better visual

* rename modes

* improvements

* fixes

* fix homepage

.changeset/config.json

@@ -6,6 +6,7 @@
     [
       "@json-render/core",
       "@json-render/react",
+      "@json-render/react-email",
       "@json-render/react-pdf",
       "@json-render/shadcn",
       "@json-render/react-native",
@@ -16,7 +17,9 @@
       "@json-render/jotai",
       "@json-render/vue",
       "@json-render/xstate",
-      "@json-render/image"
+      "@json-render/image",
+      "@json-render/mcp",
+      "@json-render/svelte"
     ]
   ],
   "linked": [],

.cursor/mcp.json

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

.gitignore

@@ -4,6 +4,7 @@
 node_modules
 .pnp
 .pnp.js
+.pnpm-store/
 
 # Local env files
 .env*
@@ -27,6 +28,7 @@ out/
 build
 dist
 *.tsbuildinfo
+.svelte-kit/
 
 
 # Debug

.vscode/mcp.json

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

AGENTS.md

@@ -98,7 +98,7 @@ When asked to prepare a release (e.g. "prepare v0.12.0"):
    - 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/json-render-<name>/SKILL.md`
+   - 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
 

README.md

@@ -15,8 +15,12 @@ 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
 ```
 
 ## Why json-render?
@@ -26,7 +30,7 @@ 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 (web), React Native (mobile) from the same catalog
 - **Batteries Included** - 36 pre-built shadcn/ui components ready to use
 
 ## Quick Start
@@ -114,15 +118,19 @@ function Dashboard({ spec }) {
 | `@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/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/react-email` | React Email renderer for HTML/plain-text emails from specs |
 | `@json-render/image` | Image renderer for SVG/PNG output (OG images, social cards) via Satori |
+| `@json-render/codegen` | Utilities for generating code from json-render UI trees |
 | `@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 |
 
 ## Renderers
 
@@ -174,6 +182,23 @@ 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} />
+```
+
 ### shadcn/ui (Web)
 
 ```tsx
@@ -288,6 +313,40 @@ 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
@@ -422,10 +481,12 @@ 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): run `pnpm dev` in `examples/vite-renderers`
+- Vite Renderers (React + Vue + Svelte): run `pnpm dev` in `examples/vite-renderers`
 - React Native example: run `npx expo start` in `examples/react-native`
 
 ## How It Works

apps/web/CHANGELOG.md

@@ -1,5 +1,14 @@
 # web
 
+## 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

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 +75,7 @@ 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")
 }
 
 interface SpecValidationResult<T> {
@@ -370,7 +370,7 @@ 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 +389,7 @@ 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 +403,7 @@ 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
 

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/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/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/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/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/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

@@ -341,6 +341,8 @@ February 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

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:

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

@@ -309,10 +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.

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/skills/page.mdx

@@ -0,0 +1,117 @@
+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.
+- **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 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.
+
+## 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/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/image, @json-render/remotion, @json-render/codegen
+npm packages: @json-render/core, @json-render/react, @json-render/vue, @json-render/svelte, @json-render/shadcn, @json-render/react-native, @json-render/react-email, @json-render/react-pdf, @json-render/image, @json-render/remotion, @json-render/codegen, @json-render/mcp, @json-render/redux, @json-render/zustand, @json-render/jotai, @json-render/xstate
+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, react-pdf, react-email, react-native, shadcn, image, remotion, vue, svelte, codegen, mcp, redux, zustand, jotai, xstate. 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/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/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" },
     ],
@@ -65,6 +66,11 @@ export const docsNavigation: NavSection[] = [
         href: "https://github.com/vercel-labs/json-render/tree/main/examples/react-pdf",
         external: true,
       },
+      {
+        title: "React Email",
+        href: "https://github.com/vercel-labs/json-render/tree/main/examples/react-email",
+        external: true,
+      },
       {
         title: "Remotion",
         href: "https://github.com/vercel-labs/json-render/tree/main/examples/remotion",
@@ -75,16 +81,26 @@ export const docsNavigation: NavSection[] = [
         href: "https://github.com/vercel-labs/json-render/tree/main/examples/image",
         external: true,
       },
+      {
+        title: "Svelte",
+        href: "https://github.com/vercel-labs/json-render/tree/main/examples/svelte",
+        external: true,
+      },
       {
         title: "Vue",
         href: "https://github.com/vercel-labs/json-render/tree/main/examples/vue",
         external: true,
       },
       {
-        title: "Renders with Vite (Vue / React)",
+        title: "Renders with Vite (Vue / React / Svelte)",
         href: "https://github.com/vercel-labs/json-render/tree/main/examples/vite-renderers",
         external: true,
       },
+      {
+        title: "MCP App",
+        href: "https://github.com/vercel-labs/json-render/tree/main/examples/mcp",
+        external: true,
+      },
     ],
   },
   {
@@ -110,12 +126,19 @@ export const docsNavigation: NavSection[] = [
       { title: "@json-render/core", href: "/docs/api/core" },
       { title: "@json-render/react", href: "/docs/api/react" },
       { 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/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/vue", href: "/docs/api/vue" },
+      { title: "@json-render/svelte", href: "/docs/api/svelte" },
       { title: "@json-render/codegen", href: "/docs/api/codegen" },
+      { 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" },
     ],
   },
 ];

apps/web/lib/page-titles.ts

@@ -37,17 +37,25 @@ export const PAGE_TITLES: Record<string, string> = {
   "docs/ag-ui": "AG-UI Integration",
   "docs/migration": "Migration Guide",
   "docs/changelog": "Changelog",
+  "docs/skills": "Skills",
 
   // API references
   "docs/api/core": "@json-render/core API",
   "docs/api/react": "@json-render/react API",
   "docs/api/vue": "@json-render/vue 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/codegen": "@json-render/codegen API",
   "docs/api/image": "@json-render/image API",
   "docs/api/remotion": "@json-render/remotion API",
   "docs/api/shadcn": "@json-render/shadcn 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/xstate": "@json-render/xstate API",
 };
 
 /**

apps/web/package.json

@@ -1,10 +1,11 @@
 {
   "name": "web",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "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",

examples/chat/CHANGELOG.md

@@ -1,5 +1,14 @@
 # example-chat
 
+## 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

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/package.json

@@ -1,9 +1,10 @@
 {
   "name": "example-chat",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "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",

examples/dashboard/CHANGELOG.md

@@ -1,5 +1,14 @@
 # example-dashboard
 
+## 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

examples/dashboard/package.json

@@ -1,9 +1,10 @@
 {
   "name": "example-dashboard",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "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",

examples/image/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-image
 
+## 0.1.2
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/image@0.12.0
+
 ## 0.1.1
 
 ### Patch Changes

examples/image/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-image",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "type": "module",
   "private": true,
   "scripts": {

examples/mcp/CHANGELOG.md

@@ -0,0 +1,11 @@
+# example-mcp
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/mcp@0.12.0
+  - @json-render/react@0.12.0
+  - @json-render/shadcn@0.12.0

examples/mcp/README.md

@@ -0,0 +1,63 @@
+# MCP App Example
+
+A json-render MCP App that serves interactive shadcn/ui-based UIs directly inside Claude, ChatGPT, Cursor, VS Code, and other MCP-capable clients.
+
+## Setup
+
+```bash
+pnpm install
+pnpm build
+```
+
+## Usage
+
+### With Cursor
+
+Add to `.cursor/mcp.json`:
+
+```json
+{
+  "mcpServers": {
+    "json-render": {
+      "command": "npx",
+      "args": ["tsx", "examples/mcp/server.ts", "--stdio"]
+    }
+  }
+}
+```
+
+### With Claude Desktop
+
+Add to `~/Library/Application Support/Claude/claude_desktop_config.json`:
+
+```json
+{
+  "mcpServers": {
+    "json-render": {
+      "command": "npx",
+      "args": ["tsx", "/absolute/path/to/examples/mcp/server.ts", "--stdio"]
+    }
+  }
+}
+```
+
+### HTTP Transport
+
+```bash
+pnpm start
+# Server listens on http://localhost:3001/mcp
+```
+
+### Stdio Transport
+
+```bash
+pnpm start:stdio
+```
+
+## How It Works
+
+1. The Vite build bundles the React app (with shadcn components and `useJsonRenderApp` hook) into a single self-contained HTML file
+2. The MCP server registers a `render-ui` tool with the catalog prompt as its description
+3. When the LLM calls the tool, it generates a json-render spec constrained to the catalog
+4. The host renders the bundled HTML in a sandboxed iframe
+5. The iframe receives the spec via the MCP Apps protocol and renders it with json-render

examples/mcp/index.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline' 'unsafe-eval' data: blob:; img-src * data: blob:; font-src * data:; connect-src *; media-src *;" />
+  <title>json-render MCP App</title>
+</head>
+<body>
+  <div id="root"></div>
+  <script type="module" src="/src/main.tsx"></script>
+</body>
+</html>

examples/mcp/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "example-mcp",
+  "version": "0.1.1",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "build": "vite build",
+    "start": "tsx server.ts",
+    "start:stdio": "tsx server.ts --stdio",
+    "dev": "tsx watch server.ts"
+  },
+  "dependencies": {
+    "@json-render/core": "workspace:*",
+    "@json-render/mcp": "workspace:*",
+    "@json-render/react": "workspace:*",
+    "@json-render/shadcn": "workspace:*",
+    "@modelcontextprotocol/ext-apps": "^1.2.0",
+    "@modelcontextprotocol/sdk": "^1.27.1",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
+    "zod": "^4.3.6"
+  },
+  "devDependencies": {
+    "@types/react": "19.2.3",
+    "@types/react-dom": "19.2.3",
+    "@tailwindcss/vite": "^4.2.1",
+    "@vitejs/plugin-react": "^5.1.4",
+    "tailwindcss": "^4.2.1",
+    "tsx": "^4.21.0",
+    "typescript": "^5.7.2",
+    "vite": "^6.3.5",
+    "vite-plugin-singlefile": "^2.3.0"
+  }
+}

examples/mcp/server.ts

@@ -0,0 +1,86 @@
+import { createMcpApp } from "@json-render/mcp";
+import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
+import { StreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/streamableHttp.js";
+import { createMcpExpressApp } from "@modelcontextprotocol/sdk/server/express.js";
+import fs from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { catalog } from "./src/catalog.js";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+function loadHtml(): string {
+  const htmlPath = path.join(__dirname, "dist", "index.html");
+  if (!fs.existsSync(htmlPath)) {
+    throw new Error(
+      `Built HTML not found at ${htmlPath}. Run 'pnpm build' first.`,
+    );
+  }
+  return fs.readFileSync(htmlPath, "utf-8");
+}
+
+async function startStdio() {
+  const html = loadHtml();
+  const server = await createMcpApp({
+    name: "json-render Example",
+    version: "1.0.0",
+    catalog,
+    html,
+  });
+  await server.connect(new StdioServerTransport());
+}
+
+async function startHttp() {
+  const html = loadHtml();
+  const port = parseInt(process.env.PORT ?? "3001", 10);
+
+  const expressApp = createMcpExpressApp({ host: "0.0.0.0" });
+
+  expressApp.all("/mcp", async (req, res) => {
+    const server = await createMcpApp({
+      name: "json-render Example",
+      version: "1.0.0",
+      catalog,
+      html,
+    });
+
+    const transport = new StreamableHTTPServerTransport({
+      sessionIdGenerator: undefined,
+    });
+
+    res.on("close", () => {
+      transport.close().catch(() => {});
+      server.close().catch(() => {});
+    });
+
+    try {
+      await server.connect(transport);
+      await transport.handleRequest(req, res, req.body);
+    } catch (error) {
+      console.error("MCP error:", error);
+      if (!res.headersSent) {
+        res.status(500).json({
+          jsonrpc: "2.0",
+          error: { code: -32603, message: "Internal server error" },
+          id: null,
+        });
+      }
+    }
+  });
+
+  expressApp.listen(port, () => {
+    console.log(`MCP server listening on http://localhost:${port}/mcp`);
+  });
+}
+
+if (process.argv.includes("--stdio")) {
+  startStdio().catch((e) => {
+    console.error(e);
+    process.exit(1);
+  });
+} else {
+  startHttp().catch((e) => {
+    console.error(e);
+    process.exit(1);
+  });
+}

examples/mcp/src/catalog.ts

@@ -0,0 +1,10 @@
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/react/schema";
+import { shadcnComponentDefinitions } from "@json-render/shadcn/catalog";
+
+export const catalog = defineCatalog(schema, {
+  components: {
+    ...shadcnComponentDefinitions,
+  },
+  actions: {},
+});

examples/mcp/src/globals.css

@@ -0,0 +1,106 @@
+@import "tailwindcss";
+@source "../../../packages/shadcn/src";
+@source "../../../packages/react/src";
+
+@custom-variant dark (&:is([data-theme="dark"] *));
+
+@theme inline {
+  --radius-sm: calc(var(--radius) - 4px);
+  --radius-md: calc(var(--radius) - 2px);
+  --radius-lg: var(--radius);
+  --radius-xl: calc(var(--radius) + 4px);
+  --radius-2xl: calc(var(--radius) + 8px);
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --color-card: var(--card);
+  --color-card-foreground: var(--card-foreground);
+  --color-popover: var(--popover);
+  --color-popover-foreground: var(--popover-foreground);
+  --color-primary: var(--primary);
+  --color-primary-foreground: var(--primary-foreground);
+  --color-secondary: var(--secondary);
+  --color-secondary-foreground: var(--secondary-foreground);
+  --color-muted: var(--muted);
+  --color-muted-foreground: var(--muted-foreground);
+  --color-accent: var(--accent);
+  --color-accent-foreground: var(--accent-foreground);
+  --color-destructive: var(--destructive);
+  --color-border: var(--border);
+  --color-input: var(--input);
+  --color-ring: var(--ring);
+}
+
+:root {
+  --radius: 0.625rem;
+  --background: oklch(1 0 0);
+  --foreground: oklch(0.145 0 0);
+  --card: oklch(1 0 0);
+  --card-foreground: oklch(0.145 0 0);
+  --popover: oklch(1 0 0);
+  --popover-foreground: oklch(0.145 0 0);
+  --primary: oklch(0.205 0 0);
+  --primary-foreground: oklch(0.985 0 0);
+  --secondary: oklch(0.97 0 0);
+  --secondary-foreground: oklch(0.205 0 0);
+  --muted: oklch(0.97 0 0);
+  --muted-foreground: oklch(0.556 0 0);
+  --accent: oklch(0.97 0 0);
+  --accent-foreground: oklch(0.205 0 0);
+  --destructive: oklch(0.577 0.245 27.325);
+  --border: oklch(0.922 0 0);
+  --input: oklch(0.922 0 0);
+  --ring: oklch(0.708 0 0);
+}
+
+[data-theme="dark"] {
+  --background: var(--color-background-secondary, var(--vscode-editor-background, oklch(0.145 0 0)));
+  --foreground: var(--color-text-primary, var(--vscode-foreground, oklch(0.985 0 0)));
+  --card: var(--color-background-primary, var(--vscode-sideBar-background, oklch(0.205 0 0)));
+  --card-foreground: var(--color-text-primary, var(--vscode-foreground, oklch(0.985 0 0)));
+  --popover: var(--color-background-primary, var(--vscode-sideBar-background, oklch(0.205 0 0)));
+  --popover-foreground: var(--color-text-primary, var(--vscode-foreground, oklch(0.985 0 0)));
+  --primary: var(--color-text-primary, var(--vscode-foreground, oklch(0.922 0 0)));
+  --primary-foreground: var(--color-background-primary, var(--vscode-sideBar-background, oklch(0.205 0 0)));
+  --secondary: var(--color-background-tertiary, var(--vscode-activityBar-background, oklch(0.269 0 0)));
+  --secondary-foreground: var(--color-text-primary, var(--vscode-foreground, oklch(0.985 0 0)));
+  --muted: var(--color-background-tertiary, var(--vscode-activityBar-background, oklch(0.269 0 0)));
+  --muted-foreground: var(--color-text-secondary, var(--vscode-descriptionForeground, oklch(0.708 0 0)));
+  --accent: var(--color-background-tertiary, var(--vscode-activityBar-background, oklch(0.269 0 0)));
+  --accent-foreground: var(--color-text-primary, var(--vscode-foreground, oklch(0.985 0 0)));
+  --destructive: var(--color-text-danger, var(--vscode-errorForeground, oklch(0.704 0.191 22.216)));
+  --border: var(--color-border-primary, var(--vscode-widget-border, oklch(1 0 0 / 10%)));
+  --input: var(--color-border-secondary, var(--vscode-editorWidget-border, oklch(1 0 0 / 15%)));
+  --ring: var(--color-ring-primary, var(--vscode-focusBorder, oklch(0.556 0 0)));
+}
+
+* {
+  box-sizing: border-box;
+  border-color: var(--color-border);
+}
+
+html, body, #root {
+  width: 100%;
+  height: 100%;
+  margin: 0;
+  padding: 0;
+}
+
+body {
+  background-color: var(--color-background);
+  color: var(--color-foreground);
+  font-family: var(--vscode-font-family, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
+}
+
+@layer base {
+  * {
+    @apply border-border outline-ring/50;
+  }
+  body {
+    @apply text-foreground;
+    background-color: var(--color-background) !important;
+  }
+}
+
+button {
+  cursor: pointer;
+}

examples/mcp/src/main.tsx

@@ -0,0 +1,269 @@
+import "./globals.css";
+import {
+  Component,
+  useState,
+  useEffect,
+  useCallback,
+  type ReactNode,
+} from "react";
+import { createRoot } from "react-dom/client";
+import { App as McpApp } from "@modelcontextprotocol/ext-apps";
+import { JSONUIProvider, Renderer, defineRegistry } from "@json-render/react";
+import { shadcnComponents } from "@json-render/shadcn";
+import type { Spec } from "@json-render/core";
+import { catalog } from "./catalog";
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    ...shadcnComponents,
+    Avatar: ({ props }: { props: Record<string, unknown> }) => {
+      const name = (props.name as string) || (props.alt as string) || "?";
+      const src = props.src as string | undefined;
+      const initials = name
+        .split(" ")
+        .map((n) => n[0])
+        .join("")
+        .slice(0, 2)
+        .toUpperCase();
+      const size = props.size === "lg" ? 48 : props.size === "sm" ? 32 : 40;
+      const [imgFailed, setImgFailed] = useState(false);
+      const onError = useCallback(() => setImgFailed(true), []);
+      const showImg = src && !imgFailed;
+
+      return (
+        <div
+          style={{
+            width: size,
+            height: size,
+            borderRadius: "50%",
+            overflow: "hidden",
+            backgroundColor: "var(--color-background-tertiary, #27272a)",
+            display: "flex",
+            alignItems: "center",
+            justifyContent: "center",
+            flexShrink: 0,
+          }}
+        >
+          {showImg ? (
+            <img
+              src={src}
+              alt={name}
+              referrerPolicy="no-referrer"
+              crossOrigin="anonymous"
+              width={size}
+              height={size}
+              onError={onError}
+              style={{ objectFit: "cover", width: size, height: size }}
+            />
+          ) : (
+            <span
+              style={{
+                fontSize: size * 0.4,
+                color: "var(--color-text-secondary, #a1a1aa)",
+              }}
+            >
+              {initials}
+            </span>
+          )}
+        </div>
+      );
+    },
+  },
+});
+
+class ErrorBoundary extends Component<
+  { children: ReactNode },
+  { error: Error | null }
+> {
+  state = { error: null as Error | null };
+  static getDerivedStateFromError(error: Error) {
+    return { error };
+  }
+  render() {
+    if (this.state.error) {
+      return (
+        <div
+          style={{
+            padding: 16,
+            color: "#dc2626",
+            fontFamily: "monospace",
+            fontSize: 13,
+          }}
+        >
+          Error: {this.state.error.message}
+        </div>
+      );
+    }
+    return this.props.children;
+  }
+}
+
+function forceFullWidth(spec: Spec): Spec {
+  if (!spec.elements) return spec;
+  const elements = { ...spec.elements };
+  for (const [key, el] of Object.entries(elements)) {
+    if (el.type === "Card" && el.props) {
+      elements[key] = {
+        ...el,
+        props: { ...el.props, maxWidth: "full", centered: false },
+      };
+    }
+  }
+  return { ...spec, elements };
+}
+
+function parseSpec(
+  result: { content?: Array<{ type: string; text?: string }> } | undefined,
+): Spec | null {
+  const text = result?.content?.find((c) => c.type === "text")?.text;
+  if (!text) return null;
+  try {
+    return forceFullWidth(JSON.parse(text) as Spec);
+  } catch {
+    return null;
+  }
+}
+
+function applyHostContext(ctx: {
+  theme?: string;
+  styles?: { variables?: Record<string, string> };
+}) {
+  if (ctx.theme) {
+    document.documentElement.setAttribute("data-theme", ctx.theme);
+    document.documentElement.style.colorScheme = ctx.theme;
+  }
+  if (ctx.styles?.variables) {
+    const root = document.documentElement;
+    for (const [key, value] of Object.entries(ctx.styles.variables)) {
+      root.style.setProperty(key, value);
+    }
+  }
+}
+
+function McpAppView() {
+  const [spec, setSpec] = useState<Spec | null>(null);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    let specReceived = false;
+
+    function handleSpec(s: Spec) {
+      if (specReceived) return;
+      specReceived = true;
+      setSpec(s);
+    }
+
+    function onMessage(event: MessageEvent) {
+      if (specReceived) return;
+      const data = event.data as Record<string, unknown> | undefined;
+      if (!data || typeof data !== "object") return;
+      const method = data.method as string | undefined;
+      const params = data.params as Record<string, unknown> | undefined;
+
+      // Cursor sends the spec via tool-input
+      if (method === "ui/notifications/tool-input" && params?.arguments) {
+        const args = params.arguments as Record<string, unknown>;
+        const rawSpec = args.spec;
+        if (
+          rawSpec &&
+          typeof rawSpec === "object" &&
+          "root" in rawSpec &&
+          "elements" in rawSpec
+        ) {
+          handleSpec(forceFullWidth(rawSpec as Spec));
+        }
+      }
+    }
+    window.addEventListener("message", onMessage);
+
+    const app = new McpApp({ name: "json-render", version: "1.0.0" });
+
+    app.ontoolresult = (result) => {
+      const parsed = parseSpec(
+        result as { content?: Array<{ type: string; text?: string }> },
+      );
+      if (parsed) handleSpec(parsed);
+    };
+
+    app.onhostcontextchanged = (ctx) =>
+      applyHostContext(ctx as Parameters<typeof applyHostContext>[0]);
+
+    app.onerror = (err: unknown) => {
+      setError(err instanceof Error ? err.message : String(err));
+    };
+
+    app
+      .connect()
+      .then(() => {
+        const ctx = app.getHostContext?.();
+        if (ctx)
+          applyHostContext(ctx as Parameters<typeof applyHostContext>[0]);
+
+        // Fallback: if host didn't provide theme, detect via media query
+        if (!ctx || !(ctx as Record<string, unknown>).theme) {
+          const prefersDark = window.matchMedia(
+            "(prefers-color-scheme: dark)",
+          ).matches;
+          document.documentElement.setAttribute(
+            "data-theme",
+            prefersDark ? "dark" : "light",
+          );
+          document.documentElement.style.colorScheme = prefersDark
+            ? "dark"
+            : "light";
+        }
+      })
+      .catch((err: unknown) =>
+        setError(err instanceof Error ? err.message : String(err)),
+      );
+
+    return () => {
+      window.removeEventListener("message", onMessage);
+      app.close().catch(() => {});
+    };
+  }, []);
+
+  if (error) {
+    return (
+      <div
+        style={{
+          padding: 16,
+          color: "#dc2626",
+          fontFamily: "monospace",
+          fontSize: 13,
+        }}
+      >
+        {error}
+      </div>
+    );
+  }
+
+  if (!spec) {
+    return (
+      <div
+        style={{
+          padding: 16,
+          color: "#6b7280",
+          fontFamily: "sans-serif",
+          fontSize: 14,
+        }}
+      >
+        Loading...
+      </div>
+    );
+  }
+
+  return (
+    <JSONUIProvider registry={registry} initialState={spec.state ?? {}}>
+      <div className="w-full">
+        <Renderer spec={spec} registry={registry} />
+      </div>
+    </JSONUIProvider>
+  );
+}
+
+createRoot(document.getElementById("root")!).render(
+  <ErrorBoundary>
+    <McpAppView />
+  </ErrorBoundary>,
+);

examples/mcp/src/mcp-app-view.tsx

@@ -0,0 +1,89 @@
+import { JSONUIProvider, Renderer } from "@json-render/react";
+import { shadcnComponents } from "@json-render/shadcn";
+import { defineRegistry } from "@json-render/react";
+import { useJsonRenderApp } from "@json-render/mcp/app";
+import { catalog } from "./catalog";
+import { useState, useEffect } from "react";
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    ...shadcnComponents,
+  },
+});
+
+const debugStyle = {
+  padding: 12,
+  fontFamily: "monospace",
+  fontSize: 12,
+  color: "#000",
+  background: "#fffbe6",
+  border: "1px solid #faad14",
+  borderRadius: 4,
+  margin: 8,
+  whiteSpace: "pre-wrap" as const,
+  wordBreak: "break-all" as const,
+};
+
+export function McpAppView() {
+  const [logs, setLogs] = useState<string[]>(["App mounted"]);
+
+  const addLog = (msg: string) => {
+    setLogs((prev) => [
+      ...prev,
+      `${new Date().toISOString().slice(11, 23)} ${msg}`,
+    ]);
+  };
+
+  const { spec, loading, connected, connecting, error } = useJsonRenderApp({
+    name: "json-render-mcp-example",
+    version: "1.0.0",
+  });
+
+  useEffect(() => {
+    addLog(
+      `State: connecting=${connecting} connected=${connected} error=${error?.message ?? "none"} loading=${loading} spec=${spec ? "yes" : "null"}`,
+    );
+  }, [connecting, connected, error, loading, spec]);
+
+  useEffect(() => {
+    if (spec) {
+      addLog(
+        `Spec received: root=${spec.root}, elements=${Object.keys(spec.elements ?? {}).join(",")}`,
+      );
+    }
+  }, [spec]);
+
+  if (error) {
+    return (
+      <div style={debugStyle}>
+        <div style={{ color: "#ef4444", fontWeight: "bold" }}>
+          Connection error: {error.message}
+        </div>
+        <div style={{ marginTop: 8 }}>{logs.join("\n")}</div>
+      </div>
+    );
+  }
+
+  if (!spec) {
+    return (
+      <div style={debugStyle}>
+        <div>
+          {connecting
+            ? "Connecting to host..."
+            : loading
+              ? "Waiting for UI spec..."
+              : "No spec received."}
+        </div>
+        <div style={{ marginTop: 8 }}>{logs.join("\n")}</div>
+      </div>
+    );
+  }
+
+  return (
+    <div>
+      <JSONUIProvider registry={registry} initialState={spec.state ?? {}}>
+        <Renderer spec={spec} registry={registry} loading={loading} />
+      </JSONUIProvider>
+    </div>
+  );
+}

examples/mcp/tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "verbatimModuleSyntax": true,
+    "noEmit": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "jsx": "react-jsx"
+  },
+  "include": ["src", "server.ts"]
+}

examples/mcp/vite.config.ts

@@ -0,0 +1,18 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+import { viteSingleFile } from "vite-plugin-singlefile";
+import tailwindcss from "@tailwindcss/vite";
+
+export default defineConfig({
+  plugins: [react(), tailwindcss(), viteSingleFile()],
+  resolve: {
+    dedupe: ["react", "react-dom"],
+  },
+  build: {
+    outDir: "dist",
+    emptyOutDir: false,
+    rollupOptions: {
+      input: "index.html",
+    },
+  },
+});

examples/no-ai/CHANGELOG.md

@@ -1,5 +1,14 @@
 # example-no-ai
 
+## 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

examples/no-ai/package.json

@@ -1,9 +1,10 @@
 {
   "name": "example-no-ai",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "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 no-ai-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",

examples/react-email/.env.example

@@ -0,0 +1,9 @@
+# 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
+# Override the default model used for email generation
+# Default: anthropic/claude-haiku-4.5
+AI_GATEWAY_MODEL=anthropic/claude-haiku-4.5

examples/react-email/CHANGELOG.md

@@ -0,0 +1,9 @@
+# example-react-email
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/react-email@0.12.0

examples/react-email/app/api/email/route.ts

@@ -0,0 +1,47 @@
+import {
+  renderToHtml,
+  renderToPlainText,
+} from "@json-render/react-email/render";
+import { examples } from "@/lib/examples";
+import type { Spec } from "@json-render/core";
+
+export async function GET(req: Request) {
+  const { searchParams } = new URL(req.url);
+  const name = searchParams.get("name") ?? "vercel-invite";
+  const plain = searchParams.get("plain") === "1";
+
+  const example = examples.find((e) => e.name === name);
+  if (!example) {
+    return new Response("Example not found", { status: 404 });
+  }
+
+  return emailResponse(example.spec, plain);
+}
+
+export async function POST(req: Request) {
+  const { spec, plain } = (await req.json()) as {
+    spec: Spec;
+    plain?: boolean;
+  };
+
+  if (!spec || !spec.root || !spec.elements) {
+    return new Response("Invalid spec", { status: 400 });
+  }
+
+  return emailResponse(spec, plain ?? false);
+}
+
+async function emailResponse(spec: Spec, plain: boolean) {
+  const content = plain
+    ? await renderToPlainText(spec)
+    : await renderToHtml(spec);
+
+  return new Response(content, {
+    headers: {
+      "Content-Type": plain
+        ? "text/plain; charset=utf-8"
+        : "text/html; charset=utf-8",
+      "Cache-Control": "no-store",
+    },
+  });
+}

examples/react-email/app/api/generate/route.ts

@@ -0,0 +1,34 @@
+import { streamText } from "ai";
+import { buildUserPrompt, type Spec } from "@json-render/core";
+import { emailCatalog } from "@/lib/catalog";
+
+export const maxDuration = 60;
+
+const SYSTEM_PROMPT = emailCatalog.prompt();
+
+const DEFAULT_MODEL = "anthropic/claude-haiku-4.5";
+
+export async function POST(req: Request) {
+  const { prompt, startingSpec } = (await req.json()) as {
+    prompt: string;
+    startingSpec?: Spec | null;
+  };
+
+  if (!prompt || typeof prompt !== "string") {
+    return Response.json({ error: "prompt is required" }, { status: 400 });
+  }
+
+  const userPrompt = buildUserPrompt({
+    prompt,
+    currentSpec: startingSpec,
+  });
+
+  const result = streamText({
+    model: process.env.AI_GATEWAY_MODEL ?? DEFAULT_MODEL,
+    system: SYSTEM_PROMPT,
+    prompt: userPrompt,
+    temperature: 0.7,
+  });
+
+  return result.toTextStreamResponse();
+}

examples/react-email/app/globals.css

@@ -0,0 +1,130 @@
+@import "tailwindcss";
+@import "tw-animate-css";
+@import "shadcn/tailwind.css";
+
+@custom-variant dark (&:is(.dark *));
+
+@theme inline {
+    --radius-sm: calc(var(--radius) - 4px);
+    --radius-md: calc(var(--radius) - 2px);
+    --radius-lg: var(--radius);
+    --radius-xl: calc(var(--radius) + 4px);
+    --radius-2xl: calc(var(--radius) + 8px);
+    --radius-3xl: calc(var(--radius) + 12px);
+    --radius-4xl: calc(var(--radius) + 16px);
+    --color-background: var(--background);
+    --color-foreground: var(--foreground);
+    --color-card: var(--card);
+    --color-card-foreground: var(--card-foreground);
+    --color-popover: var(--popover);
+    --color-popover-foreground: var(--popover-foreground);
+    --color-primary: var(--primary);
+    --color-primary-foreground: var(--primary-foreground);
+    --color-secondary: var(--secondary);
+    --color-secondary-foreground: var(--secondary-foreground);
+    --color-muted: var(--muted);
+    --color-muted-foreground: var(--muted-foreground);
+    --color-accent: var(--accent);
+    --color-accent-foreground: var(--accent-foreground);
+    --color-destructive: var(--destructive);
+    --color-border: var(--border);
+    --color-input: var(--input);
+    --color-ring: var(--ring);
+    --color-chart-1: var(--chart-1);
+    --color-chart-2: var(--chart-2);
+    --color-chart-3: var(--chart-3);
+    --color-chart-4: var(--chart-4);
+    --color-chart-5: var(--chart-5);
+    --color-sidebar: var(--sidebar);
+    --color-sidebar-foreground: var(--sidebar-foreground);
+    --color-sidebar-primary: var(--sidebar-primary);
+    --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
+    --color-sidebar-accent: var(--sidebar-accent);
+    --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
+    --color-sidebar-border: var(--sidebar-border);
+    --color-sidebar-ring: var(--sidebar-ring);
+}
+
+:root {
+    --radius: 0.625rem;
+    --background: oklch(1 0 0);
+    --foreground: oklch(0.145 0 0);
+    --card: oklch(1 0 0);
+    --card-foreground: oklch(0.145 0 0);
+    --popover: oklch(1 0 0);
+    --popover-foreground: oklch(0.145 0 0);
+    --primary: oklch(0.205 0 0);
+    --primary-foreground: oklch(0.985 0 0);
+    --secondary: oklch(0.97 0 0);
+    --secondary-foreground: oklch(0.205 0 0);
+    --muted: oklch(0.97 0 0);
+    --muted-foreground: oklch(0.556 0 0);
+    --accent: oklch(0.97 0 0);
+    --accent-foreground: oklch(0.205 0 0);
+    --destructive: oklch(0.577 0.245 27.325);
+    --border: oklch(0.922 0 0);
+    --input: oklch(0.922 0 0);
+    --ring: oklch(0.708 0 0);
+    --chart-1: oklch(0.646 0.222 41.116);
+    --chart-2: oklch(0.6 0.118 184.704);
+    --chart-3: oklch(0.398 0.07 227.392);
+    --chart-4: oklch(0.828 0.189 84.429);
+    --chart-5: oklch(0.769 0.188 70.08);
+    --sidebar: oklch(0.985 0 0);
+    --sidebar-foreground: oklch(0.145 0 0);
+    --sidebar-primary: oklch(0.205 0 0);
+    --sidebar-primary-foreground: oklch(0.985 0 0);
+    --sidebar-accent: oklch(0.97 0 0);
+    --sidebar-accent-foreground: oklch(0.205 0 0);
+    --sidebar-border: oklch(0.922 0 0);
+    --sidebar-ring: oklch(0.708 0 0);
+}
+
+.dark {
+    --background: oklch(0.145 0 0);
+    --foreground: oklch(0.985 0 0);
+    --card: oklch(0.205 0 0);
+    --card-foreground: oklch(0.985 0 0);
+    --popover: oklch(0.205 0 0);
+    --popover-foreground: oklch(0.985 0 0);
+    --primary: oklch(0.922 0 0);
+    --primary-foreground: oklch(0.205 0 0);
+    --secondary: oklch(0.269 0 0);
+    --secondary-foreground: oklch(0.985 0 0);
+    --muted: oklch(0.269 0 0);
+    --muted-foreground: oklch(0.708 0 0);
+    --accent: oklch(0.269 0 0);
+    --accent-foreground: oklch(0.985 0 0);
+    --destructive: oklch(0.704 0.191 22.216);
+    --border: oklch(1 0 0 / 10%);
+    --input: oklch(1 0 0 / 15%);
+    --ring: oklch(0.556 0 0);
+    --chart-1: oklch(0.488 0.243 264.376);
+    --chart-2: oklch(0.696 0.17 162.48);
+    --chart-3: oklch(0.769 0.188 70.08);
+    --chart-4: oklch(0.627 0.265 303.9);
+    --chart-5: oklch(0.645 0.246 16.439);
+    --sidebar: oklch(0.205 0 0);
+    --sidebar-foreground: oklch(0.985 0 0);
+    --sidebar-primary: oklch(0.488 0.243 264.376);
+    --sidebar-primary-foreground: oklch(0.985 0 0);
+    --sidebar-accent: oklch(0.269 0 0);
+    --sidebar-accent-foreground: oklch(0.985 0 0);
+    --sidebar-border: oklch(1 0 0 / 10%);
+    --sidebar-ring: oklch(0.556 0 0);
+}
+
+@layer base {
+  * {
+    @apply border-border outline-ring/50;
+  }
+  body {
+    @apply bg-background text-foreground;
+  }
+}
+
+@keyframes spin {
+  to {
+    transform: rotate(360deg);
+  }
+}

examples/react-email/app/layout.tsx

@@ -0,0 +1,23 @@
+import type { Metadata } from "next";
+import { Inter } from "next/font/google";
+import "./globals.css";
+
+const inter = Inter({ subsets: ["latin"] });
+
+export const metadata: Metadata = {
+  title: "json-render React Email Example",
+  description:
+    "Generate HTML emails from JSON specs with @json-render/react-email",
+};
+
+export default function RootLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return (
+    <html lang="en">
+      <body className={inter.className}>{children}</body>
+    </html>
+  );
+}

examples/react-email/app/page.tsx

@@ -0,0 +1,608 @@
+"use client";
+
+import { useState, useCallback, useRef, useEffect } from "react";
+import { examples } from "@/lib/examples";
+import { createSpecStreamCompiler } from "@json-render/core";
+import type { Spec } from "@json-render/core";
+import { cn } from "@/lib/utils";
+
+import { ScrollArea } from "@/components/ui/scroll-area";
+import { Sheet, SheetContent, SheetTitle } from "@/components/ui/sheet";
+import {
+  ResizablePanelGroup,
+  ResizablePanel,
+  ResizableHandle,
+} from "@/components/ui/resizable";
+import { FileText, Download, Loader2, ArrowRight, Square } from "lucide-react";
+
+type Mode = "scratch" | "example";
+type MobileView = "json" | "preview";
+
+interface Selection {
+  mode: Mode;
+  exampleName?: string;
+}
+
+const HTML_REFRESH_INTERVAL_MS = 2000;
+
+function CopyButton({ text }: { text: string }) {
+  const [copied, setCopied] = useState(false);
+
+  return (
+    <button
+      onClick={() => {
+        navigator.clipboard.writeText(text);
+        setCopied(true);
+        setTimeout(() => setCopied(false), 1500);
+      }}
+      className="text-xs text-muted-foreground hover:text-foreground transition-colors font-mono"
+    >
+      {copied ? "copied" : "copy"}
+    </button>
+  );
+}
+
+function isRenderableSpec(spec: Spec | null): spec is Spec {
+  if (!spec?.root || !spec.elements) return false;
+  const root = spec.elements[spec.root];
+  if (!root) return false;
+  if (root.type !== "Html" || !root.children?.length) return false;
+  const childTypes = root.children.map((id) => spec.elements[id]?.type);
+  return childTypes.includes("Head") || childTypes.includes("Body");
+}
+
+export default function Page() {
+  const [selection, setSelection] = useState<Selection>({
+    mode: "example",
+    exampleName: examples[0]!.name,
+  });
+  const [prompt, setPrompt] = useState("");
+  const [generating, setGenerating] = useState(false);
+  const [generatedSpec, setGeneratedSpec] = useState<Spec | null>(null);
+  const [htmlContent, setHtmlContent] = useState<string | null>(null);
+  const [error, setError] = useState<string | null>(null);
+  const [mobileView, setMobileView] = useState<MobileView>("preview");
+  const [examplesSheetOpen, setExamplesSheetOpen] = useState(false);
+  const [refreshing, setRefreshing] = useState(false);
+  const inputRef = useRef<HTMLTextAreaElement>(null);
+  const mobileInputRef = useRef<HTMLTextAreaElement>(null);
+  const abortRef = useRef<AbortController | null>(null);
+  const codeScrollRef = useRef<HTMLDivElement>(null);
+  const mobileCodeScrollRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    if (!generating) return;
+    codeScrollRef.current?.scrollTo({
+      top: codeScrollRef.current.scrollHeight,
+    });
+    mobileCodeScrollRef.current?.scrollTo({
+      top: mobileCodeScrollRef.current.scrollHeight,
+    });
+  }, [generating, generatedSpec]);
+
+  const currentExample =
+    selection.mode === "example"
+      ? examples.find((e) => e.name === selection.exampleName)
+      : null;
+
+  const activeSpec = generatedSpec ?? currentExample?.spec ?? null;
+
+  useEffect(() => {
+    inputRef.current?.focus();
+  }, [selection.mode, selection.exampleName]);
+
+  const fetchHtml = useCallback(async (spec: Spec, signal?: AbortSignal) => {
+    const res = await fetch("/api/email", {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ spec }),
+      signal,
+    });
+    if (!res.ok) throw new Error("Failed to render email");
+    const html = await res.text();
+    setHtmlContent(html);
+  }, []);
+
+  // Fetch HTML for example specs on selection change
+  useEffect(() => {
+    if (selection.mode !== "example" || !currentExample || generatedSpec)
+      return;
+    fetchHtml(currentExample.spec).catch(() => {});
+  }, [selection.mode, currentExample, generatedSpec, fetchHtml]);
+
+  // Progressive HTML refresh during generation
+  const lastRefreshSpec = useRef<string>("");
+  const generatedSpecRef = useRef<Spec | null>(null);
+  generatedSpecRef.current = generatedSpec;
+
+  useEffect(() => {
+    if (!generating) return;
+
+    const interval = setInterval(() => {
+      const spec = generatedSpecRef.current;
+      if (!spec) return;
+
+      const specKey = JSON.stringify(spec);
+      if (specKey === lastRefreshSpec.current) return;
+      if (!isRenderableSpec(spec)) return;
+
+      lastRefreshSpec.current = specKey;
+      setRefreshing(true);
+      fetchHtml(spec)
+        .catch(() => {})
+        .finally(() => setRefreshing(false));
+    }, HTML_REFRESH_INTERVAL_MS);
+
+    return () => clearInterval(interval);
+  }, [generating, fetchHtml]);
+
+  const handleGenerate = useCallback(async () => {
+    if (!prompt.trim()) return;
+
+    abortRef.current?.abort();
+    const controller = new AbortController();
+    abortRef.current = controller;
+
+    setGenerating(true);
+    setError(null);
+    lastRefreshSpec.current = "";
+
+    try {
+      const startingSpec =
+        selection.mode === "example" && currentExample
+          ? currentExample.spec
+          : null;
+
+      const res = await fetch("/api/generate", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ prompt: prompt.trim(), startingSpec }),
+        signal: controller.signal,
+      });
+      if (!res.ok) throw new Error("Generation failed");
+
+      const reader = res.body?.getReader();
+      if (!reader) throw new Error("No response body");
+
+      const decoder = new TextDecoder();
+      const compiler = createSpecStreamCompiler<Spec>(
+        startingSpec ? { ...startingSpec } : {},
+      );
+
+      while (true) {
+        const { done, value } = await reader.read();
+        if (done) break;
+        const chunk = decoder.decode(value, { stream: true });
+        const { result, newPatches } = compiler.push(chunk);
+        if (newPatches.length > 0) setGeneratedSpec(result);
+      }
+
+      const finalSpec = compiler.getResult();
+      setGeneratedSpec(finalSpec);
+      setGenerating(false);
+
+      await fetchHtml(finalSpec);
+    } catch (e) {
+      if (controller.signal.aborted) return;
+      setError(e instanceof Error ? e.message : "Something went wrong");
+      setGenerating(false);
+    }
+  }, [prompt, selection, currentExample, fetchHtml]);
+
+  const handleStop = useCallback(() => {
+    abortRef.current?.abort();
+    setGenerating(false);
+
+    if (isRenderableSpec(generatedSpec)) {
+      fetchHtml(generatedSpec).catch(() => {});
+    }
+  }, [generatedSpec, fetchHtml]);
+
+  const select = (next: Selection) => {
+    abortRef.current?.abort();
+    setSelection(next);
+    setGeneratedSpec(null);
+    setHtmlContent(null);
+    setError(null);
+    setPrompt("");
+    setGenerating(false);
+    setExamplesSheetOpen(false);
+  };
+
+  const handleDownload = async () => {
+    if (!activeSpec) return;
+    const spec = generatedSpec ?? currentExample?.spec;
+    if (!spec) return;
+
+    const res = await fetch("/api/email", {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ spec }),
+    });
+    if (!res.ok) return;
+    const html = await res.text();
+    const blob = new Blob([html], { type: "text/html" });
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement("a");
+    a.href = url;
+    a.download = "email.html";
+    a.click();
+    URL.revokeObjectURL(url);
+  };
+
+  const handleKeyDown = useCallback(
+    (e: React.KeyboardEvent) => {
+      if (e.key === "Enter" && !e.shiftKey) {
+        e.preventDefault();
+        handleGenerate();
+      }
+    },
+    [handleGenerate],
+  );
+
+  const jsonCode = activeSpec
+    ? JSON.stringify(activeSpec, null, 2)
+    : "// select an example or generate an email";
+
+  // ---------------------------------------------------------------------------
+  // Pane: Chat / Examples
+  // ---------------------------------------------------------------------------
+  const chatPane = (
+    <div className="h-full flex flex-col">
+      <div className="border-b border-border px-3 h-9 flex items-center gap-2">
+        <FileText className="h-3.5 w-3.5 text-muted-foreground" />
+        <span className="text-xs font-mono text-muted-foreground">
+          json-render / react-email
+        </span>
+      </div>
+
+      <ScrollArea className="flex-1">
+        <div className="p-2 space-y-1">
+          <p className="px-2 pt-2 pb-1 text-[11px] font-mono text-muted-foreground">
+            start
+          </p>
+          <button
+            onClick={() => select({ mode: "scratch" })}
+            className={cn(
+              "w-full text-left px-3 py-2 rounded text-sm transition-colors",
+              selection.mode === "scratch"
+                ? "bg-muted text-foreground"
+                : "text-muted-foreground hover:bg-muted/50 hover:text-foreground",
+            )}
+          >
+            <span className="font-medium">From scratch</span>
+          </button>
+
+          <p className="px-2 pt-3 pb-1 text-[11px] font-mono text-muted-foreground">
+            examples
+          </p>
+          {examples.map((ex) => (
+            <button
+              key={ex.name}
+              onClick={() => select({ mode: "example", exampleName: ex.name })}
+              className={cn(
+                "w-full text-left px-3 py-2 rounded text-sm transition-colors",
+                selection.mode === "example" &&
+                  selection.exampleName === ex.name
+                  ? "bg-muted text-foreground"
+                  : "text-muted-foreground hover:bg-muted/50 hover:text-foreground",
+              )}
+            >
+              <span className="font-medium">{ex.label}</span>
+              <p className="text-xs text-muted-foreground/70 mt-0.5 leading-snug">
+                {ex.description}
+              </p>
+            </button>
+          ))}
+        </div>
+      </ScrollArea>
+
+      <div
+        className="border-t border-border p-3 cursor-text"
+        onMouseDown={(e) => {
+          const target = e.target as HTMLElement;
+          if (!target.closest("button") && target.tagName !== "TEXTAREA") {
+            e.preventDefault();
+            inputRef.current?.focus();
+          }
+        }}
+      >
+        {error && (
+          <div className="mb-2 rounded bg-destructive/10 px-3 py-1.5 text-xs text-destructive">
+            {error}
+          </div>
+        )}
+        <textarea
+          ref={inputRef}
+          value={prompt}
+          onChange={(e) => setPrompt(e.target.value)}
+          onKeyDown={handleKeyDown}
+          placeholder={
+            selection.mode === "scratch"
+              ? "Describe the email you want..."
+              : `Modify the ${currentExample?.label ?? "example"}...`
+          }
+          className="w-full bg-background text-sm resize-none outline-none placeholder:text-muted-foreground/50"
+          rows={2}
+          autoFocus
+        />
+        <div className="flex justify-between items-center mt-2">
+          <span className="text-[11px] text-muted-foreground">
+            {selection.mode === "example" && currentExample
+              ? currentExample.label
+              : "scratch"}
+          </span>
+          {generating ? (
+            <button
+              onClick={handleStop}
+              className="w-7 h-7 rounded-full bg-primary text-primary-foreground flex items-center justify-center hover:bg-primary/90 transition-colors"
+              aria-label="Stop"
+            >
+              <Square className="h-3 w-3" fill="currentColor" />
+            </button>
+          ) : (
+            <button
+              onClick={handleGenerate}
+              disabled={!prompt.trim()}
+              className="w-7 h-7 rounded-full bg-primary text-primary-foreground flex items-center justify-center hover:bg-primary/90 transition-colors disabled:opacity-30"
+              aria-label="Generate"
+            >
+              <ArrowRight className="h-3.5 w-3.5" />
+            </button>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+
+  // ---------------------------------------------------------------------------
+  // Pane: JSON Spec
+  // ---------------------------------------------------------------------------
+  const codePane = (
+    <div className="h-full flex flex-col">
+      <div className="border-b border-border px-3 h-9 flex items-center gap-3">
+        <span className="text-xs font-mono text-foreground">json</span>
+        {generating && (
+          <Loader2 className="h-3 w-3 text-muted-foreground animate-spin" />
+        )}
+        <div className="flex-1" />
+        {activeSpec && <CopyButton text={jsonCode} />}
+      </div>
+      <div ref={codeScrollRef} className="flex-1 overflow-auto">
+        <pre className="p-3 text-xs leading-relaxed font-mono text-muted-foreground whitespace-pre">
+          {jsonCode}
+        </pre>
+      </div>
+    </div>
+  );
+
+  // ---------------------------------------------------------------------------
+  // Pane: Email Preview
+  // ---------------------------------------------------------------------------
+  const previewPane = (
+    <div className="h-full flex flex-col">
+      <div className="border-b border-border px-3 h-9 flex items-center gap-3">
+        <span className="text-xs font-mono text-foreground">preview</span>
+        {(generating || refreshing) && (
+          <Loader2 className="h-3 w-3 text-muted-foreground animate-spin" />
+        )}
+        <div className="flex-1" />
+        {activeSpec && (
+          <button
+            onClick={handleDownload}
+            className="text-xs text-muted-foreground hover:text-foreground transition-colors font-mono flex items-center gap-1"
+          >
+            <Download className="h-3 w-3" />
+            download
+          </button>
+        )}
+      </div>
+      <div className="flex-1 relative bg-neutral-600">
+        {htmlContent ? (
+          <div className="h-full flex justify-center p-5 overflow-auto">
+            <iframe
+              srcDoc={htmlContent}
+              className="w-[620px] h-full border-none bg-white shadow-sm"
+              title="Email preview"
+            />
+          </div>
+        ) : (
+          <div className="h-full flex flex-col items-center justify-center gap-2 text-neutral-400">
+            <FileText className="h-10 w-10" />
+            <p className="text-sm">
+              {selection.mode === "scratch"
+                ? "Enter a prompt to generate an email"
+                : "Select an example to preview"}
+            </p>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+
+  // ---------------------------------------------------------------------------
+  // Render
+  // ---------------------------------------------------------------------------
+  return (
+    <div className="h-dvh flex flex-col">
+      {/* Desktop: 3-pane resizable layout */}
+      <div className="hidden lg:flex flex-1 min-h-0">
+        <ResizablePanelGroup className="flex-1">
+          <ResizablePanel defaultSize={25} minSize={15}>
+            {chatPane}
+          </ResizablePanel>
+          <ResizableHandle />
+          <ResizablePanel defaultSize={35} minSize={20}>
+            {codePane}
+          </ResizablePanel>
+          <ResizableHandle />
+          <ResizablePanel defaultSize={40} minSize={20}>
+            {previewPane}
+          </ResizablePanel>
+        </ResizablePanelGroup>
+      </div>
+
+      {/* Mobile: toolbar + content + prompt */}
+      <div className="flex lg:hidden flex-col flex-1 min-h-0">
+        <div className="border-b border-border px-3 h-9 flex items-center gap-3 shrink-0">
+          <button
+            onClick={() => setExamplesSheetOpen(true)}
+            className="text-xs font-mono font-medium px-1.5 py-0.5 rounded bg-muted text-foreground shrink-0"
+          >
+            {selection.mode === "example" && currentExample
+              ? currentExample.label
+              : "scratch"}
+          </button>
+          {(["json", "preview"] as const).map((tab) => (
+            <button
+              key={tab}
+              onClick={() => setMobileView(tab)}
+              className={cn(
+                "text-xs font-mono transition-colors shrink-0",
+                mobileView === tab
+                  ? "text-foreground"
+                  : "text-muted-foreground hover:text-foreground",
+              )}
+            >
+              {tab}
+            </button>
+          ))}
+          {(generating || refreshing) && (
+            <Loader2 className="h-3 w-3 text-muted-foreground animate-spin shrink-0" />
+          )}
+          <div className="flex-1" />
+          {activeSpec && (
+            <button
+              onClick={handleDownload}
+              className="text-xs text-muted-foreground hover:text-foreground transition-colors font-mono flex items-center gap-1"
+            >
+              <Download className="h-3 w-3" />
+            </button>
+          )}
+        </div>
+
+        <div ref={mobileCodeScrollRef} className="flex-1 min-h-0 overflow-auto">
+          {mobileView === "json" ? (
+            <pre className="p-3 text-xs leading-relaxed font-mono text-muted-foreground whitespace-pre">
+              {jsonCode}
+            </pre>
+          ) : (
+            <div className="h-full relative bg-neutral-600">
+              {htmlContent ? (
+                <div className="h-full flex justify-center p-5 overflow-auto">
+                  <iframe
+                    srcDoc={htmlContent}
+                    className="w-[620px] h-full border-none bg-white shadow-sm"
+                    title="Email preview"
+                  />
+                </div>
+              ) : (
+                <div className="h-full flex flex-col items-center justify-center gap-2 text-neutral-400">
+                  <FileText className="h-10 w-10" />
+                  <p className="text-sm">Enter a prompt to generate an email</p>
+                </div>
+              )}
+            </div>
+          )}
+        </div>
+
+        <div
+          className="border-t border-border p-3 shrink-0 cursor-text"
+          onMouseDown={(e) => {
+            const target = e.target as HTMLElement;
+            if (!target.closest("button") && target.tagName !== "TEXTAREA") {
+              e.preventDefault();
+              mobileInputRef.current?.focus();
+            }
+          }}
+        >
+          <textarea
+            ref={mobileInputRef}
+            value={prompt}
+            onChange={(e) => setPrompt(e.target.value)}
+            onKeyDown={handleKeyDown}
+            placeholder={
+              selection.mode === "scratch"
+                ? "Describe the email you want..."
+                : `Modify the ${currentExample?.label ?? "example"}...`
+            }
+            className="w-full bg-background text-base resize-none outline-none placeholder:text-muted-foreground/50"
+            rows={2}
+          />
+          <div className="flex justify-between items-center mt-2">
+            <span className="text-[11px] text-muted-foreground">
+              {selection.mode === "example" && currentExample
+                ? currentExample.label
+                : "scratch"}
+            </span>
+            {generating ? (
+              <button
+                onClick={handleStop}
+                className="w-7 h-7 rounded-full bg-primary text-primary-foreground flex items-center justify-center hover:bg-primary/90 transition-colors"
+                aria-label="Stop"
+              >
+                <Square className="h-3 w-3" fill="currentColor" />
+              </button>
+            ) : (
+              <button
+                onClick={handleGenerate}
+                disabled={!prompt.trim()}
+                className="w-7 h-7 rounded-full bg-primary text-primary-foreground flex items-center justify-center hover:bg-primary/90 transition-colors disabled:opacity-30"
+                aria-label="Generate"
+              >
+                <ArrowRight className="h-3.5 w-3.5" />
+              </button>
+            )}
+          </div>
+        </div>
+
+        <Sheet open={examplesSheetOpen} onOpenChange={setExamplesSheetOpen}>
+          <SheetContent side="left" className="w-80 p-0">
+            <SheetTitle className="sr-only">Examples</SheetTitle>
+            <ScrollArea className="h-full">
+              <div className="p-2 space-y-1">
+                <p className="px-2 pt-2 pb-1 text-[11px] font-mono text-muted-foreground">
+                  start
+                </p>
+                <button
+                  onClick={() => select({ mode: "scratch" })}
+                  className={cn(
+                    "w-full text-left px-3 py-2 rounded text-sm transition-colors",
+                    selection.mode === "scratch"
+                      ? "bg-muted text-foreground"
+                      : "text-muted-foreground hover:bg-muted/50 hover:text-foreground",
+                  )}
+                >
+                  From scratch
+                </button>
+                <p className="px-2 pt-3 pb-1 text-[11px] font-mono text-muted-foreground">
+                  examples
+                </p>
+                {examples.map((ex) => (
+                  <button
+                    key={ex.name}
+                    onClick={() =>
+                      select({ mode: "example", exampleName: ex.name })
+                    }
+                    className={cn(
+                      "w-full text-left px-3 py-2 rounded text-sm transition-colors",
+                      selection.mode === "example" &&
+                        selection.exampleName === ex.name
+                        ? "bg-muted text-foreground"
+                        : "text-muted-foreground hover:bg-muted/50 hover:text-foreground",
+                    )}
+                  >
+                    <span className="font-medium">{ex.label}</span>
+                    <p className="text-xs text-muted-foreground/70 mt-0.5 leading-snug">
+                      {ex.description}
+                    </p>
+                  </button>
+                ))}
+              </div>
+            </ScrollArea>
+          </SheetContent>
+        </Sheet>
+      </div>
+    </div>
+  );
+}

examples/react-email/components.json

@@ -0,0 +1,23 @@
+{
+  "$schema": "https://ui.shadcn.com/schema.json",
+  "style": "new-york",
+  "rsc": true,
+  "tsx": true,
+  "tailwind": {
+    "config": "",
+    "css": "app/globals.css",
+    "baseColor": "neutral",
+    "cssVariables": true,
+    "prefix": ""
+  },
+  "iconLibrary": "lucide",
+  "rtl": false,
+  "aliases": {
+    "components": "@/components",
+    "utils": "@/lib/utils",
+    "ui": "@/components/ui",
+    "lib": "@/lib",
+    "hooks": "@/hooks"
+  },
+  "registries": {}
+}

examples/react-email/components/ui/button.tsx

@@ -0,0 +1,64 @@
+import * as React from "react";
+import { cva, type VariantProps } from "class-variance-authority";
+import { Slot } from "radix-ui";
+
+import { cn } from "@/lib/utils";
+
+const buttonVariants = cva(
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-all disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 shrink-0 [&_svg]:shrink-0 outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive",
+  {
+    variants: {
+      variant: {
+        default: "bg-primary text-primary-foreground hover:bg-primary/90",
+        destructive:
+          "bg-destructive text-white hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/60",
+        outline:
+          "border bg-background shadow-xs hover:bg-accent hover:text-accent-foreground dark:bg-input/30 dark:border-input dark:hover:bg-input/50",
+        secondary:
+          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
+        ghost:
+          "hover:bg-accent hover:text-accent-foreground dark:hover:bg-accent/50",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-9 px-4 py-2 has-[>svg]:px-3",
+        xs: "h-6 gap-1 rounded-md px-2 text-xs has-[>svg]:px-1.5 [&_svg:not([class*='size-'])]:size-3",
+        sm: "h-8 rounded-md gap-1.5 px-3 has-[>svg]:px-2.5",
+        lg: "h-10 rounded-md px-6 has-[>svg]:px-4",
+        icon: "size-9",
+        "icon-xs": "size-6 rounded-md [&_svg:not([class*='size-'])]:size-3",
+        "icon-sm": "size-8",
+        "icon-lg": "size-10",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  },
+);
+
+function Button({
+  className,
+  variant = "default",
+  size = "default",
+  asChild = false,
+  ...props
+}: React.ComponentProps<"button"> &
+  VariantProps<typeof buttonVariants> & {
+    asChild?: boolean;
+  }) {
+  const Comp = asChild ? Slot.Root : "button";
+
+  return (
+    <Comp
+      data-slot="button"
+      data-variant={variant}
+      data-size={size}
+      className={cn(buttonVariants({ variant, size, className }))}
+      {...props}
+    />
+  );
+}
+
+export { Button, buttonVariants };

examples/react-email/components/ui/resizable.tsx

@@ -0,0 +1,53 @@
+"use client";
+
+import { GripVerticalIcon } from "lucide-react";
+import * as ResizablePrimitive from "react-resizable-panels";
+
+import { cn } from "@/lib/utils";
+
+function ResizablePanelGroup({
+  className,
+  ...props
+}: ResizablePrimitive.GroupProps) {
+  return (
+    <ResizablePrimitive.Group
+      data-slot="resizable-panel-group"
+      className={cn(
+        "flex h-full w-full aria-[orientation=vertical]:flex-col",
+        className,
+      )}
+      {...props}
+    />
+  );
+}
+
+function ResizablePanel({ ...props }: ResizablePrimitive.PanelProps) {
+  return <ResizablePrimitive.Panel data-slot="resizable-panel" {...props} />;
+}
+
+function ResizableHandle({
+  withHandle,
+  className,
+  ...props
+}: ResizablePrimitive.SeparatorProps & {
+  withHandle?: boolean;
+}) {
+  return (
+    <ResizablePrimitive.Separator
+      data-slot="resizable-handle"
+      className={cn(
+        "bg-border focus-visible:ring-ring relative flex w-px items-center justify-center after:absolute after:inset-y-0 after:left-1/2 after:w-1 after:-translate-x-1/2 focus-visible:ring-1 focus-visible:ring-offset-1 focus-visible:outline-hidden aria-[orientation=horizontal]:h-px aria-[orientation=horizontal]:w-full aria-[orientation=horizontal]:after:left-0 aria-[orientation=horizontal]:after:h-1 aria-[orientation=horizontal]:after:w-full aria-[orientation=horizontal]:after:translate-x-0 aria-[orientation=horizontal]:after:-translate-y-1/2 [&[aria-orientation=horizontal]>div]:rotate-90",
+        className,
+      )}
+      {...props}
+    >
+      {withHandle && (
+        <div className="bg-border z-10 flex h-4 w-3 items-center justify-center rounded-xs border">
+          <GripVerticalIcon className="size-2.5" />
+        </div>
+      )}
+    </ResizablePrimitive.Separator>
+  );
+}
+
+export { ResizableHandle, ResizablePanel, ResizablePanelGroup };

examples/react-email/components/ui/scroll-area.tsx

@@ -0,0 +1,58 @@
+"use client";
+
+import * as React from "react";
+import { ScrollArea as ScrollAreaPrimitive } from "radix-ui";
+
+import { cn } from "@/lib/utils";
+
+function ScrollArea({
+  className,
+  children,
+  ...props
+}: React.ComponentProps<typeof ScrollAreaPrimitive.Root>) {
+  return (
+    <ScrollAreaPrimitive.Root
+      data-slot="scroll-area"
+      className={cn("relative", className)}
+      {...props}
+    >
+      <ScrollAreaPrimitive.Viewport
+        data-slot="scroll-area-viewport"
+        className="focus-visible:ring-ring/50 size-full rounded-[inherit] transition-[color,box-shadow] outline-none focus-visible:ring-[3px] focus-visible:outline-1"
+      >
+        {children}
+      </ScrollAreaPrimitive.Viewport>
+      <ScrollBar />
+      <ScrollAreaPrimitive.Corner />
+    </ScrollAreaPrimitive.Root>
+  );
+}
+
+function ScrollBar({
+  className,
+  orientation = "vertical",
+  ...props
+}: React.ComponentProps<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>) {
+  return (
+    <ScrollAreaPrimitive.ScrollAreaScrollbar
+      data-slot="scroll-area-scrollbar"
+      orientation={orientation}
+      className={cn(
+        "flex touch-none p-px transition-colors select-none",
+        orientation === "vertical" &&
+          "h-full w-2.5 border-l border-l-transparent",
+        orientation === "horizontal" &&
+          "h-2.5 flex-col border-t border-t-transparent",
+        className,
+      )}
+      {...props}
+    >
+      <ScrollAreaPrimitive.ScrollAreaThumb
+        data-slot="scroll-area-thumb"
+        className="bg-border relative flex-1 rounded-full"
+      />
+    </ScrollAreaPrimitive.ScrollAreaScrollbar>
+  );
+}
+
+export { ScrollArea, ScrollBar };

examples/react-email/components/ui/separator.tsx

@@ -0,0 +1,28 @@
+"use client";
+
+import * as React from "react";
+import { Separator as SeparatorPrimitive } from "radix-ui";
+
+import { cn } from "@/lib/utils";
+
+function Separator({
+  className,
+  orientation = "horizontal",
+  decorative = true,
+  ...props
+}: React.ComponentProps<typeof SeparatorPrimitive.Root>) {
+  return (
+    <SeparatorPrimitive.Root
+      data-slot="separator"
+      decorative={decorative}
+      orientation={orientation}
+      className={cn(
+        "bg-border shrink-0 data-[orientation=horizontal]:h-px data-[orientation=horizontal]:w-full data-[orientation=vertical]:h-full data-[orientation=vertical]:w-px",
+        className,
+      )}
+      {...props}
+    />
+  );
+}
+
+export { Separator };

examples/react-email/components/ui/sheet.tsx

@@ -0,0 +1,143 @@
+"use client";
+
+import * as React from "react";
+import { XIcon } from "lucide-react";
+import { Dialog as SheetPrimitive } from "radix-ui";
+
+import { cn } from "@/lib/utils";
+
+function Sheet({ ...props }: React.ComponentProps<typeof SheetPrimitive.Root>) {
+  return <SheetPrimitive.Root data-slot="sheet" {...props} />;
+}
+
+function SheetTrigger({
+  ...props
+}: React.ComponentProps<typeof SheetPrimitive.Trigger>) {
+  return <SheetPrimitive.Trigger data-slot="sheet-trigger" {...props} />;
+}
+
+function SheetClose({
+  ...props
+}: React.ComponentProps<typeof SheetPrimitive.Close>) {
+  return <SheetPrimitive.Close data-slot="sheet-close" {...props} />;
+}
+
+function SheetPortal({
+  ...props
+}: React.ComponentProps<typeof SheetPrimitive.Portal>) {
+  return <SheetPrimitive.Portal data-slot="sheet-portal" {...props} />;
+}
+
+function SheetOverlay({
+  className,
+  ...props
+}: React.ComponentProps<typeof SheetPrimitive.Overlay>) {
+  return (
+    <SheetPrimitive.Overlay
+      data-slot="sheet-overlay"
+      className={cn(
+        "data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 fixed inset-0 z-50 bg-black/50",
+        className,
+      )}
+      {...props}
+    />
+  );
+}
+
+function SheetContent({
+  className,
+  children,
+  side = "right",
+  showCloseButton = true,
+  ...props
+}: React.ComponentProps<typeof SheetPrimitive.Content> & {
+  side?: "top" | "right" | "bottom" | "left";
+  showCloseButton?: boolean;
+}) {
+  return (
+    <SheetPortal>
+      <SheetOverlay />
+      <SheetPrimitive.Content
+        data-slot="sheet-content"
+        className={cn(
+          "bg-background data-[state=open]:animate-in data-[state=closed]:animate-out fixed z-50 flex flex-col gap-4 shadow-lg transition ease-in-out data-[state=closed]:duration-300 data-[state=open]:duration-500",
+          side === "right" &&
+            "data-[state=closed]:slide-out-to-right data-[state=open]:slide-in-from-right inset-y-0 right-0 h-full w-3/4 border-l sm:max-w-sm",
+          side === "left" &&
+            "data-[state=closed]:slide-out-to-left data-[state=open]:slide-in-from-left inset-y-0 left-0 h-full w-3/4 border-r sm:max-w-sm",
+          side === "top" &&
+            "data-[state=closed]:slide-out-to-top data-[state=open]:slide-in-from-top inset-x-0 top-0 h-auto border-b",
+          side === "bottom" &&
+            "data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom inset-x-0 bottom-0 h-auto border-t",
+          className,
+        )}
+        {...props}
+      >
+        {children}
+        {showCloseButton && (
+          <SheetPrimitive.Close className="ring-offset-background focus:ring-ring data-[state=open]:bg-secondary absolute top-4 right-4 rounded-xs opacity-70 transition-opacity hover:opacity-100 focus:ring-2 focus:ring-offset-2 focus:outline-hidden disabled:pointer-events-none">
+            <XIcon className="size-4" />
+            <span className="sr-only">Close</span>
+          </SheetPrimitive.Close>
+        )}
+      </SheetPrimitive.Content>
+    </SheetPortal>
+  );
+}
+
+function SheetHeader({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="sheet-header"
+      className={cn("flex flex-col gap-1.5 p-4", className)}
+      {...props}
+    />
+  );
+}
+
+function SheetFooter({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="sheet-footer"
+      className={cn("mt-auto flex flex-col gap-2 p-4", className)}
+      {...props}
+    />
+  );
+}
+
+function SheetTitle({
+  className,
+  ...props
+}: React.ComponentProps<typeof SheetPrimitive.Title>) {
+  return (
+    <SheetPrimitive.Title
+      data-slot="sheet-title"
+      className={cn("text-foreground font-semibold", className)}
+      {...props}
+    />
+  );
+}
+
+function SheetDescription({
+  className,
+  ...props
+}: React.ComponentProps<typeof SheetPrimitive.Description>) {
+  return (
+    <SheetPrimitive.Description
+      data-slot="sheet-description"
+      className={cn("text-muted-foreground text-sm", className)}
+      {...props}
+    />
+  );
+}
+
+export {
+  Sheet,
+  SheetTrigger,
+  SheetClose,
+  SheetContent,
+  SheetHeader,
+  SheetFooter,
+  SheetTitle,
+  SheetDescription,
+};

examples/react-email/components/ui/tabs.tsx

@@ -0,0 +1,91 @@
+"use client";
+
+import * as React from "react";
+import { cva, type VariantProps } from "class-variance-authority";
+import { Tabs as TabsPrimitive } from "radix-ui";
+
+import { cn } from "@/lib/utils";
+
+function Tabs({
+  className,
+  orientation = "horizontal",
+  ...props
+}: React.ComponentProps<typeof TabsPrimitive.Root>) {
+  return (
+    <TabsPrimitive.Root
+      data-slot="tabs"
+      data-orientation={orientation}
+      orientation={orientation}
+      className={cn(
+        "group/tabs flex gap-2 data-[orientation=horizontal]:flex-col",
+        className,
+      )}
+      {...props}
+    />
+  );
+}
+
+const tabsListVariants = cva(
+  "rounded-lg p-[3px] group-data-[orientation=horizontal]/tabs:h-9 data-[variant=line]:rounded-none group/tabs-list text-muted-foreground inline-flex w-fit items-center justify-center group-data-[orientation=vertical]/tabs:h-fit group-data-[orientation=vertical]/tabs:flex-col",
+  {
+    variants: {
+      variant: {
+        default: "bg-muted",
+        line: "gap-1 bg-transparent",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  },
+);
+
+function TabsList({
+  className,
+  variant = "default",
+  ...props
+}: React.ComponentProps<typeof TabsPrimitive.List> &
+  VariantProps<typeof tabsListVariants>) {
+  return (
+    <TabsPrimitive.List
+      data-slot="tabs-list"
+      data-variant={variant}
+      className={cn(tabsListVariants({ variant }), className)}
+      {...props}
+    />
+  );
+}
+
+function TabsTrigger({
+  className,
+  ...props
+}: React.ComponentProps<typeof TabsPrimitive.Trigger>) {
+  return (
+    <TabsPrimitive.Trigger
+      data-slot="tabs-trigger"
+      className={cn(
+        "focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:outline-ring text-foreground/60 hover:text-foreground dark:text-muted-foreground dark:hover:text-foreground relative inline-flex h-[calc(100%-1px)] flex-1 items-center justify-center gap-1.5 rounded-md border border-transparent px-2 py-1 text-sm font-medium whitespace-nowrap transition-all group-data-[orientation=vertical]/tabs:w-full group-data-[orientation=vertical]/tabs:justify-start focus-visible:ring-[3px] focus-visible:outline-1 disabled:pointer-events-none disabled:opacity-50 group-data-[variant=default]/tabs-list:data-[state=active]:shadow-sm group-data-[variant=line]/tabs-list:data-[state=active]:shadow-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
+        "group-data-[variant=line]/tabs-list:bg-transparent group-data-[variant=line]/tabs-list:data-[state=active]:bg-transparent dark:group-data-[variant=line]/tabs-list:data-[state=active]:border-transparent dark:group-data-[variant=line]/tabs-list:data-[state=active]:bg-transparent",
+        "data-[state=active]:bg-background dark:data-[state=active]:text-foreground dark:data-[state=active]:border-input dark:data-[state=active]:bg-input/30 data-[state=active]:text-foreground",
+        "after:bg-foreground after:absolute after:opacity-0 after:transition-opacity group-data-[orientation=horizontal]/tabs:after:inset-x-0 group-data-[orientation=horizontal]/tabs:after:bottom-[-5px] group-data-[orientation=horizontal]/tabs:after:h-0.5 group-data-[orientation=vertical]/tabs:after:inset-y-0 group-data-[orientation=vertical]/tabs:after:-right-1 group-data-[orientation=vertical]/tabs:after:w-0.5 group-data-[variant=line]/tabs-list:data-[state=active]:after:opacity-100",
+        className,
+      )}
+      {...props}
+    />
+  );
+}
+
+function TabsContent({
+  className,
+  ...props
+}: React.ComponentProps<typeof TabsPrimitive.Content>) {
+  return (
+    <TabsPrimitive.Content
+      data-slot="tabs-content"
+      className={cn("flex-1 outline-none", className)}
+      {...props}
+    />
+  );
+}
+
+export { Tabs, TabsList, TabsTrigger, TabsContent, tabsListVariants };

examples/react-email/components/ui/textarea.tsx

@@ -0,0 +1,18 @@
+import * as React from "react";
+
+import { cn } from "@/lib/utils";
+
+function Textarea({ className, ...props }: React.ComponentProps<"textarea">) {
+  return (
+    <textarea
+      data-slot="textarea"
+      className={cn(
+        "border-input placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive dark:bg-input/30 flex field-sizing-content min-h-16 w-full rounded-md border bg-transparent px-3 py-2 text-base shadow-xs transition-[color,box-shadow] outline-none focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+        className,
+      )}
+      {...props}
+    />
+  );
+}
+
+export { Textarea };

examples/react-email/lib/catalog.ts

@@ -0,0 +1,8 @@
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/react-email/server";
+import { standardComponentDefinitions } from "@json-render/react-email/catalog";
+
+export const emailCatalog = defineCatalog(schema, {
+  components: standardComponentDefinitions,
+  actions: {},
+});

examples/react-email/lib/utils.ts

@@ -0,0 +1,6 @@
+import { clsx, type ClassValue } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs));
+}

examples/react-email/next-env.d.ts

@@ -0,0 +1,6 @@
+/// <reference types="next" />
+/// <reference types="next/image-types/global" />
+import "./.next/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/react-email/next.config.ts

@@ -0,0 +1,11 @@
+import type { NextConfig } from "next";
+
+const nextConfig: NextConfig = {
+  serverExternalPackages: [
+    "@react-email/components",
+    "@react-email/render",
+    "@json-render/react-email",
+  ],
+};
+
+export default nextConfig;

examples/react-email/package.json

@@ -0,0 +1,39 @@
+{
+  "name": "example-react-email",
+  "version": "0.1.1",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "dev": "portless react-email-demo.json-render next dev --turbopack",
+    "build": "next build",
+    "start": "next start",
+    "check-types": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@ai-sdk/gateway": "^3.0.52",
+    "@json-render/core": "workspace:*",
+    "@json-render/react-email": "workspace:*",
+    "@tailwindcss/postcss": "^4.1.18",
+    "ai": "6.0.94",
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
+    "lucide-react": "^0.575.0",
+    "next": "16.1.6",
+    "radix-ui": "^1.4.3",
+    "react": "19.2.4",
+    "react-dom": "19.2.4",
+    "react-resizable-panels": "^4.4.1",
+    "tailwind-merge": "^3.5.0",
+    "tailwindcss": "^4.1.18",
+    "zod": "4.3.6"
+  },
+  "devDependencies": {
+    "@internal/typescript-config": "workspace:*",
+    "@types/node": "^22.10.0",
+    "@types/react": "19.2.3",
+    "@types/react-dom": "19.2.3",
+    "shadcn": "^3.8.5",
+    "tw-animate-css": "^1.4.0",
+    "typescript": "^5.7.2"
+  }
+}

examples/react-email/postcss.config.mjs

@@ -0,0 +1,8 @@
+/** @type {import('postcss-load-config').Config} */
+const config = {
+  plugins: {
+    "@tailwindcss/postcss": {},
+  },
+};
+
+export default config;

examples/react-email/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "extends": "../../packages/typescript-config/nextjs.json",
+  "compilerOptions": {
+    "plugins": [{ "name": "next" }],
+    "paths": {
+      "@/*": ["./*"]
+    }
+  },
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
+  "exclude": ["node_modules"]
+}

examples/react-native/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-react-native
 
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/react-native@0.12.0
+
 ## 0.1.4
 
 ### Patch Changes

examples/react-native/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-react-native",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "private": true,
   "main": "expo-router/entry",
   "scripts": {

examples/react-pdf/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-react-pdf
 
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/react-pdf@0.12.0
+
 ## 0.1.4
 
 ### Patch Changes

examples/react-pdf/package.json

@@ -1,9 +1,10 @@
 {
   "name": "example-react-pdf",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "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 react-pdf-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",

examples/remotion/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-remotion
 
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/remotion@0.12.0
+
 ## 0.1.4
 
 ### Patch Changes

examples/remotion/package.json

@@ -1,9 +1,10 @@
 {
   "name": "example-remotion",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "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 remotion-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",

examples/stripe-app/api/next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/dev/types/routes.d.ts";
+import "./.next/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/stripe-app/api/package.json

@@ -4,6 +4,7 @@
   "private": true,
   "type": "module",
   "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 stripe-api-demo.json-render next dev",
     "build": "next build",
     "start": "next start --port 3001"

examples/stripe-app/drawer-app/CHANGELOG.md

@@ -1,5 +1,13 @@
 # com.example.json-render-demo
 
+## 0.0.6
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/react@0.12.0
+
 ## 0.0.5
 
 ### Patch Changes

examples/stripe-app/drawer-app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.example.json-render-demo",
-  "version": "0.0.5",
+  "version": "0.0.6",
   "description": "Test",
   "private": true,
   "license": "~~proprietary~~",

examples/stripe-app/fullpage-app/CHANGELOG.md

@@ -1,5 +1,13 @@
 # com.example.json-render-fullpage-demo
 
+## 0.0.6
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/react@0.12.0
+
 ## 0.0.5
 
 ### Patch Changes

examples/stripe-app/fullpage-app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.example.json-render-fullpage-demo",
-  "version": "0.0.5",
+  "version": "0.0.6",
   "description": "Full-page Stripe App example (alpha)",
   "private": true,
   "license": "~~proprietary~~",

examples/svelte-chat/.gitignore

@@ -0,0 +1,23 @@
+node_modules
+
+# Output
+.output
+.vercel
+.netlify
+.wrangler
+/.svelte-kit
+/build
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Env
+.env
+.env.*
+!.env.example
+!.env.test
+
+# Vite
+vite.config.js.timestamp-*
+vite.config.ts.timestamp-*

examples/svelte-chat/.npmrc

@@ -0,0 +1 @@
+engine-strict=true

examples/svelte-chat/CHANGELOG.md

@@ -0,0 +1,9 @@
+# svelte-chat
+
+## 0.0.2
+
+### Patch Changes
+
+- Updated dependencies [63c339b]
+  - @json-render/core@0.12.0
+  - @json-render/svelte@0.12.0

examples/svelte-chat/README.md

@@ -0,0 +1,42 @@
+# sv
+
+Everything you need to build a Svelte project, powered by [`sv`](https://github.com/sveltejs/cli).
+
+## Creating a project
+
+If you're seeing this, you've probably already done this step. Congrats!
+
+```sh
+# create a new project
+npx sv create my-app
+```
+
+To recreate this project with the same configuration:
+
+```sh
+# recreate this project
+npx sv create --template minimal --types ts --no-install svelte-chat
+```
+
+## Developing
+
+Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
+
+```sh
+npm run dev
+
+# or start the server and open the app in a new browser tab
+npm run dev -- --open
+```
+
+## Building
+
+To create a production version of your app:
+
+```sh
+npm run build
+```
+
+You can preview the production build with `npm run preview`.
+
+> To deploy your app, you may need to install an [adapter](https://svelte.dev/docs/kit/adapters) for your target environment.

examples/svelte-chat/components.json

@@ -0,0 +1,16 @@
+{
+	"$schema": "https://shadcn-svelte.com/schema.json",
+	"tailwind": {
+		"css": "src/app.css",
+		"baseColor": "zinc"
+	},
+	"aliases": {
+		"components": "$lib/components",
+		"utils": "$lib/utils",
+		"ui": "$lib/components/ui",
+		"hooks": "$lib/hooks",
+		"lib": "$lib"
+	},
+	"typescript": true,
+	"registry": "https://shadcn-svelte.com/registry"
+}

examples/svelte-chat/package.json

@@ -0,0 +1,39 @@
+{
+  "name": "svelte-chat",
+  "private": true,
+  "version": "0.0.2",
+  "type": "module",
+  "scripts": {
+    "dev": "vite dev",
+    "build": "vite build",
+    "preview": "vite preview",
+    "prepare": "svelte-kit sync || echo ''",
+    "check-types": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json"
+  },
+  "devDependencies": {
+    "@internationalized/date": "^3.10.0",
+    "@lucide/svelte": "^0.561.0",
+    "@sveltejs/adapter-auto": "^7.0.0",
+    "@sveltejs/kit": "^2.50.2",
+    "@sveltejs/vite-plugin-svelte": "^6.2.4",
+    "@tailwindcss/vite": "^4.0.0",
+    "bits-ui": "^2.14.4",
+    "svelte": "^5.49.2",
+    "svelte-check": "^4.3.6",
+    "tailwind-variants": "^3.2.2",
+    "tailwindcss": "^4.0.0",
+    "typescript": "^5.9.3",
+    "vite": "^7.3.1"
+  },
+  "dependencies": {
+    "@ai-sdk/gateway": "^3.0.46",
+    "@ai-sdk/svelte": "^4.0.96",
+    "@json-render/core": "workspace:*",
+    "@json-render/svelte": "workspace:*",
+    "ai": "^6.0.86",
+    "clsx": "^2.1.1",
+    "lucide-svelte": "^0.500.0",
+    "tailwind-merge": "^3.2.0",
+    "zod": "4.3.6"
+  }
+}

examples/svelte-chat/src/app.css

@@ -0,0 +1,125 @@
+@import "tailwindcss";
+
+@custom-variant dark (&:is(.dark *));
+
+@theme inline {
+  --radius-sm: calc(var(--radius) - 4px);
+  --radius-md: calc(var(--radius) - 2px);
+  --radius-lg: var(--radius);
+  --radius-xl: calc(var(--radius) + 4px);
+  --radius-2xl: calc(var(--radius) + 8px);
+  --radius-3xl: calc(var(--radius) + 12px);
+  --radius-4xl: calc(var(--radius) + 16px);
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --color-card: var(--card);
+  --color-card-foreground: var(--card-foreground);
+  --color-popover: var(--popover);
+  --color-popover-foreground: var(--popover-foreground);
+  --color-primary: var(--primary);
+  --color-primary-foreground: var(--primary-foreground);
+  --color-secondary: var(--secondary);
+  --color-secondary-foreground: var(--secondary-foreground);
+  --color-muted: var(--muted);
+  --color-muted-foreground: var(--muted-foreground);
+  --color-accent: var(--accent);
+  --color-accent-foreground: var(--accent-foreground);
+  --color-destructive: var(--destructive);
+  --color-border: var(--border);
+  --color-input: var(--input);
+  --color-ring: var(--ring);
+  --color-chart-1: var(--chart-1);
+  --color-chart-2: var(--chart-2);
+  --color-chart-3: var(--chart-3);
+  --color-chart-4: var(--chart-4);
+  --color-chart-5: var(--chart-5);
+}
+
+:root {
+  --radius: 0.625rem;
+  --background: oklch(1 0 0);
+  --foreground: oklch(0.145 0 0);
+  --card: oklch(1 0 0);
+  --card-foreground: oklch(0.145 0 0);
+  --popover: oklch(1 0 0);
+  --popover-foreground: oklch(0.145 0 0);
+  --primary: oklch(0.205 0 0);
+  --primary-foreground: oklch(0.985 0 0);
+  --secondary: oklch(0.97 0 0);
+  --secondary-foreground: oklch(0.205 0 0);
+  --muted: oklch(0.97 0 0);
+  --muted-foreground: oklch(0.556 0 0);
+  --accent: oklch(0.97 0 0);
+  --accent-foreground: oklch(0.205 0 0);
+  --destructive: oklch(0.577 0.245 27.325);
+  --border: oklch(0.922 0 0);
+  --input: oklch(0.922 0 0);
+  --ring: oklch(0.708 0 0);
+  --chart-1: oklch(0.646 0.222 41.116);
+  --chart-2: oklch(0.6 0.118 184.704);
+  --chart-3: oklch(0.398 0.07 227.392);
+  --chart-4: oklch(0.828 0.189 84.429);
+  --chart-5: oklch(0.769 0.188 70.08);
+}
+
+.dark {
+  --background: oklch(0.145 0 0);
+  --foreground: oklch(0.985 0 0);
+  --card: oklch(0.205 0 0);
+  --card-foreground: oklch(0.985 0 0);
+  --popover: oklch(0.205 0 0);
+  --popover-foreground: oklch(0.985 0 0);
+  --primary: oklch(0.922 0 0);
+  --primary-foreground: oklch(0.205 0 0);
+  --secondary: oklch(0.269 0 0);
+  --secondary-foreground: oklch(0.985 0 0);
+  --muted: oklch(0.269 0 0);
+  --muted-foreground: oklch(0.708 0 0);
+  --accent: oklch(0.269 0 0);
+  --accent-foreground: oklch(0.985 0 0);
+  --destructive: oklch(0.704 0.191 22.216);
+  --border: oklch(1 0 0 / 10%);
+  --input: oklch(1 0 0 / 15%);
+  --ring: oklch(0.556 0 0);
+  --chart-1: oklch(0.488 0.243 264.376);
+  --chart-2: oklch(0.696 0.17 162.48);
+  --chart-3: oklch(0.769 0.188 70.08);
+  --chart-4: oklch(0.627 0.265 303.9);
+  --chart-5: oklch(0.645 0.246 16.439);
+}
+
+@layer base {
+  * {
+    @apply border-border outline-ring/50;
+  }
+  body {
+    @apply bg-background text-foreground;
+  }
+}
+
+button {
+  cursor: pointer;
+}
+
+@keyframes shimmer {
+  0% {
+    background-position: -200% 0;
+  }
+  100% {
+    background-position: 200% 0;
+  }
+}
+
+.animate-shimmer {
+  background: linear-gradient(
+    90deg,
+    currentColor 25%,
+    hsl(0 0% 64%) 50%,
+    currentColor 75%
+  );
+  background-size: 200% 100%;
+  -webkit-background-clip: text;
+  background-clip: text;
+  -webkit-text-fill-color: transparent;
+  animation: shimmer 2s ease-in-out infinite;
+}

examples/svelte-chat/src/app.d.ts

@@ -0,0 +1,13 @@
+// See https://svelte.dev/docs/kit/types#app.d.ts
+// for information about these interfaces
+declare global {
+  namespace App {
+    // interface Error {}
+    // interface Locals {}
+    // interface PageData {}
+    // interface PageState {}
+    // interface Platform {}
+  }
+}
+
+export {};

examples/svelte-chat/src/app.html

@@ -0,0 +1,11 @@
+<!doctype html>
+<html lang="en">
+	<head>
+		<meta charset="utf-8" />
+		<meta name="viewport" content="width=device-width, initial-scale=1" />
+		%sveltekit.head%
+	</head>
+	<body data-sveltekit-preload-data="hover">
+		<div style="display: contents">%sveltekit.body%</div>
+	</body>
+</html>

examples/svelte-chat/src/lib/agent.ts

@@ -0,0 +1,92 @@
+import { ToolLoopAgent, stepCountIs } from "ai";
+import { createGateway } from "@ai-sdk/gateway";
+import { explorerCatalog } from "./render/catalog";
+import { getWeather } from "./tools/weather";
+import { getGitHubRepo, getGitHubPullRequests } from "./tools/github";
+import { getCryptoPrice, getCryptoPriceHistory } from "./tools/crypto";
+import { getHackerNewsTop } from "./tools/hackernews";
+import { webSearch } from "./tools/search";
+import { env } from "$env/dynamic/private";
+
+const DEFAULT_MODEL = "anthropic/claude-haiku-4.5";
+
+const AGENT_INSTRUCTIONS = `You are a knowledgeable assistant that helps users explore data and learn about any topic. You look up real-time information, build visual dashboards, and create rich educational content.
+
+WORKFLOW:
+1. Call the appropriate tools to gather relevant data. Use webSearch for general topics not covered by specialized tools.
+2. Respond with a brief, conversational summary of what you found.
+3. Then output the JSONL UI spec wrapped in a \`\`\`spec fence to render a rich visual experience.
+
+RULES:
+- Always call tools FIRST to get real data. Never make up data.
+- Embed the fetched data directly in /state paths so components can reference it.
+- Use Card components to group related information.
+- NEVER nest a Card inside another Card. If you need sub-sections inside a Card, use Stack, Separator, Heading, or Accordion instead.
+- Use Grid for multi-column layouts.
+- Use Metric for key numeric values (temperature, stars, price, etc.).
+- Use Table for lists of items (stories, forecasts, languages, etc.).
+- Use BarChart or LineChart for numeric trends and time-series data.
+- Use PieChart for compositional/proportional data (market share, breakdowns, distributions).
+- Use Tabs when showing multiple categories of data side by side.
+- Use Badge for status indicators.
+- Use Callout for key facts, tips, warnings, or important takeaways.
+- Use Accordion to organize detailed sections the user can expand for deeper reading.
+- Use Timeline for historical events, processes, step-by-step explanations, or milestones.
+- When teaching about a topic, combine multiple component types to create a rich, engaging experience.
+
+DATA BINDING:
+- The state model is the single source of truth. Put fetched data in /state, then reference it with { "$state": "/json/pointer" } in any prop.
+- $state works on ANY prop at ANY nesting level. The renderer resolves expressions before components receive props.
+- Scalar binding: "title": { "$state": "/quiz/title" }
+- Array binding: "items": { "$state": "/quiz/questions" } (for Accordion, Timeline, etc.)
+- For Table, BarChart, LineChart, and PieChart, use { "$state": "/path" } on the data prop to bind read-only data from state.
+- Always emit /state patches BEFORE the elements that reference them, so data is available when the UI renders.
+- Always use the { "$state": "/foo" } object syntax for data binding.
+
+INTERACTIVITY:
+- You can use visible, repeat, on.press, and $cond/$then/$else freely.
+- visible: Conditionally show/hide elements based on state. e.g. "visible": { "$state": "/q1/answer", "eq": "a" }
+- repeat: Iterate over state arrays. e.g. "repeat": { "statePath": "/items" }
+- on.press: Trigger actions on button clicks. e.g. "on": { "press": { "action": "setState", "params": { "statePath": "/submitted", "value": true } } }
+- $cond/$then/$else: Conditional prop values. e.g. { "$cond": { "$state": "/correct" }, "$then": "Correct!", "$else": "Try again" }
+
+BUILT-IN ACTIONS (use with on.press):
+- setState: Set a value at a state path. params: { statePath: "/foo", value: "bar" }
+- pushState: Append to an array. params: { statePath: "/items", value: { ... } }
+- removeState: Remove by index. params: { statePath: "/items", index: 0 }
+
+INPUT COMPONENTS:
+- RadioGroup: Renders radio buttons. Writes selected value to statePath automatically.
+- SelectInput: Dropdown select. Writes selected value to statePath automatically.
+- TextInput: Text input field. Writes entered value to statePath automatically.
+- Button: Clickable button. Use on.press to trigger actions.
+
+${explorerCatalog.prompt({
+  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.",
+    "Use Metric components for key numbers instead of plain Text.",
+    "Put chart data arrays in /state and reference them with { $state: '/path' } on the data prop.",
+    "Keep the UI clean and information-dense — no excessive padding or empty space.",
+    "For educational prompts ('teach me about', 'explain', 'what is'), use a mix of Callout, Accordion, Timeline, and charts to make the content visually rich.",
+  ],
+})}`;
+
+export const gateway = createGateway({ apiKey: env.AI_GATEWAY_API_KEY });
+
+export const agent = new ToolLoopAgent({
+  model: gateway(env.AI_GATEWAY_MODEL || DEFAULT_MODEL),
+  instructions: AGENT_INSTRUCTIONS,
+  tools: {
+    getWeather,
+    getGitHubRepo,
+    getGitHubPullRequests,
+    getCryptoPrice,
+    getCryptoPriceHistory,
+    getHackerNewsTop,
+    webSearch,
+  },
+  stopWhen: stepCountIs(5),
+  temperature: 0.7,
+});