": "^2.2.0",
     "tailwind-merge": "^3.4.0",
     "three": "^0.182.0",
-    "zod": "4.3.5"
+    "@upstash/ratelimit": "^2.0.8",
+    "@upstash/redis": "^1.37.0",
+    "zod": "4.3.6"
   },
   "devDependencies": {
     "@internal/eslint-config": "workspace:*",

examples/dashboard/.env.example

@@ -4,3 +4,10 @@ DATABASE_URL=postgresql://postgres:postgres@localhost:5432/json_render_dashboard
 # AI (optional - for UI generation)
 AI_GATEWAY_API_KEY=
 AI_GATEWAY_MODEL=anthropic/claude-haiku-4.5
+
+# Rate Limiting (Upstash Redis)
+# Optional - rate limiting is disabled when these are not set
+KV_REST_API_URL=
+KV_REST_API_TOKEN=
+RATE_LIMIT_PER_MINUTE=10
+RATE_LIMIT_PER_DAY=100

examples/dashboard/CHANGELOG.md

@@ -1,5 +1,86 @@
 # example-dashboard
 
+## 0.1.11
+
+### Patch Changes
+
+- Updated dependencies [519a538]
+  - @json-render/core@0.16.0
+  - @json-render/codegen@0.16.0
+  - @json-render/react@0.16.0
+
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/codegen@0.15.0
+  - @json-render/react@0.15.0
+
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/codegen@0.14.1
+  - @json-render/react@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/codegen@0.14.0
+  - @json-render/react@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/codegen@0.13.0
+  - @json-render/react@0.13.0
+
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [54a1ecf]
+  - @json-render/core@0.12.1
+  - @json-render/codegen@0.12.1
+  - @json-render/react@0.12.1
+
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/codegen@0.12.0
+  - @json-render/react@0.12.0
+
+## 0.1.4
+
+### Patch Changes
+
+- Updated dependencies [3f1e71e]
+  - @json-render/core@0.11.0
+  - @json-render/codegen@0.11.0
+  - @json-render/react@0.11.0
+
+## 0.1.3
+
+### Patch Changes
+
+- Updated dependencies [9cef4e9]
+  - @json-render/core@0.10.0
+  - @json-render/react@0.10.0
+  - @json-render/codegen@0.10.0
+
 ## 0.1.2
 
 ### Patch Changes

examples/dashboard/README.md

@@ -0,0 +1,58 @@
+# Dashboard Example
+
+AI-generated dashboard widgets with guardrails. Each widget is streamed from an LLM, constrained by a json-render catalog, and rendered with shadcn components and Recharts. Widgets can fetch and mutate data through named actions that hit a real REST API backed by Postgres.
+
+## What it shows
+
+- **Streaming widget generation** -- `useUIStream` streams JSONL patches from the server, progressively building each widget's spec.
+- **Catalog-constrained actions** -- the catalog declares typed actions (`viewCustomers`, `createInvoice`, `approveExpense`, etc.) that map to REST endpoints; the registry wires them to real `fetch` calls with toast feedback.
+- **Persistence** -- widget prompts and specs are saved to Postgres via Drizzle ORM, so widgets survive page reloads.
+- **Drag-and-drop reorder** -- `@dnd-kit` lets you rearrange widgets, with ordering persisted to the database.
+- **Edit mode** -- send a follow-up prompt to iteratively refine a saved widget.
+
+## Setup
+
+```bash
+pnpm install          # from the monorepo root
+cd examples/dashboard
+cp .env.example .env
+```
+
+Set the required environment variables:
+
+| Variable | Required | Description |
+|----------|----------|-------------|
+| `DATABASE_URL` | Yes | Postgres connection string |
+| `AI_GATEWAY_API_KEY` | Yes | Vercel AI Gateway key |
+| `AI_GATEWAY_MODEL` | No | Defaults to `anthropic/claude-haiku-4.5` |
+| `KV_REST_API_URL` | No | Upstash Redis URL for rate limiting |
+| `KV_REST_API_TOKEN` | No | Upstash Redis token |
+| `RATE_LIMIT_PER_MINUTE` | No | Defaults to `10` |
+| `RATE_LIMIT_PER_DAY` | No | Defaults to `100` |
+
+Set up the database:
+
+```bash
+pnpm db:push          # apply the schema to your database
+pnpm db:seed          # optional: populate with sample data
+```
+
+## Run
+
+```bash
+pnpm dev
+# http://dashboard-demo.json-render.localhost:1355
+```
+
+Requires global [`portless`](https://github.com/vercel-labs/portless). The `predev` script checks for it automatically.
+
+## Files
+
+- `app/page.tsx` -- dashboard grid with drag-and-drop, widget management, and add/edit flows
+- `app/api/generate/route.ts` -- streams text from the model using `dashboardCatalog.prompt()` as the system prompt
+- `app/api/v1/` -- REST API for widgets, customers, invoices, expenses, accounts, and reports
+- `lib/render/catalog.ts` -- component catalog with shadcn-based UI primitives and typed business actions
+- `lib/render/registry.tsx` -- maps components to React (shadcn + Recharts) and wires actions to REST calls
+- `lib/render/renderer.tsx` -- `DashboardRenderer` with state, visibility, and action providers
+- `lib/db/schema.ts` -- Drizzle schema for customers, invoices, expenses, accounts, transactions, and widgets
+- `components/widget.tsx` -- individual widget with `useUIStream`, auto-action execution, and save/edit logic

examples/dashboard/app/api/generate/route.ts

@@ -1,6 +1,8 @@
 import { streamText } from "ai";
 import { buildUserPrompt } from "@json-render/core";
 import { dashboardCatalog } from "@/lib/render/catalog";
+import { minuteRateLimit, dailyRateLimit } from "@/lib/rate-limit";
+import { headers } from "next/headers";
 
 export const maxDuration = 30;
 
@@ -9,6 +11,30 @@ const SYSTEM_PROMPT = dashboardCatalog.prompt();
 const DEFAULT_MODEL = "anthropic/claude-haiku-4.5";
 
 export async function POST(req: Request) {
+  const headersList = await headers();
+  const ip = headersList.get("x-forwarded-for")?.split(",")[0] ?? "anonymous";
+
+  const [minuteResult, dailyResult] = await Promise.all([
+    minuteRateLimit.limit(ip),
+    dailyRateLimit.limit(ip),
+  ]);
+
+  if (!minuteResult.success || !dailyResult.success) {
+    const isMinuteLimit = !minuteResult.success;
+    return new Response(
+      JSON.stringify({
+        error: "Rate limit exceeded",
+        message: isMinuteLimit
+          ? "Too many requests. Please wait a moment before trying again."
+          : "Daily limit reached. Please try again tomorrow.",
+      }),
+      {
+        status: 429,
+        headers: { "Content-Type": "application/json" },
+      },
+    );
+  }
+
   const { prompt, context } = await req.json();
 
   const userPrompt = buildUserPrompt({

examples/dashboard/components/header.tsx

@@ -47,7 +47,7 @@ export function Header() {
         </div>
         <nav className="flex items-center gap-4">
           <a
-            href="https://json-render.vercel.app"
+            href="https://json-render.dev"
             target="_blank"
             rel="noopener noreferrer"
             className="text-sm text-muted-foreground hover:text-foreground transition-colors"

examples/dashboard/lib/rate-limit.ts

@@ -0,0 +1,57 @@
+import { Ratelimit } from "@upstash/ratelimit";
+import { Redis } from "@upstash/redis";
+
+// Lazy initialization to avoid errors when Redis env vars are not configured
+let _minuteRateLimit: Ratelimit | null = null;
+let _dailyRateLimit: Ratelimit | null = null;
+
+function getRedis(): Redis | null {
+  const url = process.env.KV_REST_API_URL;
+  const token = process.env.KV_REST_API_TOKEN;
+
+  if (!url || !token) {
+    return null;
+  }
+
+  return new Redis({ url, token });
+}
+
+// No-op rate limiter for when Redis is not configured
+const noopRateLimiter = {
+  limit: async () => ({ success: true, limit: 0, remaining: 0, reset: 0 }),
+};
+
+const MINUTE_LIMIT = Number(process.env.RATE_LIMIT_PER_MINUTE) || 10;
+const DAILY_LIMIT = Number(process.env.RATE_LIMIT_PER_DAY) || 100;
+
+// Requests per minute (sliding window)
+export const minuteRateLimit = {
+  limit: async (identifier: string) => {
+    if (!_minuteRateLimit) {
+      const redis = getRedis();
+      if (!redis) return noopRateLimiter.limit();
+      _minuteRateLimit = new Ratelimit({
+        redis,
+        limiter: Ratelimit.slidingWindow(MINUTE_LIMIT, "1 m"),
+        prefix: "ratelimit:dashboard:minute",
+      });
+    }
+    return _minuteRateLimit.limit(identifier);
+  },
+};
+
+// Requests per day (fixed window)
+export const dailyRateLimit = {
+  limit: async (identifier: string) => {
+    if (!_dailyRateLimit) {
+      const redis = getRedis();
+      if (!redis) return noopRateLimiter.limit();
+      _dailyRateLimit = new Ratelimit({
+        redis,
+        limiter: Ratelimit.fixedWindow(DAILY_LIMIT, "1 d"),
+        prefix: "ratelimit:dashboard:daily",
+      });
+    }
+    return _dailyRateLimit.limit(identifier);
+  },
+};

examples/dashboard/next-env.d.ts

@@ -1,6 +0,0 @@
-/// <reference types="next" />
-/// <reference types="next/image-types/global" />
-import "./.next/dev/types/routes.d.ts";
-
-// NOTE: This file should not be edited
-// see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

examples/dashboard/package.json

@@ -1,9 +1,10 @@
 {
   "name": "example-dashboard",
-  "version": "0.1.2",
+  "version": "0.1.11",
   "type": "module",
   "private": true,
   "scripts": {
+    "predev": "command -v portless >/dev/null 2>&1 || (echo '\\nportless is required but not installed. Run: npm i -g portless\\nSee: https://github.com/vercel-labs/portless\\n' && exit 1)",
     "dev": "portless dashboard-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",
@@ -39,7 +40,9 @@
     "sonner": "^2.0.7",
     "tailwind-merge": "^3.4.0",
     "vaul": "^1.1.2",
-    "zod": "^4.0.0"
+    "@upstash/ratelimit": "^2.0.8",
+    "@upstash/redis": "^1.37.0",
+    "zod": "^4.3.6"
   },
   "devDependencies": {
     "@internal/eslint-config": "workspace:*",

examples/devtools/.env.example

@@ -0,0 +1,7 @@
+# Vercel AI Gateway
+# Get a key from https://vercel.com/ai-gateway
+# Automatically authenticated when deployed on Vercel.
+AI_GATEWAY_API_KEY=
+
+# Optional: override the model. Defaults to anthropic/claude-haiku-4.5.
+AI_GATEWAY_MODEL=

examples/devtools/README.md

@@ -0,0 +1,49 @@
+# Devtools example
+
+An AI-powered chat where each assistant reply streams a fresh `Spec` that renders inline. A single `<JsonRenderDevtools />` panel observes **every** rendered spec, **every** streamed patch, **every** state change, and **every** dispatched action across the whole page — demonstrating how one devtools instance works with many renderers.
+
+Pairs with [`@json-render/devtools`](../../packages/devtools) and [`@json-render/devtools-react`](../../packages/devtools-react).
+
+## What it shows
+
+- **AI-streamed specs (inline mode)** — the agent writes a short conversational reply, then emits a `` ```spec `` fence of RFC 6902 JSON patches. `pipeJsonRender` on the server splits that into `data-spec` parts and plain text parts; the client re-assembles both with `useJsonRenderMessage`.
+- **One renderer per assistant message, one devtools panel** — every message gets its own `<Renderer />`, but they share a single top-level `<JSONUIProvider>`, so the devtools State / Actions / Stream tabs see the whole page, not just one message.
+- **State namespacing per turn** — the API route hands the agent a unique `messageId` and requires every element key (`<id>-root`, `<id>-counter`, …) and state path (`/<id>/count`, `/<id>/todos`) to be prefixed with it, so specs from different messages never collide on shared state.
+- **Built-ins exercised** — `setState`, `pushState`, `removeState`, plus `inc`/`dec`/`toggle`/`add` computed functions, `$bindState`, `$template`, `$state`, `repeat`, `$item`, `$index`, and conditional `visible`.
+- **The Pick panel across renderers** — because every element is tagged with `data-jr-key`, picking an element in any assistant bubble jumps to its spec in the panel.
+
+## Setup
+
+```bash
+pnpm install
+cp .env.example .env.local
+# Edit .env.local and set AI_GATEWAY_API_KEY
+```
+
+Grab an AI Gateway key at <https://vercel.com/ai-gateway>. On Vercel the key is auto-authenticated, so you only need this for local dev.
+
+## Run
+
+```bash
+pnpm dev
+# http://devtools-demo.json-render.localhost:1355
+```
+
+Press <kbd>⌘</kbd> <kbd>⇧</kbd> <kbd>J</kbd> (or click the floating `{}` badge) to toggle the panel. It starts open by default.
+
+## Files
+
+- `app/page.tsx` — chat UI, top-level `<JSONUIProvider>`, per-message `<Renderer />`, `<JsonRenderDevtools>` mount
+- `app/api/chat/route.ts` — streams the agent through `pipeJsonRender`
+- `lib/agent.ts` — `ToolLoopAgent` with a system prompt that enforces inline mode + `messageId`-based namespacing
+- `lib/catalog.ts` — compact catalog (Card, Stack, Grid, Metric, Button, TextInput, Checkbox, List, ProgressBar, Callout, …) tuned to show off devtools
+- `lib/registry.tsx` — component renderers with plain inline styles, no UI framework
+
+## Try these prompts
+
+- "Build an interactive counter with + and - buttons" — Actions tab lights up with `setState` dispatches.
+- "Make a todo list where I can add items, mark them done, and remove them" — exercises `pushState` / `removeState` and `$bindState` inputs.
+- "Show me a fitness dashboard with three metrics and progress bars" — metric-heavy spec; handy for the Spec tree + State inspector.
+- "Quiz me on three geography questions with a submit button that reveals my score" — uses bindings plus conditional visibility.
+
+Then send a second prompt in the same session and watch the Stream tab keep appending patches while the State tab shows both turns' namespaced keys side by side.

examples/devtools/app/api/chat/route.ts

@@ -0,0 +1,52 @@
+import {
+  convertToModelMessages,
+  createUIMessageStream,
+  createUIMessageStreamResponse,
+  type UIMessage,
+} from "ai";
+import { pipeJsonRender } from "@json-render/core";
+import { createAgent } from "@/lib/agent";
+
+export const maxDuration = 60;
+
+export async function POST(req: Request) {
+  if (!process.env.AI_GATEWAY_API_KEY) {
+    return new Response(
+      JSON.stringify({
+        error: "Missing AI_GATEWAY_API_KEY",
+        message:
+          "Set AI_GATEWAY_API_KEY in .env.local to enable AI. See https://vercel.com/ai-gateway.",
+      }),
+      { status: 500, headers: { "Content-Type": "application/json" } },
+    );
+  }
+
+  const body = (await req.json()) as {
+    messages: UIMessage[];
+    messageId?: string;
+  };
+
+  if (!body.messages?.length) {
+    return new Response(
+      JSON.stringify({ error: "messages array is required" }),
+      { status: 400, headers: { "Content-Type": "application/json" } },
+    );
+  }
+
+  // The client generates a stable messageId per turn so the agent can
+  // namespace state paths and element keys. Fall back to a random id.
+  const messageId =
+    body.messageId ?? `m${Math.random().toString(36).slice(2, 8)}`;
+
+  const agent = createAgent(messageId);
+  const modelMessages = await convertToModelMessages(body.messages);
+  const result = await agent.stream({ messages: modelMessages });
+
+  const stream = createUIMessageStream({
+    execute: async ({ writer }) => {
+      writer.merge(pipeJsonRender(result.toUIMessageStream()));
+    },
+  });
+
+  return createUIMessageStreamResponse({ stream });
+}

examples/devtools/app/globals.css

@@ -0,0 +1,429 @@
+:root {
+  color-scheme: light;
+  --surface: #ffffff;
+  --surface-raised: #ffffff;
+  --surface-muted: #f4f4f5;
+  --border: #e4e4e7;
+  --text: #0a0a0a;
+  --text-muted: #71717a;
+  --accent: #6366f1;
+  --accent-fg: #ffffff;
+  --success: #16a34a;
+  --warn: #d97706;
+  --user-bubble-bg: #0a0a0a;
+  --user-bubble-fg: #ffffff;
+
+  font-family:
+    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
+    "Helvetica Neue", sans-serif;
+  font-size: 14px;
+  line-height: 1.5;
+  -webkit-font-smoothing: antialiased;
+  color: var(--text);
+  background: var(--surface-muted);
+}
+
+* {
+  box-sizing: border-box;
+}
+
+html,
+body {
+  margin: 0;
+  padding: 0;
+  height: 100%;
+}
+
+button,
+input,
+textarea {
+  font: inherit;
+  color: inherit;
+}
+
+a {
+  color: var(--accent);
+}
+
+code {
+  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
+  font-size: 0.9em;
+  background: var(--surface-muted);
+  padding: 0.1em 0.35em;
+  border-radius: 4px;
+}
+
+/* Dividers between repeated list items — top border on all but the first
+   so there's no dangling line at either end. */
+.jr-list-item + .jr-list-item {
+  border-top: 1px solid var(--border);
+}
+
+@keyframes jr-shimmer {
+  0%,
+  100% {
+    opacity: 0.55;
+  }
+  50% {
+    opacity: 1;
+  }
+}
+
+.jr-shimmer {
+  animation: jr-shimmer 1.4s ease-in-out infinite;
+}
+
+kbd {
+  display: inline-block;
+  padding: 1px 5px;
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  background: var(--surface);
+  font-family:
+    ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
+  font-size: 11px;
+  line-height: 1.3;
+}
+
+/* ==========================================================================
+   App shell
+   ========================================================================== */
+
+.app {
+  height: 100%;
+  display: grid;
+  grid-template-rows: auto 1fr auto;
+  background: var(--surface-muted);
+}
+
+.topbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 10px 20px;
+  background: var(--surface);
+  border-bottom: 1px solid var(--border);
+}
+
+.topbar-brand {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.logo-dot {
+  width: 22px;
+  height: 22px;
+  border-radius: 6px;
+  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent) 60%, #000));
+  box-shadow: 0 0 0 2px color-mix(in oklab, var(--accent) 20%, transparent);
+}
+
+.topbar-text {
+  display: flex;
+  flex-direction: column;
+  line-height: 1.2;
+}
+
+.topbar-title {
+  font-weight: 600;
+  font-size: 14px;
+}
+
+.topbar-sub {
+  font-size: 12px;
+  color: var(--text-muted);
+}
+
+.topbar-actions {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+}
+
+.btn-ghost {
+  background: transparent;
+  border: 1px solid transparent;
+  padding: 6px 10px;
+  border-radius: 8px;
+  font-size: 13px;
+  color: var(--text-muted);
+  cursor: pointer;
+}
+.btn-ghost:hover {
+  background: var(--surface-muted);
+  color: var(--text);
+}
+
+.btn-link {
+  text-decoration: none;
+  font-size: 13px;
+  color: var(--text-muted);
+  padding: 6px 10px;
+  border-radius: 8px;
+}
+.btn-link:hover {
+  background: var(--surface-muted);
+  color: var(--text);
+}
+
+.btn-primary {
+  background: var(--accent);
+  color: var(--accent-fg);
+  border: none;
+  border-radius: 8px;
+  padding: 8px 16px;
+  font-size: 13px;
+  font-weight: 500;
+  cursor: pointer;
+  transition: opacity 0.15s;
+}
+.btn-primary:disabled {
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
+/* ==========================================================================
+   Scrollable chat area
+   ========================================================================== */
+
+.scroll {
+  overflow-y: auto;
+  padding: 24px 20px 40px;
+}
+
+.thread {
+  max-width: 760px;
+  margin: 0 auto;
+  display: flex;
+  flex-direction: column;
+  gap: 20px;
+}
+
+.row {
+  display: flex;
+  width: 100%;
+}
+
+.row.user {
+  justify-content: flex-end;
+}
+
+.row.assistant {
+  justify-content: flex-start;
+}
+
+.bubble.user {
+  max-width: 85%;
+  padding: 10px 14px;
+  border-radius: 16px 16px 4px 16px;
+  background: var(--user-bubble-bg);
+  color: var(--user-bubble-fg);
+  font-size: 13px;
+  line-height: 1.5;
+  white-space: pre-wrap;
+}
+
+.assistant-inner {
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.assistant-text {
+  font-size: 13px;
+  line-height: 1.55;
+  white-space: pre-wrap;
+  color: var(--text);
+}
+
+.thinking {
+  font-size: 13px;
+  color: var(--text-muted);
+}
+
+/* Each rendered spec is wrapped in a structural container without any
+   visual chrome of its own — the AI-generated Card (or whatever the
+   root element is) carries the framing. `.thread` already provides the
+   gap between messages, so no outer border is needed here. */
+.spec-wrap {
+  width: 100%;
+}
+
+.error {
+  padding: 12px 14px;
+  border-radius: 10px;
+  border: 1px solid color-mix(in oklab, var(--warn) 40%, var(--border));
+  background: color-mix(in oklab, var(--warn) 10%, transparent);
+  color: var(--warn);
+  font-size: 13px;
+}
+
+/* ==========================================================================
+   Empty state
+   ========================================================================== */
+
+.empty {
+  min-height: 100%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 40px 0;
+}
+
+.empty-inner {
+  max-width: 720px;
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  gap: 20px;
+}
+
+.eyebrow {
+  font-size: 12px;
+  font-weight: 500;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+  color: var(--accent);
+}
+
+.empty h1 {
+  margin: 0;
+  font-size: 28px;
+  font-weight: 600;
+  letter-spacing: -0.01em;
+  line-height: 1.2;
+}
+
+.lead {
+  margin: 0;
+  font-size: 15px;
+  color: var(--text-muted);
+  line-height: 1.55;
+}
+
+.callout-row {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 12px;
+}
+@media (max-width: 620px) {
+  .callout-row {
+    grid-template-columns: 1fr;
+  }
+}
+
+.callout {
+  padding: 12px 14px;
+  border-radius: 10px;
+  border: 1px solid var(--border);
+  background: var(--surface);
+  font-size: 13px;
+  line-height: 1.5;
+}
+.callout .cap {
+  font-size: 11px;
+  font-weight: 500;
+  letter-spacing: 0.04em;
+  text-transform: uppercase;
+  color: var(--text-muted);
+  margin-bottom: 4px;
+}
+
+.sugg-grid {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 12px;
+  margin-top: 8px;
+}
+@media (max-width: 620px) {
+  .sugg-grid {
+    grid-template-columns: 1fr;
+  }
+}
+
+.sugg {
+  text-align: left;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: 12px;
+  padding: 14px;
+  cursor: pointer;
+  transition:
+    border-color 0.15s,
+    transform 0.05s;
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+.sugg:hover {
+  border-color: color-mix(in oklab, var(--accent) 40%, var(--border));
+}
+.sugg:active {
+  transform: translateY(1px);
+}
+
+.sugg-label {
+  font-size: 13px;
+  font-weight: 600;
+}
+
+.sugg-prompt {
+  font-size: 13px;
+  color: var(--text-muted);
+  line-height: 1.45;
+}
+
+.sugg-blurb {
+  font-size: 11px;
+  color: var(--accent);
+  margin-top: 4px;
+}
+
+/* ==========================================================================
+   Composer
+   ========================================================================== */
+
+.composer {
+  background: var(--surface);
+  border-top: 1px solid var(--border);
+  padding: 12px 20px 14px;
+}
+
+.composer-inner {
+  max-width: 760px;
+  margin: 0 auto;
+  display: flex;
+  gap: 8px;
+  align-items: flex-end;
+}
+
+.composer textarea {
+  flex: 1;
+  resize: none;
+  padding: 10px 12px;
+  border-radius: 10px;
+  border: 1px solid var(--border);
+  background: var(--surface);
+  color: var(--text);
+  font-size: 13px;
+  line-height: 1.5;
+  outline: none;
+  min-height: 58px;
+}
+.composer textarea:focus {
+  border-color: color-mix(in oklab, var(--accent) 50%, var(--border));
+}
+
+.composer .btn-primary {
+  padding: 10px 18px;
+  align-self: stretch;
+}
+
+.composer-hint {
+  max-width: 760px;
+  margin: 6px auto 0;
+  font-size: 11px;
+  color: var(--text-muted);
+}

examples/devtools/app/layout.tsx

@@ -0,0 +1,18 @@
+import type { Metadata } from "next";
+import "./globals.css";
+
+export const metadata: Metadata = {
+  title: "json-render devtools",
+  description:
+    "Interactive devtools demo: AI-streamed json-render specs, one renderer per chat message, all inspected by the floating panel.",
+};
+
+export default function RootLayout({
+  children,
+}: Readonly<{ children: React.ReactNode }>) {
+  return (
+    <html lang="en">
+      <body>{children}</body>
+    </html>
+  );
+}

examples/devtools/app/page.tsx

@@ -0,0 +1,356 @@
+"use client";
+
+import {
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+  type ReactNode,
+} from "react";
+import { useChat } from "@ai-sdk/react";
+import { DefaultChatTransport, type UIMessage } from "ai";
+import {
+  SPEC_DATA_PART,
+  type SpecDataPart,
+  type Spec,
+} from "@json-render/core";
+import {
+  JSONUIProvider,
+  Renderer,
+  buildSpecFromParts,
+  useJsonRenderMessage,
+  useStateStore,
+} from "@json-render/react";
+import { JsonRenderDevtools } from "@json-render/devtools-react";
+import { registry } from "@/lib/registry";
+import { catalog } from "@/lib/catalog";
+
+// Shared computed helpers the AI can reference with $computed. Keeping these
+// minimal avoids surprising the agent: +/-/toggle cover the most common cases.
+const computedFunctions = {
+  inc: (args: Record<string, unknown>) =>
+    ((args.of as number | undefined) ?? 0) +
+    ((args.by as number | undefined) ?? 1),
+  dec: (args: Record<string, unknown>) =>
+    ((args.of as number | undefined) ?? 0) -
+    ((args.by as number | undefined) ?? 1),
+  toggle: (args: Record<string, unknown>) => !(args.of as boolean | undefined),
+  add: (args: Record<string, unknown>) =>
+    ((args.a as number | undefined) ?? 0) +
+    ((args.b as number | undefined) ?? 0),
+};
+
+// ---------------------------------------------------------------------------
+// Types & transport
+// ---------------------------------------------------------------------------
+
+type AppDataParts = { [SPEC_DATA_PART]: SpecDataPart };
+type AppMessage = UIMessage<unknown, AppDataParts>;
+
+const transport = new DefaultChatTransport({ api: "/api/chat" });
+
+const SUGGESTIONS = [
+  {
+    label: "Counter",
+    prompt: "Build an interactive counter with +/- and reset buttons",
+    blurb: "Dispatches setState actions visible in the Actions panel.",
+  },
+  {
+    label: "Todo list",
+    prompt:
+      "Make a todo list where I can type a task, add it, mark it done, and remove it",
+    blurb: "Shows pushState / removeState and two-way bound inputs.",
+  },
+  {
+    label: "Dashboard",
+    prompt:
+      "Show me a fitness tracker with three metrics (steps, calories, sleep), progress bars, and a tip callout",
+    blurb: "Metrics + progress — good State and Stream panel content.",
+  },
+  {
+    label: "Quiz",
+    prompt:
+      "Quiz me on three world geography questions with checkboxes and a submit button that reveals my score",
+    blurb: "Bindings + conditional visibility in the Spec panel.",
+  },
+];
+
+// ---------------------------------------------------------------------------
+// MessageSpecRenderer — one <Renderer /> per assistant message, all wired
+// into the same top-level state store so the devtools sees everything.
+// ---------------------------------------------------------------------------
+
+function MessageSpecRenderer({ spec }: { spec: Spec }): ReactNode {
+  const { update, getSnapshot } = useStateStore();
+  const seeded = useRef<Set<string>>(new Set());
+
+  // Seed the shared store with this message's initial state the first time
+  // each top-level key appears. The AI is prompted to namespace every path
+  // with the message id, so keys from different messages never collide.
+  // We only seed keys that aren't already in the store, so live user edits
+  // aren't clobbered by late-arriving patches.
+  useEffect(() => {
+    const branch = spec.state as Record<string, unknown> | undefined;
+    if (!branch) return;
+    const current = getSnapshot() as Record<string, unknown>;
+    const updates: Record<string, unknown> = {};
+    for (const [key, value] of Object.entries(branch)) {
+      if (seeded.current.has(key)) continue;
+      seeded.current.add(key);
+      if (current[key] === undefined) {
+        updates[`/${key}`] = value;
+      }
+    }
+    if (Object.keys(updates).length > 0) {
+      update(updates);
+    }
+  }, [spec.state, update, getSnapshot]);
+
+  return (
+    <div className="spec-wrap">
+      <Renderer spec={spec} registry={registry} />
+    </div>
+  );
+}
+
+// ---------------------------------------------------------------------------
+// Bubbles
+// ---------------------------------------------------------------------------
+
+function UserBubble({ text }: { text: string }) {
+  return (
+    <div className="row user">
+      <div className="bubble user">{text}</div>
+    </div>
+  );
+}
+
+function AssistantBubble({
+  message,
+  isLast,
+  isStreaming,
+}: {
+  message: AppMessage;
+  isLast: boolean;
+  isStreaming: boolean;
+}) {
+  const { spec, text, hasSpec } = useJsonRenderMessage(message.parts);
+  const showThinking = isLast && isStreaming && !text && !hasSpec;
+
+  return (
+    <div className="row assistant">
+      <div className="assistant-inner">
+        {showThinking && <div className="thinking jr-shimmer">Thinking…</div>}
+        {text && <div className="assistant-text">{text}</div>}
+        {hasSpec && spec && <MessageSpecRenderer spec={spec} />}
+      </div>
+    </div>
+  );
+}
+
+// ---------------------------------------------------------------------------
+// Empty state
+// ---------------------------------------------------------------------------
+
+function EmptyState({ onPick }: { onPick: (prompt: string) => void }) {
+  return (
+    <div className="empty">
+      <div className="empty-inner">
+        <div className="eyebrow">json-render devtools</div>
+        <h1>Chat with AI, inspect every renderer.</h1>
+        <p className="lead">
+          Each assistant reply streams a fresh <code>Spec</code> rendered inline
+          below the message. One floating devtools panel captures every streamed
+          patch, state change, and dispatched action — across every message on
+          this page.
+        </p>
+        <div className="callout-row">
+          <div className="callout">
+            <div className="cap">Tip</div>
+            <div>
+              The panel is already open. Switch between Spec, State, Actions,
+              Stream, Catalog and Pick to see what each renderer exposes.
+            </div>
+          </div>
+          <div className="callout">
+            <div className="cap">Shortcut</div>
+            <div>
+              Toggle the panel with <kbd>⌘</kbd> <kbd>⇧</kbd> <kbd>J</kbd> or
+              click the <code>{"{}"}</code> badge.
+            </div>
+          </div>
+        </div>
+
+        <div className="sugg-grid">
+          {SUGGESTIONS.map((s) => (
+            <button
+              key={s.label}
+              type="button"
+              className="sugg"
+              onClick={() => onPick(s.prompt)}
+            >
+              <div className="sugg-label">{s.label}</div>
+              <div className="sugg-prompt">{s.prompt}</div>
+              <div className="sugg-blurb">{s.blurb}</div>
+            </button>
+          ))}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+// ---------------------------------------------------------------------------
+// Page
+// ---------------------------------------------------------------------------
+
+export default function Page() {
+  const [input, setInput] = useState("");
+  const listRef = useRef<HTMLDivElement>(null);
+  const taRef = useRef<HTMLTextAreaElement>(null);
+
+  const { messages, sendMessage, setMessages, status, error } =
+    useChat<AppMessage>({ transport });
+
+  const isStreaming = status === "streaming" || status === "submitted";
+
+  // The devtools Spec panel inspects one spec at a time; we show the most
+  // recent assistant message's spec as a sensible default.
+  const currentSpec = useMemo<Spec | null>(() => {
+    for (let i = messages.length - 1; i >= 0; i--) {
+      const m = messages[i];
+      if (m.role !== "assistant") continue;
+      const spec = buildSpecFromParts(m.parts);
+      if (spec) return spec;
+    }
+    return null;
+  }, [messages]);
+
+  const handleSubmit = useCallback(
+    (preset?: string) => {
+      const text = (preset ?? input).trim();
+      if (!text || isStreaming) return;
+      setInput("");
+      void sendMessage({ text });
+      taRef.current?.focus();
+    },
+    [input, isStreaming, sendMessage],
+  );
+
+  // Auto-scroll to bottom on new content.
+  useEffect(() => {
+    const el = listRef.current;
+    if (!el) return;
+    el.scrollTop = el.scrollHeight;
+  }, [messages, isStreaming]);
+
+  return (
+    <JSONUIProvider
+      registry={registry}
+      initialState={{}}
+      functions={computedFunctions}
+    >
+      <div className="app">
+        <header className="topbar">
+          <div className="topbar-brand">
+            <div className="logo-dot" aria-hidden />
+            <div className="topbar-text">
+              <div className="topbar-title">json-render devtools</div>
+              <div className="topbar-sub">
+                AI chat · shared state · one panel
+              </div>
+            </div>
+          </div>
+          <div className="topbar-actions">
+            {messages.length > 0 && (
+              <button
+                className="btn-ghost"
+                onClick={() => setMessages([])}
+                type="button"
+              >
+                Clear chat
+              </button>
+            )}
+            <a
+              className="btn-link"
+              href="https://json-render.dev/docs/devtools"
+              target="_blank"
+              rel="noreferrer"
+            >
+              Docs ↗
+            </a>
+          </div>
+        </header>
+
+        <main ref={listRef} className="scroll">
+          {messages.length === 0 ? (
+            <EmptyState onPick={(p) => handleSubmit(p)} />
+          ) : (
+            <div className="thread">
+              {messages.map((m, i) => {
+                const isLast = i === messages.length - 1;
+                if (m.role === "user") {
+                  const t = m.parts
+                    .filter((p) => p.type === "text")
+                    .map((p) => (p as { text: string }).text)
+                    .join("");
+                  return <UserBubble key={m.id} text={t} />;
+                }
+                return (
+                  <AssistantBubble
+                    key={m.id}
+                    message={m}
+                    isLast={isLast}
+                    isStreaming={isStreaming}
+                  />
+                );
+              })}
+              {error && <div className="error">{error.message}</div>}
+            </div>
+          )}
+        </main>
+
+        <div className="composer">
+          <div className="composer-inner">
+            <textarea
+              ref={taRef}
+              value={input}
+              onChange={(e) => setInput(e.target.value)}
+              onKeyDown={(e) => {
+                if (e.key === "Enter" && !e.shiftKey) {
+                  e.preventDefault();
+                  handleSubmit();
+                }
+              }}
+              placeholder={
+                messages.length === 0
+                  ? "Ask the AI to build a counter, a todo list, a dashboard…"
+                  : "Ask a follow-up…"
+              }
+              rows={2}
+            />
+            <button
+              type="button"
+              onClick={() => handleSubmit()}
+              disabled={!input.trim() || isStreaming}
+              className="btn-primary"
+            >
+              {isStreaming ? "…" : "Send"}
+            </button>
+          </div>
+          <div className="composer-hint">
+            Toggle devtools with <kbd>⌘</kbd> <kbd>⇧</kbd> <kbd>J</kbd>.
+          </div>
+        </div>
+      </div>
+
+      <JsonRenderDevtools
+        spec={currentSpec}
+        catalog={catalog}
+        messages={messages}
+        initialOpen
+      />
+    </JSONUIProvider>
+  );
+}

examples/devtools/eslint.config.js

@@ -0,0 +1,11 @@
+import { nextJsConfig } from "@internal/eslint-config/next-js";
+
+/** @type {import("eslint").Linter.Config[]} */
+export default [
+  ...nextJsConfig,
+  {
+    rules: {
+      "react/prop-types": "off",
+    },
+  },
+];