chore: version packages (#243)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.changeset/config.json

@@ -22,7 +22,8 @@
       "@json-render/svelte",
       "@json-render/solid",
       "@json-render/react-three-fiber",
-      "@json-render/yaml"
+      "@json-render/yaml",
+      "@json-render/ink"
     ]
   ],
   "linked": [],

README.md

@@ -23,6 +23,8 @@ npm install @json-render/core @json-render/vue
 npm install @json-render/core @json-render/svelte
 # or for SolidJS
 npm install @json-render/core @json-render/solid
+# or for terminal UIs
+npm install @json-render/core @json-render/ink ink react
 # or for 3D scenes
 npm install @json-render/core @json-render/react-three-fiber @react-three/fiber @react-three/drei three
 ```
@@ -128,6 +130,7 @@ function Dashboard({ spec }) {
 | `@json-render/remotion`     | Remotion video renderer, timeline schema                               |
 | `@json-render/react-pdf`    | React PDF renderer for generating PDF documents from specs             |
 | `@json-render/react-email`  | React Email renderer for HTML/plain-text emails from specs             |
+| `@json-render/ink`          | Ink terminal renderer with built-in components for interactive TUIs.   |
 | `@json-render/image`        | Image renderer for SVG/PNG output (OG images, social cards) via Satori |
 | `@json-render/codegen`      | Utilities for generating code from json-render UI trees                |
 | `@json-render/redux`        | Redux / Redux Toolkit adapter for `StateStore`                         |
@@ -479,6 +482,47 @@ const { registry } = defineRegistry(catalog, {
 />;
 ```
 
+### Ink (Terminal)
+
+```tsx
+import { defineCatalog } from "@json-render/core";
+import {
+  schema,
+  standardComponentDefinitions,
+  standardActionDefinitions,
+  defineRegistry,
+  Renderer,
+  JSONUIProvider,
+} from "@json-render/ink";
+
+const catalog = defineCatalog(schema, {
+  components: { ...standardComponentDefinitions },
+  actions: standardActionDefinitions,
+});
+
+const { registry } = defineRegistry(catalog, { components: {} });
+
+const spec = {
+  root: "card-1",
+  elements: {
+    "card-1": {
+      type: "Card",
+      props: { title: "Status" },
+      children: ["status-1"],
+    },
+    "status-1": {
+      type: "StatusLine",
+      props: { label: "Build", status: "success" },
+      children: [],
+    },
+  },
+};
+
+<JSONUIProvider initialState={{}}>
+  <Renderer spec={spec} registry={registry} />
+</JSONUIProvider>;
+```
+
 ## Features
 
 ### Streaming (SpecStream)

apps/web/CHANGELOG.md

@@ -1,5 +1,15 @@
 # web
 
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/codegen@0.15.0
+  - @json-render/react@0.15.0
+  - @json-render/yaml@0.15.0
+
 ## 0.1.9
 
 ### Patch Changes

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

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

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

@@ -83,6 +83,13 @@ All renderers share the same workflow:
       </td>
       <td>Video compositions</td>
     </tr>
+    <tr>
+      <td>Ink</td>
+      <td>
+        <code>@json-render/ink</code>
+      </td>
+      <td>Terminal UI (via Ink)</td>
+    </tr>
   </tbody>
 </table>
 
@@ -263,6 +270,30 @@ Uses a timeline spec format with compositions, tracks, and clips. Includes stand
 
 See the [@json-render/remotion API reference](/docs/api/remotion) for details.
 
+## Ink (Terminal)
+
+Render specs as terminal UIs using [Ink](https://github.com/vadimdemedes/ink). Multiple standard components including tables, progress bars, spinners, tabs, multi-select, and interactive inputs with Tab-cycling focus.
+
+```tsx
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/ink/schema";
+import {
+  standardComponentDefinitions,
+  standardActionDefinitions,
+} from "@json-render/ink/catalog";
+import { defineRegistry, Renderer } from "@json-render/ink";
+
+const catalog = defineCatalog(schema, {
+  components: { ...standardComponentDefinitions },
+  actions: standardActionDefinitions,
+});
+
+const { registry } = defineRegistry(catalog, { components: {} });
+<Renderer spec={spec} registry={registry} />;
+```
+
+See the [@json-render/ink API reference](/docs/api/ink) for details.
+
 ## Custom Renderers
 
 You can build your own renderer for any output target. See the [Custom Schema & Renderer](/docs/custom-schema) guide for how to define a custom schema and wire it to your own rendering logic.

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

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

apps/web/lib/docs-navigation.ts

@@ -75,6 +75,7 @@ export const docsNavigation: NavSection[] = [
       { title: "@json-render/react-native", href: "/docs/api/react-native" },
       { title: "@json-render/image", href: "/docs/api/image" },
       { title: "@json-render/remotion", href: "/docs/api/remotion" },
+      { title: "@json-render/ink", href: "/docs/api/ink" },
       { title: "@json-render/vue", href: "/docs/api/vue" },
       { title: "@json-render/svelte", href: "/docs/api/svelte" },
       { title: "@json-render/solid", href: "/docs/api/solid" },

apps/web/lib/examples.ts

@@ -133,6 +133,14 @@ export const examples: Example[] = [
     githubPath: "examples/image",
     demoUrl: "https://image-demo.json-render.dev",
   },
+  {
+    slug: "ink-chat",
+    title: "Ink Chat",
+    description:
+      "Terminal chat agent that streams rich json-render UIs using Ink and the AI Gateway.",
+    tags: ["Ink", "Terminal", "AI"],
+    githubPath: "examples/ink-chat",
+  },
   {
     slug: "mcp",
     title: "MCP App",

apps/web/lib/page-titles.ts

@@ -59,6 +59,7 @@ export const PAGE_TITLES: Record<string, string> = {
   "docs/api/jotai": "@json-render/jotai API",
   "docs/api/react-three-fiber": "@json-render/react-three-fiber API",
   "docs/api/xstate": "@json-render/xstate API",
+  "docs/api/ink": "@json-render/ink API",
   "docs/api/yaml": "@json-render/yaml API",
 };
 

apps/web/package.json

@@ -1,6 +1,6 @@
 {
   "name": "web",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "type": "module",
   "private": true,
   "license": "Apache-2.0",

examples/chat/CHANGELOG.md

@@ -1,5 +1,14 @@
 # example-chat
 
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react@0.15.0
+  - @json-render/shadcn@0.15.0
+
 ## 0.1.9
 
 ### Patch Changes

examples/chat/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-chat",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "type": "module",
   "private": true,
   "scripts": {

examples/dashboard/CHANGELOG.md

@@ -1,5 +1,14 @@
 # example-dashboard
 
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/codegen@0.15.0
+  - @json-render/react@0.15.0
+
 ## 0.1.9
 
 ### Patch Changes

examples/dashboard/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-dashboard",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "type": "module",
   "private": true,
   "scripts": {

examples/game-engine/CHANGELOG.md

@@ -0,0 +1,11 @@
+# example-game-engine
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react@0.15.0
+  - @json-render/react-three-fiber@0.15.0
+  - @json-render/yaml@0.15.0

examples/game-engine/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-game-engine",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "module",
   "private": true,
   "scripts": {

examples/image/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-image
 
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/image@0.15.0
+
 ## 0.1.6
 
 ### Patch Changes

examples/image/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-image",
-  "version": "0.1.6",
+  "version": "0.1.7",
   "type": "module",
   "private": true,
   "scripts": {

examples/ink-chat/.env.example

@@ -0,0 +1,5 @@
+# Required for local development — get from https://vercel.com/ai-gateway
+AI_GATEWAY_API_KEY=
+
+# Optional — override the default model (anthropic/claude-haiku-4.5)
+# AI_GATEWAY_MODEL=anthropic/claude-sonnet-4-20250514

examples/ink-chat/CHANGELOG.md

@@ -0,0 +1,9 @@
+# example-ink-chat
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/ink@0.15.0

examples/ink-chat/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "example-ink-chat",
+  "version": "0.1.1",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "dev": "tsx --env-file=.env src/index.tsx",
+    "build": "tsc",
+    "start": "node dist/index.js",
+    "check-types": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@json-render/core": "workspace:*",
+    "@json-render/ink": "workspace:*",
+    "ai": "^6.0.33",
+    "@ai-sdk/gateway": "^3.0.52",
+    "ink": "^6.8.0",
+    "react": "19.2.4",
+    "zod": "4.3.6"
+  },
+  "devDependencies": {
+    "@types/react": "19.2.3",
+    "@types/node": "^22.10.0",
+    "tsx": "^4.19.0",
+    "typescript": "^5.7.2"
+  }
+}

examples/ink-chat/src/app.tsx

@@ -0,0 +1,644 @@
+import { useState, useCallback, useRef, useMemo, useEffect } from "react";
+import { Box, Text, useInput, useApp, useStdout } from "ink";
+import { streamText, stepCountIs } from "ai";
+import { gateway } from "@ai-sdk/gateway";
+import {
+  createMixedStreamParser,
+  createStateStore,
+  applySpecPatch,
+  type Spec,
+} from "@json-render/core";
+import { JSONUIProvider, Renderer, useFocusDisable } from "@json-render/ink";
+import { catalog } from "./catalog.js";
+import { tools } from "./tools.js";
+
+const DEFAULT_MODEL = "anthropic/claude-haiku-4.5";
+
+// Component types stepped through one-at-a-time in the wizard.
+// Tabs are excluded — they're navigation, rendered inline with the full spec.
+const WIZARD_TYPES = new Set([
+  "TextInput",
+  "Select",
+  "MultiSelect",
+  "ConfirmInput",
+]);
+
+// Interactive component types that need live keyboard input (wizard types + Tabs)
+const INTERACTIVE_TYPES = new Set([...WIZARD_TYPES, "Tabs"]);
+
+/** Check if a spec contains any interactive components */
+function hasInteractiveElements(spec: Spec): boolean {
+  return Object.values(spec.elements).some((el) =>
+    INTERACTIVE_TYPES.has(el.type),
+  );
+}
+
+/** Collect an element and all its descendants from the spec tree */
+function collectSubtree(spec: Spec, rootKey: string): Spec["elements"] {
+  const result: Spec["elements"] = {};
+  const queue = [rootKey];
+  while (queue.length > 0) {
+    const key = queue.shift()!;
+    const el = spec.elements[key];
+    if (!el) continue;
+    result[key] = el;
+    if (el.children) queue.push(...el.children);
+  }
+  return result;
+}
+
+/** Get event→action bindings that auto-advance the wizard for each component type */
+function getAdvanceEvents(
+  type: string,
+): Record<string, Array<{ action: string }>> | null {
+  switch (type) {
+    case "Select":
+      return { change: [{ action: "advance" }] };
+    case "TextInput":
+    case "MultiSelect":
+      return { submit: [{ action: "advance" }] };
+    case "ConfirmInput":
+      return {
+        confirm: [{ action: "advance" }],
+        deny: [{ action: "advance" }],
+      };
+    default:
+      return null;
+  }
+}
+
+/** Step-specific hint text */
+function getStepHint(type: string, isLast: boolean): string {
+  const action = isLast ? "submit" : "continue";
+  switch (type) {
+    case "Select":
+      return `Use arrow keys, Enter to ${action}`;
+    case "MultiSelect":
+      return `Space to toggle, Enter to ${action}`;
+    case "TextInput":
+      return `Type your answer, Enter to ${action}`;
+    case "ConfirmInput":
+      return `Press Y or N to ${action}`;
+    default:
+      return `Make your selection to ${action}`;
+  }
+}
+
+// ---------------------------------------------------------------------------
+// System prompt — handwritten design guidance + catalog documentation.
+// Follows the same pattern as examples/chat/lib/agent.ts: a rich
+// AGENT_INSTRUCTIONS string with catalog.prompt() appended at the end.
+// ---------------------------------------------------------------------------
+
+const AGENT_INSTRUCTIONS = `You are a terminal assistant that renders polished, information-dense UIs. You call tools for real-time data, then build clean terminal dashboards.
+
+WORKFLOW:
+1. Call the appropriate tools to gather real data. Use web_search for topics not covered by the specialized tools (get_weather, get_hacker_news, get_github_repo, get_crypto_price).
+2. While tools run, output a single short status line (e.g. "Looking up weather data..."). This is the ONLY text allowed outside the spec fence.
+3. After tools return, output ALL content inside a \`\`\`spec fence. Never write paragraphs of prose outside the fence.
+4. For simple text replies (greetings, clarifications), still use a \`\`\`spec with a Markdown component.
+
+DESIGN PRINCIPLES:
+- HIERARCHY: Every response needs clear visual structure. Start with an h1 Heading for the topic. Use h2 Headings for subsections. Use Card to group related content into shaded areas — Cards render as subtle background fills, not bordered boxes.
+- LEAD WITH THE STORY: Open with a brief Markdown paragraph (2-3 sentences) that tells the user the key insight or takeaway. Don't just dump data — frame it.
+- SUMMARY METRICS: After the narrative, show 2-4 Metric components for the most important numbers. Metric displays a dim label, bold value, and optional colored trend (up=green, down=red). Group them in a horizontal Box (flexDirection: row, gap: 3) so they read like a dashboard header. Use KeyValue only for simple label:value pairs that don't need emphasis.
+- DETAIL SECTIONS: Below the summary, use h2 Headings to introduce each section, followed by a single focused visualization (Table, BarChart, or set of KeyValues).
+- ONE REPRESENTATION PER DATA POINT: Never show the same value as both a number and a percentage and a bar. Pick the most meaningful format. Use BarChart with showValues:true OR showPercentage:true, not both.
+- TABLES: Always set explicit column widths so columns don't collapse. Use headerColor:"cyan". Keep column headers short (abbreviate if needed). Right-align numeric columns.
+- CHARTS: Use distinct colors per bar in BarChart. Good palette: cyan, green, yellow, magenta, blue, red. Use Sparkline for compact inline trends alongside other content.
+- COLOR STRATEGY: Use color with intention, not decoration. cyan for labels and headers. green for positive values, growth, success. red for negative values, decline, errors. yellow for warnings or neutral highlights. dimColor:true for secondary/supporting text. Avoid coloring everything — contrast comes from restraint.
+- TABLES: Use borderStyle:"single" on Tables for a clean outline. Do NOT put Tables inside Cards — Tables have their own border and don't need additional wrapping.
+- SPACING: Use gap:1 between sections. Don't over-pad. Keep the UI compact and scannable. NEVER add padding to the root element — the app already provides outer padding.
+- WIDTH: Target 80 columns. Set explicit widths on Tables (total columns should sum to ~70-75). Use wrap:"truncate-end" on Text in tight spaces.
+- CALLOUTS: Use Callout for key takeaways, important notes, tips, and warnings. Set type (info/tip/warning/important) for a colored left border accent. Keep content concise — one key point per Callout.
+- TIMELINES: Use Timeline for historical events, step-by-step processes, and milestones. Set status per item (completed/current/upcoming) for colored dots. Include dates when available.
+- NEVER use emojis anywhere — not in text, labels, titles, table cells, Heading text, or component props. Plain text only.
+
+DASHBOARD PATTERN (use for data-heavy responses):
+Root Box (column, gap:1) >
+  Heading (h1, topic title)
+  Markdown (2-3 sentence summary with key takeaway)
+  Box (row, gap:3) > [Metric, Metric, Metric] (top-line metrics, no Card)
+  Heading (h2, section title)
+  Table (borderStyle:"single")
+  Card (title:"Section Name") > BarChart (bar charts go in a titled Card — the Card title replaces h2)
+  Callout (type:"tip", key takeaway or closing note)
+Card wrapping rules: Wrap BarCharts in a Card with a title. Do NOT wrap Metrics or Tables in Cards — Metrics stand alone, Tables have their own border.
+
+COMPARISON PATTERN:
+Use BarChart when you want the user to see relative magnitudes at a glance.
+Use Table when there are 3+ columns of mixed data types.
+Never use both for the same data.
+
+TREND PATTERN:
+Use Sparkline for compact inline trend next to a KeyValue.
+Use BarChart with year/period labels for detailed time-series.
+
+INTERACTIVITY:
+- You can create interactive forms, surveys, and selection interfaces. The user navigates with arrow keys, selects with Space/Enter, and types into text fields.
+- ALWAYS include a submit action on interactive UIs. Add a Text or StatusLine telling the user how to submit. Wire submit events to a "submit" action — the app collects form state automatically.
+- ALWAYS populate the state field with sensible defaults for all bound values.
+- Use $bindState on interactive components for two-way binding. Example: { "value": { "$state": "/choice" }, "$bindState": { "value": "/choice" } }.
+- Use Tabs for multi-section surveys. Use ConfirmInput for yes/no prompts.
+- After receiving form data, acknowledge the user's choices meaningfully — don't just echo them back.
+
+${catalog.prompt({
+  mode: "inline",
+  customRules: [
+    "ALL text MUST go inside the spec using the Markdown component. The ONLY text outside the fence is a short tool-status line.",
+    "For text-only answers, still output a spec with a Markdown component.",
+    "Prefer Table for structured data and KeyValue for label-value pairs.",
+    "NEVER use emojis anywhere in your output. Plain text only.",
+  ],
+})}`;
+
+// ---------------------------------------------------------------------------
+// Types
+// ---------------------------------------------------------------------------
+
+interface Message {
+  id: number;
+  role: "user" | "assistant";
+  text: string;
+  spec: Spec | null;
+}
+
+// ---------------------------------------------------------------------------
+// ChatInput — simple terminal text input
+// ---------------------------------------------------------------------------
+
+function ChatInput({
+  onSubmit,
+  disabled,
+}: {
+  onSubmit: (text: string) => void;
+  disabled: boolean;
+}) {
+  const [value, setValue] = useState("");
+
+  useInput(
+    (input, key) => {
+      if (key.return && value.trim()) {
+        onSubmit(value.trim());
+        setValue("");
+        return;
+      }
+
+      if (key.backspace || key.delete) {
+        setValue((prev) => prev.slice(0, -1));
+        return;
+      }
+
+      if (key.ctrl || key.meta || key.escape || key.tab) return;
+      if (key.upArrow || key.downArrow || key.leftArrow || key.rightArrow)
+        return;
+
+      if (input) {
+        setValue((prev) => prev + input);
+      }
+    },
+    { isActive: !disabled },
+  );
+
+  return (
+    <Box>
+      <Text bold>{"› "}</Text>
+      {value ? (
+        <Text>{value}</Text>
+      ) : (
+        <Text dimColor>{disabled ? "Thinking..." : "Type a message..."}</Text>
+      )}
+    </Box>
+  );
+}
+
+// ---------------------------------------------------------------------------
+// Small UI helpers
+// ---------------------------------------------------------------------------
+
+const SPINNER_FRAMES = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"];
+
+function AnimatedSpinner({
+  label,
+  color = "cyan",
+}: {
+  label: string;
+  color?: string;
+}) {
+  const [frame, setFrame] = useState(0);
+  useEffect(() => {
+    const timer = setInterval(() => {
+      setFrame((prev) => (prev + 1) % SPINNER_FRAMES.length);
+    }, 80);
+    return () => clearInterval(timer);
+  }, []);
+
+  return (
+    <Box gap={1}>
+      <Text color={color}>{SPINNER_FRAMES[frame]}</Text>
+      <Text dimColor>{label}</Text>
+    </Box>
+  );
+}
+
+/** Suppress Tab-cycling inside read-only message providers so old interactive
+ *  components (e.g. Tabs) can't steal focus/arrow-key input. */
+function DisableFocus() {
+  useFocusDisable(true);
+  return null;
+}
+
+/** Render markdown text through the standard Renderer pipeline (uses the
+ *  built-in Markdown component without exporting MarkdownText). */
+function RenderedMarkdown({ text }: { text: string }) {
+  const spec: Spec = useMemo(
+    () => ({
+      root: "md",
+      elements: { md: { type: "Markdown", props: { text }, children: [] } },
+    }),
+    [text],
+  );
+
+  return (
+    <JSONUIProvider initialState={{}}>
+      <DisableFocus />
+      <Renderer spec={spec} />
+    </JSONUIProvider>
+  );
+}
+
+function MessageView({ message }: { message: Message }) {
+  if (message.role === "user") {
+    return (
+      <Box marginBottom={1}>
+        <Text bold>You: </Text>
+        <Text>{message.text}</Text>
+      </Box>
+    );
+  }
+
+  return (
+    <Box flexDirection="column" marginBottom={1}>
+      {message.spec ? (
+        <JSONUIProvider initialState={message.spec.state ?? {}}>
+          <DisableFocus />
+          <Renderer spec={message.spec} />
+        </JSONUIProvider>
+      ) : message.text ? (
+        <RenderedMarkdown text={message.text} />
+      ) : null}
+    </Box>
+  );
+}
+
+// ---------------------------------------------------------------------------
+// LiveInteractiveSpec — wizard that shows one interactive element at a time
+// ---------------------------------------------------------------------------
+
+function LiveInteractiveSpec({
+  spec,
+  onSubmit,
+}: {
+  spec: Spec;
+  onSubmit: (state: Record<string, unknown>) => void;
+}) {
+  // Extract wizard-steppable element keys (Tabs are excluded)
+  const interactiveKeys = useMemo(
+    () =>
+      Object.entries(spec.elements)
+        .filter(([_, el]) => WIZARD_TYPES.has(el.type))
+        .map(([key]) => key),
+    [spec],
+  );
+
+  const [step, setStep] = useState(0);
+  const store = useMemo(() => createStateStore(spec.state ?? {}), [spec]);
+  // Guard against double-advance from key repeats (e.g. holding Y on ConfirmInput)
+  const advancingRef = useRef(false);
+
+  const currentKey = interactiveKeys[step];
+  const currentElement = currentKey ? spec.elements[currentKey] : null;
+  const isLast = step >= interactiveKeys.length - 1;
+
+  // Reset the guard when the step changes
+  useEffect(() => {
+    advancingRef.current = false;
+  }, [step]);
+
+  const advance = useCallback(() => {
+    if (advancingRef.current) return;
+    advancingRef.current = true;
+    if (isLast) {
+      onSubmit(store.getSnapshot());
+    } else {
+      setStep((s) => s + 1);
+    }
+  }, [isLast, onSubmit, store]);
+
+  // Build a minimal spec containing only the current interactive element
+  const stepSpec = useMemo<Spec | null>(() => {
+    if (!currentKey || !currentElement) return null;
+
+    const elements = collectSubtree(spec, currentKey);
+
+    // Wire auto-advance events
+    const advanceEvents = getAdvanceEvents(currentElement.type);
+    if (advanceEvents) {
+      elements[currentKey] = {
+        ...elements[currentKey]!,
+        on: { ...(elements[currentKey] as any).on, ...advanceEvents },
+      };
+    }
+
+    return { root: currentKey, elements, state: spec.state };
+  }, [currentKey, currentElement, spec]);
+
+  const handlers = useMemo(() => ({ submit: advance, advance }), [advance]);
+
+  // No wizard-steppable elements (e.g. Tabs-only spec) → render the full spec
+  if (interactiveKeys.length === 0) {
+    return (
+      <Box flexDirection="column" marginBottom={1}>
+        <JSONUIProvider store={store} handlers={handlers}>
+          <Renderer spec={spec} />
+        </JSONUIProvider>
+      </Box>
+    );
+  }
+
+  if (!stepSpec || !currentElement) return null;
+
+  return (
+    <Box flexDirection="column" marginBottom={1}>
+      {interactiveKeys.length > 1 && (
+        <Text dimColor>
+          Step {step + 1} of {interactiveKeys.length}
+        </Text>
+      )}
+      <JSONUIProvider store={store} handlers={handlers}>
+        <Renderer spec={stepSpec} />
+      </JSONUIProvider>
+      <Box marginTop={1}>
+        <Text dimColor italic>
+          {getStepHint(currentElement.type, isLast)}
+        </Text>
+      </Box>
+    </Box>
+  );
+}
+
+// ---------------------------------------------------------------------------
+// App — main chat loop
+// ---------------------------------------------------------------------------
+
+export function App() {
+  const { exit } = useApp();
+  const { stdout } = useStdout();
+  const [messages, setMessages] = useState<Message[]>([]);
+  const [isStreaming, setIsStreaming] = useState(false);
+  const [streamingStatus, setStreamingStatus] = useState("Thinking...");
+  const [streamingSpec, setStreamingSpec] = useState<Spec | null>(null);
+  const nextMessageIdRef = useRef(0);
+  const abortRef = useRef<AbortController | null>(null);
+  // Ref tracks latest messages so sendMessage doesn't need it as a dep
+  const messagesRef = useRef(messages);
+  messagesRef.current = messages;
+
+  // Track a live interactive spec awaiting user input
+  const [liveSpec, setLiveSpec] = useState<Spec | null>(null);
+
+  // Ctrl+C to exit (suppress Escape when interactive spec is live)
+  useInput((_input, key) => {
+    if (key.ctrl && _input === "c") {
+      abortRef.current?.abort();
+      exit();
+    }
+    if (key.escape && !liveSpec) {
+      abortRef.current?.abort();
+      exit();
+    }
+  });
+
+  const sendMessage = useCallback(async (text: string) => {
+    abortRef.current?.abort();
+    // Clear any live interactive spec
+    setLiveSpec(null);
+    // Add user message
+    const userMsg: Message = {
+      id: nextMessageIdRef.current++,
+      role: "user",
+      text,
+      spec: null,
+    };
+    setMessages((prev) => [...prev, userMsg]);
+    setIsStreaming(true);
+    setStreamingStatus("Thinking...");
+
+    // Build conversation history from ref (avoids stale closure).
+    // For assistant messages with specs, serialize the spec so the model
+    // remembers what it rendered in previous turns.
+    const history = [
+      ...messagesRef.current.map((m) => ({
+        role: m.role as "user" | "assistant",
+        content: m.spec
+          ? `${m.text}\n\`\`\`spec\n${JSON.stringify(m.spec)}\n\`\`\``
+          : m.text,
+      })),
+      { role: "user" as const, content: text },
+    ];
+
+    const controller = new AbortController();
+    abortRef.current = controller;
+
+    try {
+      const result = streamText({
+        model: gateway(process.env.AI_GATEWAY_MODEL || DEFAULT_MODEL),
+        system: AGENT_INSTRUCTIONS,
+        messages: history,
+        temperature: 0.7,
+        abortSignal: controller.signal,
+        tools,
+        stopWhen: stepCountIs(3),
+      });
+
+      let conversationText = "";
+      let spec: Spec = { root: "", elements: {} };
+      let hasSpec = false;
+
+      const parser = createMixedStreamParser({
+        onText: (chunk) => {
+          conversationText += chunk + "\n";
+        },
+        onPatch: (patch) => {
+          hasSpec = true;
+          spec = applySpecPatch(structuredClone(spec), patch);
+          setStreamingSpec(structuredClone(spec));
+        },
+      });
+
+      let hadTextInStep = false;
+      for await (const part of result.fullStream) {
+        if (part.type === "tool-call") {
+          const name = part.toolName.replace(/_/g, " ");
+          setStreamingStatus(`Using ${name}...`);
+        } else if (part.type === "tool-result") {
+          setStreamingStatus("Generating...");
+        } else if (part.type === "text-start") {
+          hadTextInStep = false;
+        } else if (part.type === "text-delta") {
+          hadTextInStep = true;
+          parser.push(part.text);
+        } else if (part.type === "text-end") {
+          // Insert a paragraph break between text segments so text from
+          // before/after tool calls doesn't merge into a wall.
+          // Injected directly into conversationText (not through the
+          // parser, which may drop empty lines in older builds).
+          if (hadTextInStep) {
+            parser.flush();
+            conversationText += "\n\n";
+            hadTextInStep = false;
+          }
+        }
+      }
+      parser.flush();
+
+      // Finalize: add assistant message
+      const finalSpec = hasSpec ? spec : null;
+      const isInteractive = finalSpec && hasInteractiveElements(finalSpec);
+
+      const assistantMsg: Message = {
+        id: nextMessageIdRef.current++,
+        role: "assistant",
+        text: conversationText.trim(),
+        // If interactive, don't store spec in message history (it'll be live)
+        spec: isInteractive ? null : finalSpec,
+      };
+      setMessages((prev) => [...prev, assistantMsg]);
+
+      // If the spec has interactive components, keep it live
+      if (isInteractive && finalSpec) {
+        setLiveSpec(finalSpec);
+      }
+    } catch (err) {
+      if ((err as Error).name === "AbortError") return;
+      const errorMsg: Message = {
+        id: nextMessageIdRef.current++,
+        role: "assistant",
+        text: `Error: ${(err as Error).message}`,
+        spec: null,
+      };
+      setMessages((prev) => [...prev, errorMsg]);
+    } finally {
+      setIsStreaming(false);
+      setStreamingSpec(null);
+    }
+  }, []);
+
+  // Handle interactive spec submission — collect state and send back to AI
+  const handleInteractiveSubmit = useCallback(
+    (state: Record<string, unknown>) => {
+      // Freeze the spec into message history as a non-interactive snapshot
+      if (liveSpec) {
+        // Update the last assistant message to include the spec with submitted state
+        const frozenSpec = { ...liveSpec, state };
+        setMessages((prev) => {
+          const updated = [...prev];
+          // Find the last assistant message (which has spec: null for interactive)
+          for (let i = updated.length - 1; i >= 0; i--) {
+            if (updated[i]!.role === "assistant" && !updated[i]!.spec) {
+              updated[i] = { ...updated[i]!, spec: frozenSpec };
+              break;
+            }
+          }
+          return updated;
+        });
+        setLiveSpec(null);
+      }
+
+      // Format the submitted state as a user message and send to AI
+      const formattedState = Object.entries(state)
+        .map(([key, value]) => {
+          if (Array.isArray(value)) return `${key}: ${value.join(", ")}`;
+          return `${key}: ${value}`;
+        })
+        .join("\n");
+
+      sendMessage(`[Form submitted]\n${formattedState}`);
+    },
+    [liveSpec, sendMessage],
+  );
+
+  return (
+    <Box flexDirection="column" padding={1} minHeight={stdout.rows}>
+      {/* Header */}
+      <Box marginBottom={1} gap={1}>
+        <Text bold color="cyan">
+          json-render
+        </Text>
+        <Text dimColor>Ctrl+C to exit</Text>
+      </Box>
+
+      {/* Empty state — show example prompts when no conversation yet */}
+      {messages.length === 0 && !isStreaming && (
+        <Box flexDirection="column" marginBottom={1}>
+          <Text dimColor>Try asking:</Text>
+          <Box flexDirection="column" paddingLeft={2} marginTop={1} gap={0}>
+            <Text dimColor>{"  weather in tokyo"}</Text>
+            <Text dimColor>{"  top hacker news stories"}</Text>
+            <Text dimColor>{"  tell me about vercel/next.js"}</Text>
+            <Text dimColor>{"  bitcoin price"}</Text>
+          </Box>
+        </Box>
+      )}
+
+      {/* Message history — collapsed when interactive wizard is active */}
+      {liveSpec && !isStreaming ? (
+        <>
+          {messages.length > 1 && (
+            <Text dimColor italic>
+              {messages.length - 1} earlier message
+              {messages.length > 2 ? "s" : ""} hidden
+            </Text>
+          )}
+          {messages.length > 0 && (
+            <MessageView message={messages[messages.length - 1]!} />
+          )}
+          <LiveInteractiveSpec
+            spec={liveSpec}
+            onSubmit={handleInteractiveSubmit}
+          />
+        </>
+      ) : (
+        <>
+          {messages.map((msg) => (
+            <MessageView key={msg.id} message={msg} />
+          ))}
+        </>
+      )}
+
+      {/* Live spec preview while streaming */}
+      {isStreaming && streamingSpec && streamingSpec.root && (
+        <Box flexDirection="column" marginBottom={1}>
+          <JSONUIProvider initialState={streamingSpec.state ?? {}}>
+            <DisableFocus />
+            <Renderer spec={streamingSpec} loading />
+          </JSONUIProvider>
+        </Box>
+      )}
+
+      {/* Spacer pushes input to bottom when content is short */}
+      <Box flexGrow={1} />
+
+      {/* Input — spinner replaces input while streaming, hidden during wizard */}
+      {!liveSpec && (
+        <Box borderStyle="single" borderColor="gray" paddingX={1}>
+          {isStreaming ? (
+            <AnimatedSpinner label={streamingStatus} />
+          ) : (
+            <ChatInput onSubmit={sendMessage} disabled={false} />
+          )}
+        </Box>
+      )}
+    </Box>
+  );
+}

examples/ink-chat/src/catalog.ts

@@ -0,0 +1,11 @@
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/ink/schema";
+import {
+  standardComponentDefinitions,
+  standardActionDefinitions,
+} from "@json-render/ink/catalog";
+
+export const catalog = defineCatalog(schema, {
+  components: standardComponentDefinitions,
+  actions: standardActionDefinitions,
+});

examples/ink-chat/src/index.tsx

@@ -0,0 +1,8 @@
+#!/usr/bin/env node
+import { render } from "ink";
+import { App } from "./app.js";
+
+// Clear terminal and move cursor to top-left
+process.stdout.write("\x1B[2J\x1B[3J\x1B[H");
+
+render(<App />, { exitOnCtrlC: false });

examples/ink-chat/src/tools.ts

@@ -0,0 +1,384 @@
+/**
+ * Tools for the ink-chat example.
+ *
+ * All tools use free, public APIs — no API keys required beyond the
+ * AI Gateway key that is already configured.
+ *
+ * These match the tools in examples/chat for consistency across examples.
+ */
+
+import { tool, generateText } from "ai";
+import { gateway } from "@ai-sdk/gateway";
+import { z } from "zod";
+
+// =============================================================================
+// Web Search (Perplexity Sonar via AI Gateway)
+// =============================================================================
+
+export const webSearch = tool({
+  description:
+    "Search the web for current information on any topic. Returns a synthesized answer based on real-time web data.",
+  inputSchema: z.object({
+    query: z
+      .string()
+      .describe(
+        "The search query — be specific and include relevant context for better results",
+      ),
+  }),
+  execute: async ({ query }) => {
+    try {
+      const { text } = await generateText({
+        model: gateway("perplexity/sonar"),
+        prompt: query,
+      });
+      return { content: text };
+    } catch (error) {
+      return {
+        error: `Search failed: ${error instanceof Error ? error.message : "Unknown error"}`,
+      };
+    }
+  },
+});
+
+// =============================================================================
+// Weather (Open-Meteo — free, no API key)
+// =============================================================================
+
+function describeWeatherCode(code: number): string {
+  const descriptions: Record<number, string> = {
+    0: "Clear sky",
+    1: "Mainly clear",
+    2: "Partly cloudy",
+    3: "Overcast",
+    45: "Foggy",
+    48: "Depositing rime fog",
+    51: "Light drizzle",
+    53: "Moderate drizzle",
+    55: "Dense drizzle",
+    61: "Slight rain",
+    63: "Moderate rain",
+    65: "Heavy rain",
+    71: "Slight snow",
+    73: "Moderate snow",
+    75: "Heavy snow",
+    80: "Slight rain showers",
+    81: "Moderate rain showers",
+    82: "Violent rain showers",
+    95: "Thunderstorm",
+  };
+  return descriptions[code] ?? "Unknown";
+}
+
+export const getWeather = tool({
+  description:
+    "Get current weather conditions and a 7-day forecast for a given city. Returns temperature, humidity, wind speed, weather conditions, and daily forecasts.",
+  inputSchema: z.object({
+    city: z
+      .string()
+      .describe("City name (e.g., 'New York', 'London', 'Tokyo')"),
+  }),
+  execute: async ({ city }) => {
+    try {
+      const geocodeUrl = `https://geocoding-api.open-meteo.com/v1/search?name=${encodeURIComponent(city)}&count=1&language=en&format=json`;
+      const geocodeRes = await fetch(geocodeUrl);
+
+      if (!geocodeRes.ok) {
+        return { error: `Failed to geocode city: ${city}` };
+      }
+
+      const geocodeData = (await geocodeRes.json()) as {
+        results?: Array<{
+          name: string;
+          country: string;
+          latitude: number;
+          longitude: number;
+          timezone: string;
+        }>;
+      };
+
+      if (!geocodeData.results || geocodeData.results.length === 0) {
+        return { error: `City not found: ${city}` };
+      }
+
+      const location = geocodeData.results[0]!;
+
+      const weatherUrl = `https://api.open-meteo.com/v1/forecast?latitude=${location.latitude}&longitude=${location.longitude}&current=temperature_2m,relative_humidity_2m,apparent_temperature,weather_code,wind_speed_10m&daily=weather_code,temperature_2m_max,temperature_2m_min,precipitation_sum&temperature_unit=fahrenheit&wind_speed_unit=mph&precipitation_unit=inch&timezone=${encodeURIComponent(location.timezone)}&forecast_days=7`;
+
+      const weatherRes = await fetch(weatherUrl);
+
+      if (!weatherRes.ok) {
+        return { error: "Failed to fetch weather data" };
+      }
+
+      const weather = (await weatherRes.json()) as {
+        current: {
+          temperature_2m: number;
+          relative_humidity_2m: number;
+          apparent_temperature: number;
+          weather_code: number;
+          wind_speed_10m: number;
+        };
+        daily: {
+          time: string[];
+          weather_code: number[];
+          temperature_2m_max: number[];
+          temperature_2m_min: number[];
+          precipitation_sum: number[];
+        };
+      };
+
+      const forecast = weather.daily.time.map((date, i) => ({
+        date,
+        day: new Date(date + "T12:00:00").toLocaleDateString("en-US", {
+          weekday: "short",
+        }),
+        high: Math.round(weather.daily.temperature_2m_max[i]!),
+        low: Math.round(weather.daily.temperature_2m_min[i]!),
+        condition: describeWeatherCode(weather.daily.weather_code[i]!),
+        precipitation: weather.daily.precipitation_sum[i]!,
+      }));
+
+      return {
+        city: location.name,
+        country: location.country,
+        current: {
+          temperature: Math.round(weather.current.temperature_2m),
+          feelsLike: Math.round(weather.current.apparent_temperature),
+          humidity: weather.current.relative_humidity_2m,
+          windSpeed: Math.round(weather.current.wind_speed_10m),
+          condition: describeWeatherCode(weather.current.weather_code),
+        },
+        forecast,
+      };
+    } catch (error) {
+      return {
+        error: `Weather fetch failed: ${error instanceof Error ? error.message : "Unknown error"}`,
+      };
+    }
+  },
+});
+
+// =============================================================================
+// Hacker News (Firebase API — free, no API key)
+// =============================================================================
+
+export const getHackerNewsTop = tool({
+  description:
+    "Get the current top stories from Hacker News, including title, score, author, URL, and comment count.",
+  inputSchema: z.object({
+    count: z
+      .number()
+      .min(1)
+      .max(30)
+      .describe("Number of top stories to fetch (1-30)"),
+  }),
+  execute: async ({ count }) => {
+    try {
+      const topRes = await fetch(
+        "https://hacker-news.firebaseio.com/v0/topstories.json?print=pretty",
+        { signal: AbortSignal.timeout(5000) },
+      );
+
+      if (!topRes.ok) {
+        return { error: "Failed to fetch Hacker News top stories" };
+      }
+
+      const topIds = (await topRes.json()) as number[];
+      const storyIds = topIds.slice(0, count);
+
+      const stories = await Promise.all(
+        storyIds.map(async (id) => {
+          const storyRes = await fetch(
+            `https://hacker-news.firebaseio.com/v0/item/${id}.json?print=pretty`,
+            { signal: AbortSignal.timeout(5000) },
+          );
+          if (!storyRes.ok) return null;
+
+          const story = (await storyRes.json()) as {
+            id: number;
+            title: string;
+            url?: string;
+            score: number;
+            by: string;
+            time: number;
+            descendants?: number;
+          };
+
+          return {
+            title: story.title,
+            url:
+              story.url ?? `https://news.ycombinator.com/item?id=${story.id}`,
+            score: story.score,
+            author: story.by,
+            comments: story.descendants ?? 0,
+          };
+        }),
+      );
+
+      return {
+        stories: stories.filter(Boolean),
+        fetchedAt: new Date().toISOString(),
+      };
+    } catch (error) {
+      return {
+        error: `Hacker News fetch failed: ${error instanceof Error ? error.message : "Unknown error"}`,
+      };
+    }
+  },
+});
+
+// =============================================================================
+// GitHub (Public API — free, no API key, 60 req/hr)
+// =============================================================================
+
+const ghHeaders = { Accept: "application/vnd.github.v3+json" };
+
+export const getGitHubRepo = tool({
+  description:
+    "Get information about a public GitHub repository including stars, forks, open issues, description, and language breakdown.",
+  inputSchema: z.object({
+    owner: z.string().describe("Repository owner (e.g., 'vercel')"),
+    repo: z.string().describe("Repository name (e.g., 'next.js')"),
+  }),
+  execute: async ({ owner, repo }) => {
+    try {
+      const repoUrl = `https://api.github.com/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}`;
+
+      const [repoRes, languagesRes] = await Promise.all([
+        fetch(repoUrl, { headers: ghHeaders }),
+        fetch(`${repoUrl}/languages`, { headers: ghHeaders }),
+      ]);
+
+      if (!repoRes.ok) {
+        if (repoRes.status === 404)
+          return { error: `Not found: ${owner}/${repo}` };
+        return { error: `Failed to fetch repo: ${repoRes.statusText}` };
+      }
+
+      const repoData = (await repoRes.json()) as {
+        full_name: string;
+        description: string | null;
+        html_url: string;
+        stargazers_count: number;
+        forks_count: number;
+        open_issues_count: number;
+        language: string | null;
+        license: { spdx_id: string } | null;
+        topics: string[];
+      };
+
+      const languages: Record<string, number> = languagesRes.ok
+        ? ((await languagesRes.json()) as Record<string, number>)
+        : {};
+
+      const totalBytes = Object.values(languages).reduce((a, b) => a + b, 0);
+      const languageBreakdown = Object.entries(languages)
+        .map(([lang, bytes]) => ({
+          language: lang,
+          percentage:
+            totalBytes > 0 ? Math.round((bytes / totalBytes) * 100) : 0,
+        }))
+        .sort((a, b) => b.percentage - a.percentage)
+        .slice(0, 6);
+
+      return {
+        name: repoData.full_name,
+        description: repoData.description,
+        url: repoData.html_url,
+        stars: repoData.stargazers_count,
+        forks: repoData.forks_count,
+        openIssues: repoData.open_issues_count,
+        primaryLanguage: repoData.language,
+        license: repoData.license?.spdx_id ?? "None",
+        topics: repoData.topics,
+        languages: languageBreakdown,
+      };
+    } catch (error) {
+      return {
+        error: `GitHub fetch failed: ${error instanceof Error ? error.message : "Unknown error"}`,
+      };
+    }
+  },
+});
+
+// =============================================================================
+// Crypto (CoinGecko — free, no API key)
+// =============================================================================
+
+export const getCryptoPrice = tool({
+  description:
+    "Get current price, market cap, 24h change, and 7-day trend for a cryptocurrency.",
+  inputSchema: z.object({
+    coinId: z
+      .string()
+      .describe(
+        "CoinGecko coin ID (e.g., 'bitcoin', 'ethereum', 'solana', 'dogecoin')",
+      ),
+  }),
+  execute: async ({ coinId }) => {
+    try {
+      const url = `https://api.coingecko.com/api/v3/coins/${encodeURIComponent(coinId)}?localization=false&tickers=false&community_data=false&developer_data=false&sparkline=false`;
+
+      const res = await fetch(url, {
+        headers: { Accept: "application/json" },
+      });
+
+      if (!res.ok) {
+        if (res.status === 404)
+          return { error: `Cryptocurrency not found: ${coinId}` };
+        if (res.status === 429)
+          return {
+            error: "CoinGecko rate limit exceeded. Try again in a minute.",
+          };
+        return { error: `Failed to fetch crypto data: ${res.statusText}` };
+      }
+
+      const data = (await res.json()) as {
+        id: string;
+        symbol: string;
+        name: string;
+        market_data: {
+          current_price: { usd: number };
+          market_cap: { usd: number };
+          total_volume: { usd: number };
+          price_change_percentage_24h: number;
+          price_change_percentage_7d: number;
+          high_24h: { usd: number };
+          low_24h: { usd: number };
+        };
+        market_cap_rank: number;
+      };
+
+      const md = data.market_data;
+
+      return {
+        symbol: data.symbol.toUpperCase(),
+        name: data.name,
+        rank: data.market_cap_rank,
+        price: md.current_price.usd,
+        marketCap: md.market_cap.usd,
+        volume24h: md.total_volume.usd,
+        change24h: Math.round(md.price_change_percentage_24h * 100) / 100,
+        change7d: Math.round(md.price_change_percentage_7d * 100) / 100,
+        high24h: md.high_24h.usd,
+        low24h: md.low_24h.usd,
+      };
+    } catch (error) {
+      return {
+        error: `Crypto fetch failed: ${error instanceof Error ? error.message : "Unknown error"}`,
+      };
+    }
+  },
+});
+
+// =============================================================================
+// All tools (exported as a single record for streamText)
+// =============================================================================
+
+export const tools = {
+  web_search: webSearch,
+  get_weather: getWeather,
+  get_hacker_news: getHackerNewsTop,
+  get_github_repo: getGitHubRepo,
+  get_crypto_price: getCryptoPrice,
+};

examples/ink-chat/tsconfig.json

@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "jsx": "react-jsx",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "types": ["node"],
+    "outDir": "dist",
+    "rootDir": "src",
+    "declaration": true
+  },
+  "include": ["src"]
+}

examples/mcp/CHANGELOG.md

@@ -1,5 +1,15 @@
 # example-mcp
 
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/mcp@0.15.0
+  - @json-render/react@0.15.0
+  - @json-render/shadcn@0.15.0
+
 ## 0.1.5
 
 ### Patch Changes

examples/mcp/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-mcp",
-  "version": "0.1.5",
+  "version": "0.1.6",
   "type": "module",
   "private": true,
   "scripts": {

examples/no-ai/CHANGELOG.md

@@ -1,5 +1,14 @@
 # example-no-ai
 
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react@0.15.0
+  - @json-render/shadcn@0.15.0
+
 ## 0.1.9
 
 ### Patch Changes

examples/no-ai/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-no-ai",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "type": "module",
   "private": true,
   "scripts": {

examples/react-email/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-react-email
 
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react-email@0.15.0
+
 ## 0.1.5
 
 ### Patch Changes

examples/react-email/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-react-email",
-  "version": "0.1.5",
+  "version": "0.1.6",
   "type": "module",
   "private": true,
   "scripts": {

examples/react-native/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-react-native
 
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react-native@0.15.0
+
 ## 0.1.9
 
 ### Patch Changes

examples/react-native/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-react-native",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "private": true,
   "main": "expo-router/entry",
   "scripts": {

examples/react-pdf/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-react-pdf
 
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react-pdf@0.15.0
+
 ## 0.1.9
 
 ### Patch Changes

examples/react-pdf/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-react-pdf",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "type": "module",
   "private": true,
   "scripts": {

examples/react-three-fiber/CHANGELOG.md

@@ -1,5 +1,14 @@
 # example-react-three-fiber
 
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react@0.15.0
+  - @json-render/react-three-fiber@0.15.0
+
 ## 0.1.9
 
 ### Patch Changes

examples/react-three-fiber/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-react-three-fiber",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "type": "module",
   "private": true,
   "scripts": {

examples/remotion/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-remotion
 
+## 0.1.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/remotion@0.15.0
+
 ## 0.1.9
 
 ### Patch Changes

examples/remotion/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-remotion",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "type": "module",
   "private": true,
   "scripts": {

examples/solid/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-solid
 
+## 0.1.4
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/solid@0.15.0
+
 ## 0.1.3
 
 ### Patch Changes

examples/solid/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-solid",
-  "version": "0.1.3",
+  "version": "0.1.4",
   "private": true,
   "type": "module",
   "scripts": {

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

@@ -1,5 +1,13 @@
 # com.example.json-render-demo
 
+## 0.0.11
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react@0.15.0
+
 ## 0.0.10
 
 ### Patch Changes

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

@@ -1,6 +1,6 @@
 {
   "name": "com.example.json-render-demo",
-  "version": "0.0.10",
+  "version": "0.0.11",
   "description": "Test",
   "private": true,
   "license": "~~proprietary~~",

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

@@ -1,5 +1,13 @@
 # com.example.json-render-fullpage-demo
 
+## 0.0.11
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react@0.15.0
+
 ## 0.0.10
 
 ### Patch Changes

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

@@ -1,6 +1,6 @@
 {
   "name": "com.example.json-render-fullpage-demo",
-  "version": "0.0.10",
+  "version": "0.0.11",
   "description": "Full-page Stripe App example (alpha)",
   "private": true,
   "license": "~~proprietary~~",

examples/svelte-chat/CHANGELOG.md

@@ -1,5 +1,13 @@
 # svelte-chat
 
+## 0.0.7
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/svelte@0.15.0
+
 ## 0.0.6
 
 ### Patch Changes

examples/svelte-chat/package.json

@@ -1,7 +1,7 @@
 {
   "name": "svelte-chat",
   "private": true,
-  "version": "0.0.6",
+  "version": "0.0.7",
   "type": "module",
   "scripts": {
     "dev": "vite dev",

examples/svelte/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-svelte
 
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/svelte@0.15.0
+
 ## 0.1.6
 
 ### Patch Changes

examples/svelte/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-svelte",
-  "version": "0.1.6",
+  "version": "0.1.7",
   "private": true,
   "type": "module",
   "scripts": {

examples/vite-renderers/CHANGELOG.md

@@ -1,5 +1,16 @@
 # vite-renderers
 
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react@0.15.0
+  - @json-render/solid@0.15.0
+  - @json-render/svelte@0.15.0
+  - @json-render/vue@0.15.0
+
 ## 0.1.7
 
 ### Patch Changes

examples/vite-renderers/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vite-renderers",
-  "version": "0.1.7",
+  "version": "0.1.8",
   "private": true,
   "type": "module",
   "scripts": {

examples/vue/CHANGELOG.md

@@ -1,5 +1,13 @@
 # example-vue
 
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/vue@0.15.0
+
 ## 0.1.7
 
 ### Patch Changes

examples/vue/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-vue",
-  "version": "0.1.7",
+  "version": "0.1.8",
   "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)",

packages/codegen/CHANGELOG.md

@@ -1,5 +1,12 @@
 # @json-render/codegen
 
+## 0.15.0
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+
 ## 0.14.1
 
 ### Patch Changes

packages/codegen/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/codegen",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "Utilities for generating code from json-render UI trees",
   "keywords": [

packages/core/CHANGELOG.md

@@ -1,5 +1,17 @@
 # @json-render/core
 
+## 0.15.0
+
+### Minor Changes
+
+- bf3a7ec: Add Ink terminal renderer for interactive terminal UIs.
+
+  ### New:
+  - **`@json-render/ink`** -- Terminal UI renderer for json-render, built on Ink. Includes 20+ standard components (Box, Text, Heading, Card, Table, TextInput, Select, MultiSelect, Tabs, etc.), action/validation/focus contexts, two-way state binding, and streaming via `useUIStream`. Server-safe entry points at `@json-render/ink/schema`, `@json-render/ink/catalog`, and `@json-render/ink/server`.
+
+  ### Improved:
+  - **Examples** -- new `ink-chat` terminal chat demo, `game-engine` 3D example using react-three-fiber, website examples page with live demos and search.
+
 ## 0.14.1
 
 ### Patch Changes

packages/core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/core",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "JSON becomes real things. Define your catalog, register your components, let AI generate.",
   "keywords": [

packages/image/CHANGELOG.md

@@ -1,5 +1,12 @@
 # @json-render/image
 
+## 0.15.0
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+
 ## 0.14.1
 
 ### Patch Changes

packages/image/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/image",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "Image renderer for @json-render/core. JSON becomes SVG and PNG images via Satori.",
   "keywords": [

packages/ink/CHANGELOG.md

@@ -0,0 +1,18 @@
+# @json-render/ink
+
+## 0.15.0
+
+### Minor Changes
+
+- bf3a7ec: Add Ink terminal renderer for interactive terminal UIs.
+
+  ### New:
+  - **`@json-render/ink`** -- Terminal UI renderer for json-render, built on Ink. Includes 20+ standard components (Box, Text, Heading, Card, Table, TextInput, Select, MultiSelect, Tabs, etc.), action/validation/focus contexts, two-way state binding, and streaming via `useUIStream`. Server-safe entry points at `@json-render/ink/schema`, `@json-render/ink/catalog`, and `@json-render/ink/server`.
+
+  ### Improved:
+  - **Examples** -- new `ink-chat` terminal chat demo, `game-engine` 3D example using react-three-fiber, website examples page with live demos and search.
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0

packages/ink/README.md

@@ -0,0 +1,139 @@
+# @json-render/ink
+
+Ink terminal renderer for json-render. Turn JSON specs into interactive terminal UIs.
+
+## Installation
+
+```bash
+npm install @json-render/ink @json-render/core ink react
+```
+
+Peer dependencies: `ink ^6.0.0` and `react ^19.0.0`.
+
+## Quick Start
+
+### 1. Create a Catalog
+
+```typescript
+import { defineCatalog } from "@json-render/core";
+import { schema } from "@json-render/ink/schema";
+import {
+  standardComponentDefinitions,
+  standardActionDefinitions,
+} from "@json-render/ink/catalog";
+
+export const catalog = defineCatalog(schema, {
+  components: standardComponentDefinitions,
+  actions: standardActionDefinitions,
+});
+```
+
+### 2. Render a Spec
+
+```tsx
+import { render } from "ink";
+import { createRenderer, standardComponents } from "@json-render/ink";
+import { catalog } from "./catalog";
+
+const InkRenderer = createRenderer(catalog, standardComponents);
+
+const spec = {
+  root: "heading",
+  elements: {
+    heading: {
+      type: "Heading",
+      props: { text: "Hello from the terminal!", level: "h1" },
+      children: [],
+    },
+  },
+};
+
+render(<InkRenderer spec={spec} state={{}} />);
+```
+
+## Standard Components
+
+### Layout
+
+| Component | Description |
+|-----------|-------------|
+| `Box` | Flexbox layout container (like a terminal `<div>`) |
+| `Text` | Text output with optional styling (color, bold, italic, etc.) |
+| `Newline` | Inserts one or more blank lines |
+| `Spacer` | Flexible empty space that expands to fill available room |
+
+### Content
+
+| Component | Description |
+|-----------|-------------|
+| `Heading` | Section heading (h1–h4) |
+| `Divider` | Horizontal separator line with optional title |
+| `Badge` | Small colored inline label for status |
+| `Spinner` | Animated loading spinner with optional label |
+| `ProgressBar` | Horizontal progress bar (0–1) |
+| `Sparkline` | Inline sparkline chart using Unicode blocks |
+| `BarChart` | Horizontal bar chart with labels and values |
+| `Table` | Tabular data display with headers and rows |
+| `List` | Bulleted or numbered list |
+| `ListItem` | Structured list row with title, subtitle, leading/trailing |
+| `Card` | Bordered container with optional title |
+| `KeyValue` | Key-value pair display |
+| `Link` | Clickable URL |
+| `StatusLine` | Status message with colored icon |
+| `Markdown` | Renders markdown-formatted text with terminal styling |
+
+### Interactive
+
+| Component | Description |
+|-----------|-------------|
+| `TextInput` | Text input field with two-way binding |
+| `Select` | Selection menu navigated with arrow keys |
+| `MultiSelect` | Multi-selection with space to toggle, enter to confirm |
+| `ConfirmInput` | Yes/No confirmation prompt |
+| `Tabs` | Tab bar navigation with left/right arrow keys |
+
+## Generate AI Prompts
+
+```typescript
+const systemPrompt = catalog.prompt({ system: "You are a terminal assistant." });
+```
+
+## Streaming
+
+Use `useUIStream` to progressively render specs from JSONL patch streams:
+
+```tsx
+import { useUIStream } from "@json-render/ink";
+
+const { spec, send, isStreaming } = useUIStream({ api: "/api/generate" });
+```
+
+## Key Exports
+
+| Export | Purpose |
+|--------|---------|
+| `createRenderer` | Create an all-in-one renderer component from a catalog |
+| `Renderer` | Low-level spec renderer |
+| `JSONUIProvider` | Combined provider (state, visibility, validation, actions, focus) |
+| `standardComponents` | Pre-built component implementations for all standard components |
+| `schema` | Ink element tree schema |
+| `useStateStore` | Access state context (`state`, `get`, `set`, `update`) |
+| `useStateValue` | Get single value from state |
+| `useBoundProp` | Two-way binding for `$bindState`/`$bindItem` expressions |
+| `useUIStream` | Stream specs from an API endpoint |
+| `createStateStore` | Create a framework-agnostic in-memory `StateStore` |
+
+### Catalog Entry Points
+
+| Entry Point | Exports |
+|-------------|---------|
+| `@json-render/ink` | Components, renderer, hooks, providers |
+| `@json-render/ink/schema` | `schema`, `InkSchema`, `InkSpec` |
+| `@json-render/ink/catalog` | `standardComponentDefinitions`, `standardActionDefinitions` |
+| `@json-render/ink/server` | Server-safe re-exports (schema + catalog, no React dependency) |
+
+## Documentation
+
+- [API Reference](https://json-render.dev/docs/api/ink)
+- [Renderers Overview](https://json-render.dev/docs/renderers)
+- [Ink Chat Example](https://github.com/vercel-labs/json-render/tree/main/examples/ink-chat)

packages/ink/package.json

@@ -0,0 +1,79 @@
+{
+  "name": "@json-render/ink",
+  "version": "0.15.0",
+  "license": "Apache-2.0",
+  "description": "Ink terminal renderer for @json-render/core. JSON becomes terminal UIs.",
+  "keywords": [
+    "json",
+    "cli",
+    "terminal",
+    "ink",
+    "ai",
+    "generative-ui",
+    "llm",
+    "renderer",
+    "tui"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/vercel-labs/json-render.git",
+    "directory": "packages/ink"
+  },
+  "homepage": "https://json-render.dev",
+  "bugs": {
+    "url": "https://github.com/vercel-labs/json-render/issues"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "main": "./dist/index.js",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.mjs",
+      "require": "./dist/index.js"
+    },
+    "./schema": {
+      "types": "./dist/schema.d.ts",
+      "import": "./dist/schema.mjs",
+      "require": "./dist/schema.js"
+    },
+    "./catalog": {
+      "types": "./dist/catalog.d.ts",
+      "import": "./dist/catalog.mjs",
+      "require": "./dist/catalog.js"
+    },
+    "./server": {
+      "types": "./dist/server.d.ts",
+      "import": "./dist/server.mjs",
+      "require": "./dist/server.js"
+    }
+  },
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "build": "tsup",
+    "dev": "tsup --watch",
+    "check-types": "tsc --noEmit",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@json-render/core": "workspace:*",
+    "marked": "^17.0.0"
+  },
+  "devDependencies": {
+    "@internal/react-state": "workspace:*",
+    "@internal/typescript-config": "workspace:*",
+    "@types/react": "19.2.3",
+    "tsup": "^8.0.2",
+    "typescript": "^5.4.5",
+    "zod": "^4.3.6"
+  },
+  "peerDependencies": {
+    "ink": "^6.0.0",
+    "react": "^19.0.0"
+  }
+}

packages/ink/src/catalog-types.ts

@@ -0,0 +1,102 @@
+import type { ReactNode } from "react";
+import type {
+  Catalog,
+  InferCatalogComponents,
+  InferCatalogActions,
+  InferComponentProps,
+  InferActionParams,
+  StateModel,
+} from "@json-render/core";
+
+export type { StateModel };
+
+// =============================================================================
+// State Types
+// =============================================================================
+
+/**
+ * State setter function for updating application state
+ */
+export type SetState = (path: string, value: unknown) => void;
+
+// =============================================================================
+// Component Types
+// =============================================================================
+
+/**
+ * Context passed to component render functions
+ * @example
+ * const StatusBadge: ComponentFn<typeof catalog, 'Badge'> = (ctx) => {
+ *   return <Text color="green">{ctx.props.label}</Text>
+ * }
+ */
+export interface ComponentContext<
+  C extends Catalog,
+  K extends keyof InferCatalogComponents<C>,
+> {
+  props: InferComponentProps<C, K>;
+  children?: ReactNode;
+  /** Emit a named event. The renderer resolves the event to an action binding from the element's `on` field. */
+  emit: (event: string) => void;
+  /**
+   * Two-way binding paths resolved from `$bindState` / `$bindItem` expressions.
+   * Maps prop name → absolute state path for write-back.
+   */
+  bindings?: Record<string, string>;
+  loading?: boolean;
+}
+
+/**
+ * Component render function type for Ink
+ * @example
+ * const Badge: ComponentFn<typeof catalog, 'Badge'> = ({ props }) => (
+ *   <Text color="green">{props.label}</Text>
+ * );
+ */
+export type ComponentFn<
+  C extends Catalog,
+  K extends keyof InferCatalogComponents<C>,
+> = (ctx: ComponentContext<C, K>) => ReactNode;
+
+/**
+ * Registry of all component render functions for a catalog
+ * @example
+ * const components: Components<typeof myCatalog> = {
+ *   Badge: ({ props }) => <Text color="green">{props.label}</Text>,
+ *   Card: ({ props, children }) => <Box borderStyle="round">{children}</Box>,
+ * };
+ */
+export type Components<C extends Catalog> = {
+  [K in keyof InferCatalogComponents<C>]: ComponentFn<C, K>;
+};
+
+// =============================================================================
+// Action Types
+// =============================================================================
+
+/**
+ * Action handler function type
+ * @example
+ * const exit: ActionFn<typeof catalog, 'exit'> = async (params, setState) => {
+ *   process.exit(0);
+ * };
+ */
+export type ActionFn<
+  C extends Catalog,
+  K extends keyof InferCatalogActions<C>,
+> = (
+  params: InferActionParams<C, K> | undefined,
+  setState: SetState,
+  state: StateModel,
+) => Promise<void>;
+
+/**
+ * Registry of all action handlers for a catalog
+ * @example
+ * const actions: Actions<typeof myCatalog> = {
+ *   exit: async (params, setState) => { process.exit(0); },
+ * };
+ */
+export type Actions<C extends Catalog> = {
+  [K in keyof InferCatalogActions<C>]: ActionFn<C, K>;
+};

packages/ink/src/catalog.ts

@@ -0,0 +1,629 @@
+import { z } from "zod";
+
+// =============================================================================
+// Standard Component Definitions for Ink (Terminal)
+// =============================================================================
+
+/**
+ * Standard component definitions for Ink terminal catalogs.
+ *
+ * These can be used directly or extended with custom components.
+ * All components are built using Ink core primitives only.
+ */
+export const standardComponentDefinitions = {
+  // ==========================================================================
+  // Layout Components (Ink Primitives)
+  // ==========================================================================
+
+  Box: {
+    props: z.object({
+      flexDirection: z
+        .enum(["row", "row-reverse", "column", "column-reverse"])
+        .nullable(),
+      alignItems: z
+        .enum(["flex-start", "center", "flex-end", "stretch"])
+        .nullable(),
+      justifyContent: z
+        .enum([
+          "flex-start",
+          "center",
+          "flex-end",
+          "space-between",
+          "space-around",
+          "space-evenly",
+        ])
+        .nullable(),
+      flexGrow: z.number().nullable(),
+      flexShrink: z.number().nullable(),
+      flexWrap: z.enum(["nowrap", "wrap", "wrap-reverse"]).nullable(),
+      width: z.union([z.number().max(500), z.string()]).nullable(),
+      height: z.union([z.number().max(500), z.string()]).nullable(),
+      minWidth: z.union([z.number().max(500), z.string()]).nullable(),
+      minHeight: z.union([z.number().max(500), z.string()]).nullable(),
+      padding: z.number().nullable(),
+      paddingX: z.number().nullable(),
+      paddingY: z.number().nullable(),
+      paddingTop: z.number().nullable(),
+      paddingBottom: z.number().nullable(),
+      paddingLeft: z.number().nullable(),
+      paddingRight: z.number().nullable(),
+      margin: z.number().nullable(),
+      marginX: z.number().nullable(),
+      marginY: z.number().nullable(),
+      marginTop: z.number().nullable(),
+      marginBottom: z.number().nullable(),
+      marginLeft: z.number().nullable(),
+      marginRight: z.number().nullable(),
+      gap: z.number().nullable(),
+      columnGap: z.number().nullable(),
+      rowGap: z.number().nullable(),
+      borderStyle: z
+        .enum([
+          "single",
+          "double",
+          "round",
+          "bold",
+          "singleDouble",
+          "doubleSingle",
+          "classic",
+        ])
+        .nullable(),
+      borderColor: z.string().nullable(),
+      borderTop: z.boolean().nullable(),
+      borderBottom: z.boolean().nullable(),
+      borderLeft: z.boolean().nullable(),
+      borderRight: z.boolean().nullable(),
+      borderDimColor: z.boolean().nullable(),
+      display: z.enum(["flex", "none"]).nullable(),
+      overflow: z.enum(["visible", "hidden"]).nullable(),
+      backgroundColor: z.string().nullable(),
+    }),
+    slots: ["default"],
+    description:
+      "Flexbox layout container (like a terminal <div>). Use for grouping, spacing, borders, and alignment. Default flexDirection is row.",
+    example: {
+      flexDirection: "column",
+      padding: 1,
+      gap: 1,
+      borderStyle: "round",
+    },
+  },
+
+  Text: {
+    props: z.object({
+      text: z.string(),
+      color: z.string().nullable(),
+      backgroundColor: z.string().nullable(),
+      bold: z.boolean().nullable(),
+      italic: z.boolean().nullable(),
+      underline: z.boolean().nullable(),
+      strikethrough: z.boolean().nullable(),
+      dimColor: z.boolean().nullable(),
+      inverse: z.boolean().nullable(),
+      wrap: z
+        .enum([
+          "wrap",
+          "truncate",
+          "truncate-end",
+          "truncate-middle",
+          "truncate-start",
+        ])
+        .nullable(),
+    }),
+    slots: [],
+    description:
+      "Text output with optional styling (color, bold, italic, etc.). Use for all text content in the terminal.",
+    example: { text: "Hello, world!", bold: true, color: "green" },
+  },
+
+  Newline: {
+    props: z.object({
+      count: z.number().nullable(),
+    }),
+    slots: [],
+    description:
+      "Inserts one or more blank lines. Must be placed inside a Box with flexDirection column.",
+    example: { count: 1 },
+  },
+
+  Spacer: {
+    props: z.object({}),
+    slots: [],
+    description:
+      "Flexible empty space that expands to fill available room along the main axis. Use between elements to push them apart.",
+  },
+
+  // ==========================================================================
+  // Content Components (Higher-Level)
+  // ==========================================================================
+
+  Heading: {
+    props: z.object({
+      text: z.string(),
+      level: z.enum(["h1", "h2", "h3", "h4"]).nullable(),
+      color: z.string().nullable(),
+    }),
+    slots: [],
+    description:
+      "Section heading. h1 is bold + underlined, h2 is bold, h3 is bold + dimmed, h4 is dimmed.",
+    example: { text: "Dashboard", level: "h1" },
+  },
+
+  Divider: {
+    props: z.object({
+      character: z.string().nullable(),
+      color: z.string().nullable(),
+      dimColor: z.boolean().nullable(),
+      title: z.string().nullable(),
+      width: z.number().max(500).nullable(),
+    }),
+    slots: [],
+    description:
+      "Horizontal separator line. Default width is 40 characters. Optionally includes a centered title.",
+    example: { title: "Section", color: "gray", width: 40 },
+  },
+
+  Badge: {
+    props: z.object({
+      label: z.string(),
+      variant: z
+        .enum(["default", "info", "success", "warning", "error"])
+        .nullable(),
+    }),
+    slots: [],
+    description:
+      "Small colored inline label for status, counts, and categories.",
+    example: { label: "ACTIVE", variant: "success" },
+  },
+
+  Spinner: {
+    props: z.object({
+      label: z.string().nullable(),
+      color: z.string().nullable(),
+    }),
+    slots: [],
+    description:
+      "Animated loading spinner with optional label text. Uses braille animation characters.",
+    example: { label: "Loading...", color: "cyan" },
+  },
+
+  ProgressBar: {
+    props: z.object({
+      progress: z.number(),
+      width: z.number().max(500).nullable(),
+      color: z.string().nullable(),
+      label: z.string().nullable(),
+    }),
+    slots: [],
+    description:
+      "Horizontal progress bar. Set progress from 0 to 1. Default width is 30 characters.",
+    example: { progress: 0.65, width: 30, color: "green", label: "Uploading" },
+  },
+
+  Sparkline: {
+    props: z.object({
+      data: z.array(z.number()),
+      width: z.number().max(500).nullable(),
+      color: z.string().nullable(),
+      label: z.string().nullable(),
+      min: z.number().nullable(),
+      max: z.number().nullable(),
+    }),
+    slots: [],
+    description:
+      "Inline sparkline chart using Unicode block characters (▁▂▃▄▅▆▇█). Pass an array of numbers to visualize trends compactly. Set min/max to fix the scale across multiple sparklines.",
+    example: {
+      data: [3, 7, 2, 9, 4, 8, 1, 6, 5],
+      color: "cyan",
+      label: "CPU",
+    },
+  },
+
+  BarChart: {
+    props: z.object({
+      data: z.array(
+        z.object({
+          label: z.string(),
+          value: z.number(),
+          color: z.string().nullable(),
+        }),
+      ),
+      width: z.number().max(500).nullable(),
+      showValues: z.boolean().nullable(),
+      showPercentage: z.boolean().nullable(),
+    }),
+    slots: [],
+    description:
+      "Horizontal bar chart. Each item has a label, numeric value, and optional color. Set showValues to display raw numbers, showPercentage to show % of total. Default bar width is 30.",
+    example: {
+      data: [
+        { label: "TypeScript", value: 65, color: "blue" },
+        { label: "Python", value: 20, color: "yellow" },
+        { label: "Rust", value: 15, color: "red" },
+      ],
+      showPercentage: true,
+    },
+  },
+
+  Table: {
+    props: z.object({
+      columns: z.array(
+        z.object({
+          header: z.string(),
+          key: z.string(),
+          width: z.number().max(200).nullable(),
+          align: z.enum(["left", "center", "right"]).nullable(),
+        }),
+      ),
+      rows: z.array(z.record(z.string(), z.string())),
+      borderStyle: z
+        .enum(["single", "double", "round", "bold", "classic"])
+        .nullable(),
+      backgroundColor: z.string().nullable(),
+      headerColor: z.string().nullable(),
+    }),
+    slots: [],
+    description:
+      "Tabular data display with headers and rows. Each row is a record mapping column keys to string values. Set both borderStyle and backgroundColor together so borders share the same shading.",
+    example: {
+      columns: [
+        { header: "Name", key: "name", width: 20 },
+        { header: "Status", key: "status", width: 10 },
+      ],
+      rows: [
+        { name: "api-server", status: "running" },
+        { name: "worker", status: "stopped" },
+      ],
+      headerColor: "cyan",
+    },
+  },
+
+  List: {
+    props: z.object({
+      items: z.array(z.string()),
+      ordered: z.boolean().nullable(),
+      bulletChar: z.string().nullable(),
+      spacing: z.number().nullable(),
+    }),
+    slots: [],
+    description:
+      "Bulleted or numbered list. Each item is a string. Use for simple enumerations.",
+    example: {
+      items: ["Install dependencies", "Run tests", "Deploy"],
+      ordered: true,
+    },
+  },
+
+  ListItem: {
+    props: z.object({
+      title: z.string(),
+      subtitle: z.string().nullable(),
+      leading: z.string().nullable(),
+      trailing: z.string().nullable(),
+    }),
+    slots: [],
+    description:
+      "Structured list row with title, optional subtitle, and leading/trailing text. Use with repeat for dynamic lists.",
+    example: {
+      title: "package.json",
+      subtitle: "Modified 2 hours ago",
+      leading: "*",
+      trailing: "2.1 KB",
+    },
+  },
+
+  Card: {
+    props: z.object({
+      title: z.string().nullable(),
+      backgroundColor: z.string().nullable(),
+      padding: z.number().nullable(),
+    }),
+    slots: ["default"],
+    description:
+      "Shaded container with optional title. Renders as a filled background area for grouping related content. Default background is a subtle dark shade.",
+    example: { title: "Details", padding: 1 },
+  },
+
+  KeyValue: {
+    props: z.object({
+      label: z.string(),
+      value: z.union([z.string(), z.number(), z.array(z.string())]),
+      labelColor: z.string().nullable(),
+      separator: z.string().nullable(),
+    }),
+    slots: [],
+    description:
+      "Key-value pair display. Renders label and value on the same line. Value can be a string, number, or array of strings (joined with commas). Default separator is a colon.",
+    example: { label: "Status", value: "Running", labelColor: "cyan" },
+  },
+
+  Link: {
+    props: z.object({
+      url: z.string(),
+      label: z.string().nullable(),
+      color: z.string().nullable(),
+    }),
+    slots: [],
+    description:
+      'Renders a URL as underlined text. If label is provided, shows "label (url)". Most terminals make URLs clickable automatically.',
+    example: { url: "https://github.com/vercel/next.js", label: "Next.js" },
+  },
+
+  StatusLine: {
+    props: z.object({
+      text: z.string(),
+      status: z.enum(["info", "success", "warning", "error"]).nullable(),
+      icon: z.string().nullable(),
+    }),
+    slots: [],
+    description:
+      "Status message with colored icon. Default icons: info=ℹ, success=✔, warning=⚠, error=✖.",
+    example: { text: "Build completed successfully", status: "success" },
+  },
+
+  Metric: {
+    props: z.object({
+      label: z.string(),
+      value: z.string(),
+      detail: z.string().nullable(),
+      trend: z.enum(["up", "down", "neutral"]).nullable(),
+    }),
+    slots: [],
+    description:
+      "Key metric display with prominent value and optional trend indicator. Use for important numbers that deserve visual emphasis (price, temperature, stars, market cap).",
+    example: {
+      label: "Price",
+      value: "$70,686",
+      detail: "24h change",
+      trend: "up",
+    },
+  },
+
+  Callout: {
+    props: z.object({
+      type: z.enum(["info", "tip", "warning", "important"]).nullable(),
+      title: z.string().nullable(),
+      content: z.string(),
+    }),
+    slots: [],
+    description:
+      "Highlighted callout block with colored left border. Use for key takeaways, tips, warnings, or important notes that should stand out from surrounding content.",
+    example: {
+      type: "tip",
+      title: "Key Takeaway",
+      content:
+        "Revenue peaked in FY2022 driven by iPhone 13/14 upgrade cycles.",
+    },
+  },
+
+  Timeline: {
+    props: z.object({
+      items: z.array(
+        z.object({
+          title: z.string(),
+          description: z.string().nullable(),
+          date: z.string().nullable(),
+          status: z.enum(["completed", "current", "upcoming"]).nullable(),
+        }),
+      ),
+    }),
+    slots: [],
+    description:
+      "Vertical timeline showing ordered events, steps, or milestones. Each item has a status-colored dot, title, optional date, and optional description.",
+    example: {
+      items: [
+        {
+          title: "Project Started",
+          description: "Initial commit and setup",
+          date: "Jan 2024",
+          status: "completed",
+        },
+        {
+          title: "Beta Release",
+          description: "Public beta launched",
+          date: "Mar 2024",
+          status: "current",
+        },
+        { title: "v1.0", date: "Q2 2024", status: "upcoming" },
+      ],
+    },
+  },
+
+  // ==========================================================================
+  // Interactive Components
+  // ==========================================================================
+
+  TextInput: {
+    props: z.object({
+      placeholder: z.string().nullable(),
+      value: z.string().nullable(),
+      label: z.string().nullable(),
+      mask: z.string().nullable(),
+    }),
+    events: ["submit", "change"],
+    slots: [],
+    description:
+      "Text input field for terminal. Use $bindState to bind to the state model for two-way binding. Press Enter to submit. Set mask to '*' for password fields.",
+    example: { placeholder: "Type here...", label: "Name" },
+  },
+
+  Select: {
+    props: z.object({
+      options: z.array(
+        z.object({
+          label: z.string(),
+          value: z.string(),
+        }),
+      ),
+      value: z.string().nullable(),
+      label: z.string().nullable(),
+    }),
+    events: ["change"],
+    slots: [],
+    description:
+      "Selection menu navigated with arrow keys. Use $bindState on value to bind the selected value to state. Press Enter to confirm selection.",
+    example: {
+      options: [
+        { label: "Development", value: "dev" },
+        { label: "Staging", value: "staging" },
+        { label: "Production", value: "prod" },
+      ],
+      label: "Environment",
+    },
+  },
+
+  MultiSelect: {
+    props: z.object({
+      options: z.array(
+        z.object({
+          label: z.string(),
+          value: z.string(),
+        }),
+      ),
+      value: z.array(z.string()).nullable(),
+      label: z.string().nullable(),
+      min: z.number().nullable(),
+      max: z.number().nullable(),
+    }),
+    events: ["change", "submit"],
+    slots: [],
+    description:
+      "Multi-selection menu. Navigate with arrow keys, toggle with space, confirm with enter. Use $bindState on value to bind the selected values array to state. Set min/max to constrain selection count.",
+    example: {
+      options: [
+        { label: "TypeScript", value: "ts" },
+        { label: "Python", value: "py" },
+        { label: "Rust", value: "rs" },
+        { label: "Go", value: "go" },
+      ],
+      label: "Languages",
+    },
+  },
+
+  ConfirmInput: {
+    props: z.object({
+      message: z.string().nullable(),
+      defaultValue: z.boolean().nullable(),
+      yesLabel: z.string().nullable(),
+      noLabel: z.string().nullable(),
+    }),
+    events: ["confirm", "deny"],
+    slots: [],
+    description:
+      "Yes/No confirmation prompt. Press Y to confirm, N to deny. Use for destructive or irreversible actions.",
+    example: {
+      message: "Delete all files?",
+    },
+  },
+
+  Tabs: {
+    props: z.object({
+      tabs: z.array(
+        z.object({
+          label: z.string(),
+          value: z.string(),
+          icon: z.string().nullable(),
+        }),
+      ),
+      value: z.string().nullable(),
+      color: z.string().nullable(),
+    }),
+    events: ["change"],
+    slots: ["default"],
+    description:
+      "Tab bar navigation. Navigate with left/right arrow keys. Use $bindState on value to bind the active tab to state. Place child content inside and use visible conditions on children to show content for the active tab.",
+    example: {
+      tabs: [
+        { label: "Overview", value: "overview" },
+        { label: "Logs", value: "logs" },
+        { label: "Settings", value: "settings" },
+      ],
+    },
+  },
+
+  Markdown: {
+    props: z.object({
+      text: z.string(),
+    }),
+    slots: [],
+    description:
+      "Renders markdown-formatted text with proper terminal styling. Supports headings (#), **bold**, *italic*, `inline code`, ~~strikethrough~~, fenced code blocks, lists (ordered and unordered), blockquotes (>), and horizontal rules (---).",
+    example: {
+      text: "## Overview\n\nThis is **bold** and *italic* text with `inline code`.\n\n- First item\n- Second item\n\n> A blockquote",
+    },
+  },
+};
+
+// =============================================================================
+// Standard Action Definitions for Ink
+// =============================================================================
+
+/**
+ * Standard action definitions for Ink terminal catalogs.
+ */
+export const standardActionDefinitions = {
+  setState: {
+    params: z.object({
+      statePath: z.string(),
+      value: z.unknown(),
+    }),
+    description: "Update a value in the state model at the given statePath.",
+  },
+
+  pushState: {
+    params: z.object({
+      statePath: z.string(),
+      value: z.unknown(),
+      clearStatePath: z.string().optional(),
+    }),
+    description:
+      'Append an item to an array in the state model. The value can contain { $state: "/statePath" } references and "$id" for auto IDs. Use clearStatePath to reset another path after pushing.',
+  },
+
+  removeState: {
+    params: z.object({
+      statePath: z.string(),
+      index: z.number(),
+    }),
+    description:
+      "Remove an item from an array in the state model at the given index.",
+  },
+
+  exit: {
+    params: z.object({
+      code: z.number().optional(),
+    }),
+    description:
+      "Exit the terminal application. Optional exit code (default 0).",
+  },
+
+  log: {
+    params: z.object({
+      message: z.string(),
+    }),
+    description:
+      "Write a message to stdout outside the Ink render. Useful for persistent output that should remain visible after the UI updates.",
+  },
+};
+
+// =============================================================================
+// Types
+// =============================================================================
+
+/**
+ * Type for a component definition
+ */
+export type ComponentDefinition = {
+  props: z.ZodType;
+  slots: string[];
+  events?: string[];
+  description: string;
+};
+
+/**
+ * Type for an action definition
+ */
+export type ActionDefinition = {
+  params: z.ZodType;
+  description: string;
+};

packages/ink/src/components/index.ts

@@ -0,0 +1 @@
+export { standardComponents } from "./standard";

packages/ink/src/contexts/actions.tsx

@@ -0,0 +1,419 @@
+import {
+  createContext,
+  useContext,
+  useState,
+  useCallback,
+  useMemo,
+  useRef,
+  type ReactNode,
+} from "react";
+import { Box, Text, useInput } from "ink";
+import {
+  resolveAction,
+  executeAction,
+  type ActionBinding,
+  type ActionHandler,
+  type ActionConfirm,
+  type ResolvedAction,
+} from "@json-render/core";
+import { useStateStore } from "./state";
+import { useFocusDisable } from "./focus";
+
+/**
+ * Generate a unique ID for use with the "$id" token.
+ * Uses crypto.randomUUID when available, otherwise a timestamp + random suffix.
+ * No module-level mutable counter — safe across multiple render trees.
+ */
+function generateUniqueId(): string {
+  if (
+    typeof crypto !== "undefined" &&
+    typeof crypto.randomUUID === "function"
+  ) {
+    return crypto.randomUUID();
+  }
+  return `${Date.now()}-${Math.random().toString(36).slice(2)}`;
+}
+
+const MAX_RESOLVE_DEPTH = 10;
+
+/**
+ * Deep-resolve dynamic value references within an object.
+ *
+ * Supported tokens:
+ * - `{ $state: "/statePath" }` - read a value from state
+ * - `"$id"` (string) or `{ "$id": true }` - generate a unique ID
+ */
+function deepResolveValue(
+  value: unknown,
+  get: (path: string) => unknown,
+  depth = 0,
+): unknown {
+  if (depth > MAX_RESOLVE_DEPTH) return value;
+  if (value === null || value === undefined) return value;
+
+  if (value === "$id") {
+    return generateUniqueId();
+  }
+
+  if (typeof value === "object" && !Array.isArray(value)) {
+    const obj = value as Record<string, unknown>;
+    const keys = Object.keys(obj);
+
+    if (keys.length === 1 && typeof obj.$state === "string") {
+      return get(obj.$state as string);
+    }
+
+    if (keys.length === 1 && "$id" in obj) {
+      return generateUniqueId();
+    }
+
+    const resolved: Record<string, unknown> = {};
+    for (const [key, val] of Object.entries(obj)) {
+      resolved[key] = deepResolveValue(val, get, depth + 1);
+    }
+    return resolved;
+  }
+
+  if (Array.isArray(value)) {
+    return value.map((item) => deepResolveValue(item, get, depth + 1));
+  }
+
+  return value;
+}
+
+/**
+ * Pending confirmation state
+ */
+export interface PendingConfirmation {
+  /** The resolved action */
+  action: ResolvedAction;
+  /** The action handler */
+  handler: ActionHandler;
+  /** Resolve callback */
+  resolve: () => void;
+  /** Reject callback */
+  reject: () => void;
+}
+
+/**
+ * Action context value
+ */
+export interface ActionContextValue {
+  /** Registered action handlers */
+  handlers: Record<string, ActionHandler>;
+  /** Actions currently executing (count of in-flight executions per action name) */
+  loadingActions: Map<string, number>;
+  /** Pending confirmation dialog */
+  pendingConfirmation: PendingConfirmation | null;
+  /** Execute an action binding */
+  execute: (binding: ActionBinding) => Promise<void>;
+  /** Confirm the pending action */
+  confirm: () => void;
+  /** Cancel the pending action */
+  cancel: () => void;
+}
+
+const ActionContext = createContext<ActionContextValue | null>(null);
+
+/**
+ * Props for ActionProvider
+ */
+export interface ActionProviderProps {
+  /** Action handlers (custom handlers override built-in actions) */
+  handlers?: Record<string, ActionHandler>;
+  /** Navigation function */
+  navigate?: (path: string) => void;
+  children: ReactNode;
+}
+
+/**
+ * Provider for action execution
+ */
+export function ActionProvider({
+  handlers: initialHandlers = {},
+  navigate,
+  children,
+}: ActionProviderProps) {
+  const { get, set, getSnapshot } = useStateStore();
+  // Ref always holds the latest prop-based handlers (avoids stale closures
+  // when createRenderer creates a new Proxy each render).
+  const initialHandlersRef = useRef(initialHandlers);
+  initialHandlersRef.current = initialHandlers;
+  const navigateRef = useRef(navigate);
+  navigateRef.current = navigate;
+  const [loadingActions, setLoadingActions] = useState<Map<string, number>>(
+    new Map(),
+  );
+  const [pendingConfirmation, setPendingConfirmation] =
+    useState<PendingConfirmation | null>(null);
+  // Ref tracks current pending confirmation so overlapping confirms can
+  // auto-reject the previous one without a stale closure.
+  const pendingRef = useRef<PendingConfirmation | null>(null);
+
+  const lookupHandler = useCallback(
+    (name: string): ActionHandler | undefined =>
+      initialHandlersRef.current[name],
+    [],
+  );
+
+  const execute = useCallback(
+    async (binding: ActionBinding) => {
+      const resolved = resolveAction(binding, getSnapshot());
+
+      // Check for custom handler override first — allows consumers to override
+      // built-in actions like setState, pushState, etc.
+      const customHandler = lookupHandler(resolved.action);
+
+      // Built-in: setState (overridable)
+      if (resolved.action === "setState" && !customHandler && resolved.params) {
+        const statePath = resolved.params.statePath as string;
+        const value = resolved.params.value;
+        if (statePath) {
+          set(statePath, value);
+        }
+        return;
+      }
+
+      // Built-in: pushState (overridable)
+      if (
+        resolved.action === "pushState" &&
+        !customHandler &&
+        resolved.params
+      ) {
+        const statePath = resolved.params.statePath as string;
+        const rawValue = resolved.params.value;
+        if (statePath) {
+          const resolvedValue = deepResolveValue(rawValue, get);
+          const raw = get(statePath);
+          const arr = Array.isArray(raw) ? raw : [];
+          set(statePath, [...arr, resolvedValue]);
+          const clearStatePath = resolved.params.clearStatePath as
+            | string
+            | undefined;
+          if (clearStatePath) {
+            set(clearStatePath, "");
+          }
+        }
+        return;
+      }
+
+      // Built-in: removeState (overridable)
+      if (
+        resolved.action === "removeState" &&
+        !customHandler &&
+        resolved.params
+      ) {
+        const statePath = resolved.params.statePath as string;
+        const index = resolved.params.index as number;
+        if (statePath !== undefined && index !== undefined) {
+          const raw = get(statePath);
+          if (!Array.isArray(raw)) return;
+          set(
+            statePath,
+            raw.filter((_, i) => i !== index),
+          );
+        }
+        return;
+      }
+
+      // Built-in: log (overridable)
+      if (resolved.action === "log" && !customHandler) {
+        const message =
+          resolved.params?.message ?? resolved.params?.value ?? "";
+        console.log("[json-render]", message);
+        return;
+      }
+
+      // Built-in: exit (always delegates to handler if available)
+      if (resolved.action === "exit" && !customHandler) {
+        // No-op when no handler is provided
+        return;
+      }
+
+      const handler = customHandler;
+
+      if (!handler) {
+        console.warn(
+          `[json-render] No handler registered for action: ${resolved.action}`,
+        );
+        return;
+      }
+
+      // If confirmation is required, show dialog and wait for user response.
+      // Uses resolve(boolean) instead of reject() to avoid unhandled rejections.
+      if (resolved.confirm) {
+        // Auto-reject any existing pending confirmation so its promise resolves
+        // (prevents orphaned promises when a second confirm fires).
+        pendingRef.current?.reject();
+
+        const confirmed = await new Promise<boolean>((res) => {
+          const entry: PendingConfirmation = {
+            action: resolved,
+            handler,
+            resolve: () => {
+              pendingRef.current = null;
+              setPendingConfirmation(null);
+              res(true);
+            },
+            reject: () => {
+              pendingRef.current = null;
+              setPendingConfirmation(null);
+              res(false);
+            },
+          };
+          pendingRef.current = entry;
+          setPendingConfirmation(entry);
+        });
+
+        if (!confirmed) return;
+      }
+
+      const actionName = resolved.action;
+      setLoadingActions((prev) => {
+        const next = new Map(prev);
+        next.set(actionName, (next.get(actionName) ?? 0) + 1);
+        return next;
+      });
+      try {
+        await executeAction({
+          action: resolved,
+          handler,
+          setState: set,
+          navigate: navigateRef.current,
+          executeAction: async (name) => {
+            const subBinding: ActionBinding = { action: name };
+            await execute(subBinding);
+          },
+        });
+      } finally {
+        setLoadingActions((prev) => {
+          const next = new Map(prev);
+          const count = (next.get(actionName) ?? 1) - 1;
+          if (count <= 0) {
+            next.delete(actionName);
+          } else {
+            next.set(actionName, count);
+          }
+          return next;
+        });
+      }
+    },
+    [lookupHandler, get, set, getSnapshot],
+  );
+
+  // Use pendingRef for confirm/cancel to avoid stale closure issues
+  const confirm = useCallback(() => {
+    pendingRef.current?.resolve();
+  }, []);
+
+  const cancel = useCallback(() => {
+    pendingRef.current?.reject();
+  }, []);
+
+  const value = useMemo<ActionContextValue>(
+    () => ({
+      handlers: initialHandlers,
+      loadingActions,
+      pendingConfirmation,
+      execute,
+      confirm,
+      cancel,
+    }),
+    [
+      initialHandlers,
+      loadingActions,
+      pendingConfirmation,
+      execute,
+      confirm,
+      cancel,
+    ],
+  );
+
+  return (
+    <ActionContext.Provider value={value}>{children}</ActionContext.Provider>
+  );
+}
+
+/**
+ * Hook to access action context
+ */
+export function useActions(): ActionContextValue {
+  const ctx = useContext(ActionContext);
+  if (!ctx) {
+    throw new Error("useActions must be used within an ActionProvider");
+  }
+  return ctx;
+}
+
+/**
+ * Hook for a single action binding — returns execute and loading state.
+ */
+export function useAction(binding: ActionBinding): {
+  execute: () => Promise<void>;
+  isLoading: boolean;
+} {
+  const { execute, loadingActions } = useActions();
+  const executeAction = useCallback(() => execute(binding), [execute, binding]);
+  const isLoading = (loadingActions.get(binding.action) ?? 0) > 0;
+  return { execute: executeAction, isLoading };
+}
+
+/**
+ * Props for ConfirmDialog component
+ */
+export interface ConfirmDialogProps {
+  /** The confirmation config */
+  confirm: ActionConfirm;
+  /** Called when confirmed */
+  onConfirm: () => void;
+  /** Called when cancelled */
+  onCancel: () => void;
+}
+
+/**
+ * Terminal confirmation dialog using Ink's Box/Text and useInput.
+ * Press Y to confirm, N or Escape to cancel.
+ */
+export function ConfirmDialog({
+  confirm,
+  onConfirm,
+  onCancel,
+}: ConfirmDialogProps) {
+  const isDanger = confirm.variant === "danger";
+
+  // Suppress Tab cycling while modal is open
+  useFocusDisable(true);
+
+  // ConfirmDialog always captures input when mounted (it's modal)
+  useInput((input, key) => {
+    if (input.toLowerCase() === "y") {
+      onConfirm();
+    } else if (input.toLowerCase() === "n" || key.escape) {
+      onCancel();
+    }
+  });
+
+  return (
+    <Box
+      flexDirection="column"
+      borderStyle="round"
+      borderColor={isDanger ? "red" : "blue"}
+      paddingX={2}
+      paddingY={1}
+    >
+      <Text bold>{confirm.title}</Text>
+      <Text dimColor>{confirm.message}</Text>
+      <Box marginTop={1} gap={2}>
+        <Text>
+          <Text color={isDanger ? "red" : "green"} bold>
+            [Y]
+          </Text>{" "}
+          {confirm.confirmLabel ?? "Confirm"}
+        </Text>
+        <Text>
+          <Text bold>[N]</Text> {confirm.cancelLabel ?? "Cancel"}
+        </Text>
+      </Box>
+    </Box>
+  );
+}

packages/ink/src/contexts/focus.tsx

@@ -0,0 +1,168 @@
+import React, {
+  createContext,
+  useCallback,
+  useContext,
+  useEffect,
+  useId,
+  useMemo,
+  useReducer,
+  useState,
+} from "react";
+import { useInput } from "ink";
+
+// =============================================================================
+// Focus context — tracks which interactive component receives keyboard input.
+// Tab/Shift+Tab cycles focus. useInput's `isActive` gates input delivery.
+// =============================================================================
+
+interface FocusContextValue {
+  /** Register an interactive component by ID. */
+  register: (id: string) => void;
+  /** Unregister when unmounting. */
+  unregister: (id: string) => void;
+  /** The currently focused component's ID (or null). */
+  focusedId: string | null;
+  /** Check if a given ID is the focused component. */
+  isFocused: (id: string) => boolean;
+  /** Suppress Tab cycling (e.g. during modal dialogs). */
+  setDisabled: (disabled: boolean) => void;
+}
+
+const FocusContext = createContext<FocusContextValue | null>(null);
+
+// Reducer state combines ids and focusedId for atomic updates.
+interface FocusState {
+  ids: string[];
+  focusedId: string | null;
+}
+
+type FocusAction =
+  | { type: "register"; id: string }
+  | { type: "unregister"; id: string }
+  | { type: "cycle"; direction: "next" | "prev" };
+
+function focusReducer(state: FocusState, action: FocusAction): FocusState {
+  switch (action.type) {
+    case "register": {
+      if (state.ids.includes(action.id)) return state;
+      const ids = [...state.ids, action.id];
+      // Auto-focus if first interactive component
+      const focusedId = state.focusedId ?? action.id;
+      return { ids, focusedId };
+    }
+    case "unregister": {
+      const ids = state.ids.filter((x) => x !== action.id);
+      let focusedId = state.focusedId;
+      if (focusedId === action.id) {
+        // Move focus to first remaining element, or null
+        focusedId = ids[0] ?? null;
+      }
+      return { ids, focusedId };
+    }
+    case "cycle": {
+      const { ids, focusedId } = state;
+      if (ids.length === 0) return { ...state, focusedId: null };
+      const idx = focusedId ? ids.indexOf(focusedId) : -1;
+      const next =
+        action.direction === "next"
+          ? ids[(idx + 1) % ids.length]!
+          : ids[(idx - 1 + ids.length) % ids.length]!;
+      return { ...state, focusedId: next };
+    }
+  }
+}
+
+export function FocusProvider({ children }: { children: React.ReactNode }) {
+  const [state, dispatch] = useReducer(focusReducer, {
+    ids: [],
+    focusedId: null,
+  });
+  const [disableCount, setDisableCount] = useState(0);
+  const disabled = disableCount > 0;
+
+  // Counter-based disable: multiple concurrent callers (e.g. nested modals)
+  // each increment on mount and decrement on unmount. Focus is only re-enabled
+  // when all callers have released.
+  const setDisabled = useCallback((value: boolean) => {
+    setDisableCount((prev) => (value ? prev + 1 : Math.max(0, prev - 1)));
+  }, []);
+
+  const register = useCallback(
+    (id: string) => dispatch({ type: "register", id }),
+    [],
+  );
+
+  const unregister = useCallback(
+    (id: string) => dispatch({ type: "unregister", id }),
+    [],
+  );
+
+  // When disabled (e.g. modal dialog open), all components report isActive=false
+  // so their useInput({ isActive }) stops processing keystrokes.
+  const isFocused = useCallback(
+    (id: string) => !disabled && state.focusedId === id,
+    [state.focusedId, disabled],
+  );
+
+  // Tab / Shift+Tab to cycle focus (suppressed when disabled, e.g. during modals)
+  useInput((_input, key) => {
+    if (disabled) return;
+    if (!key.tab) return;
+    dispatch({ type: "cycle", direction: key.shift ? "prev" : "next" });
+  });
+
+  const value = useMemo(
+    () => ({
+      register,
+      unregister,
+      focusedId: state.focusedId,
+      isFocused,
+      setDisabled,
+    }),
+    [register, unregister, state.focusedId, isFocused, setDisabled],
+  );
+
+  return (
+    <FocusContext.Provider value={value}>{children}</FocusContext.Provider>
+  );
+}
+
+/**
+ * Hook for interactive components. Registers on mount via useEffect,
+ * unregisters on unmount. Returns `isActive` boolean for gating `useInput`.
+ *
+ * Uses React.useId() for stable, instance-scoped IDs (no module-level counters).
+ */
+export function useFocus(): { isActive: boolean; id: string } {
+  const ctx = useContext(FocusContext);
+  const id = useId();
+
+  useEffect(() => {
+    ctx?.register(id);
+    return () => {
+      ctx?.unregister(id);
+    };
+  }, [ctx, id]);
+
+  const isActive = ctx?.isFocused(id) ?? false;
+  return { isActive, id };
+}
+
+/**
+ * Hook to suppress/restore Tab cycling.
+ * Used by modal dialogs (e.g. ConfirmDialog) to prevent background focus changes.
+ *
+ * Tracks the disabled value at effect time via a ref to avoid double-decrement
+ * when the `disabled` prop toggles from true to false.
+ */
+export function useFocusDisable(disabled: boolean): void {
+  const ctx = useContext(FocusContext);
+
+  useEffect(() => {
+    if (!disabled) return;
+    ctx?.setDisabled(true);
+    return () => {
+      ctx?.setDisabled(false);
+    };
+  }, [ctx, disabled]);
+}

packages/ink/src/contexts/repeat-scope.tsx

@@ -0,0 +1,42 @@
+import { createContext, useContext, useMemo, type ReactNode } from "react";
+
+/**
+ * Repeat scope value provided to child elements inside a repeated element.
+ */
+export interface RepeatScopeValue {
+  /** The current array item object */
+  item: unknown;
+  /** Index of the current item in the array */
+  index: number;
+  /** Absolute state path to the current array item (e.g. "/todos/0") — used for statePath two-way binding */
+  basePath: string;
+}
+
+const RepeatScopeContext = createContext<RepeatScopeValue | null>(null);
+
+/**
+ * Provides repeat scope to child elements so $item and $index expressions resolve correctly.
+ */
+export function RepeatScopeProvider({
+  item,
+  index,
+  basePath,
+  children,
+}: RepeatScopeValue & { children: ReactNode }) {
+  const value = useMemo(
+    () => ({ item, index, basePath }),
+    [item, index, basePath],
+  );
+  return (
+    <RepeatScopeContext.Provider value={value}>
+      {children}
+    </RepeatScopeContext.Provider>
+  );
+}
+
+/**
+ * Read the current repeat scope (or null if not inside a repeated element).
+ */
+export function useRepeatScope(): RepeatScopeValue | null {
+  return useContext(RepeatScopeContext);
+}

packages/ink/src/contexts/state.test.tsx

@@ -0,0 +1,49 @@
+import { describe, it, expect } from "vitest";
+import React from "react";
+import { renderHook, act } from "@testing-library/react";
+import {
+  StateProvider,
+  useStateStore,
+  useStateValue,
+  useStateBinding,
+} from "./state";
+
+describe("state re-exports (smoke test)", () => {
+  it("StateProvider + useStateStore round-trip", () => {
+    const wrapper = ({ children }: { children: React.ReactNode }) => (
+      <StateProvider initialState={{ count: 0 }}>{children}</StateProvider>
+    );
+
+    const { result } = renderHook(() => useStateStore(), { wrapper });
+
+    expect(result.current.get("/count")).toBe(0);
+
+    act(() => {
+      result.current.set("/count", 42);
+    });
+
+    expect(result.current.state.count).toBe(42);
+  });
+
+  it("useStateValue reads from state", () => {
+    const wrapper = ({ children }: { children: React.ReactNode }) => (
+      <StateProvider initialState={{ name: "Alice" }}>{children}</StateProvider>
+    );
+
+    const { result } = renderHook(() => useStateValue("/name"), { wrapper });
+
+    expect(result.current).toBe("Alice");
+  });
+
+  it("useStateBinding returns value and setter", () => {
+    const wrapper = ({ children }: { children: React.ReactNode }) => (
+      <StateProvider initialState={{ x: 1 }}>{children}</StateProvider>
+    );
+
+    const { result } = renderHook(() => useStateBinding("/x"), { wrapper });
+
+    const [value, setValue] = result.current;
+    expect(value).toBe(1);
+    expect(typeof setValue).toBe("function");
+  });
+});

packages/ink/src/contexts/state.tsx

@@ -0,0 +1,8 @@
+export {
+  StateProvider,
+  useStateStore,
+  useStateValue,
+  useStateBinding,
+  type StateContextValue,
+  type StateProviderProps,
+} from "@internal/react-state";

packages/ink/src/contexts/validation.tsx

@@ -0,0 +1,332 @@
+import {
+  createContext,
+  useContext,
+  useState,
+  useCallback,
+  useEffect,
+  useMemo,
+  type ReactNode,
+} from "react";
+import {
+  runValidation,
+  type ValidationConfig,
+  type ValidationFunction,
+  type ValidationResult,
+} from "@json-render/core";
+import { useStateStore } from "./state";
+
+/**
+ * Field validation state
+ */
+export interface FieldValidationState {
+  /** Whether the field has been touched */
+  touched: boolean;
+  /** Whether the field has been validated */
+  validated: boolean;
+  /** Validation result */
+  result: ValidationResult | null;
+}
+
+/**
+ * Validation context value
+ */
+export interface ValidationContextValue {
+  /** Custom validation functions from catalog */
+  customFunctions: Record<string, ValidationFunction>;
+  /** Validation state by field path */
+  fieldStates: Record<string, FieldValidationState>;
+  /** Validate a field */
+  validate: (path: string, config: ValidationConfig) => ValidationResult;
+  /** Mark field as touched */
+  touch: (path: string) => void;
+  /** Clear validation for a field */
+  clear: (path: string) => void;
+  /** Validate all fields */
+  validateAll: () => boolean;
+  /** Register field config */
+  registerField: (path: string, config: ValidationConfig) => void;
+  /** Unregister field (removes from validateAll and clears state) */
+  unregisterField: (path: string) => void;
+}
+
+const ValidationContext = createContext<ValidationContextValue | null>(null);
+
+/**
+ * Props for ValidationProvider
+ */
+export interface ValidationProviderProps {
+  /** Custom validation functions from catalog */
+  customFunctions?: Record<string, ValidationFunction>;
+  children: ReactNode;
+}
+
+/**
+ * Compare two DynamicValue args records shallowly.
+ */
+function dynamicArgsEqual(
+  a: Record<string, unknown> | undefined,
+  b: Record<string, unknown> | undefined,
+): boolean {
+  if (a === b) return true;
+  if (!a || !b) return false;
+
+  const keysA = Object.keys(a);
+  const keysB = Object.keys(b);
+  if (keysA.length !== keysB.length) return false;
+
+  for (const key of keysA) {
+    const va = a[key];
+    const vb = b[key];
+    if (va === vb) continue;
+    if (
+      typeof va === "object" &&
+      va !== null &&
+      typeof vb === "object" &&
+      vb !== null
+    ) {
+      const sa = (va as Record<string, unknown>).$state;
+      const sb = (vb as Record<string, unknown>).$state;
+      if (typeof sa === "string" && sa === sb) continue;
+    }
+    return false;
+  }
+  return true;
+}
+
+/**
+ * Structural equality check for ValidationConfig.
+ */
+function validationConfigEqual(
+  a: ValidationConfig,
+  b: ValidationConfig,
+): boolean {
+  if (a === b) return true;
+  if (a.validateOn !== b.validateOn) return false;
+
+  const ac = a.checks ?? [];
+  const bc = b.checks ?? [];
+  if (ac.length !== bc.length) return false;
+
+  for (let i = 0; i < ac.length; i++) {
+    const ca = ac[i]!;
+    const cb = bc[i]!;
+    if (ca.type !== cb.type) return false;
+    if (ca.message !== cb.message) return false;
+    if (!dynamicArgsEqual(ca.args, cb.args)) return false;
+  }
+
+  return true;
+}
+
+/**
+ * Provider for validation
+ */
+export function ValidationProvider({
+  customFunctions = {},
+  children,
+}: ValidationProviderProps) {
+  const { getSnapshot } = useStateStore();
+  const [fieldStates, setFieldStates] = useState<
+    Record<string, FieldValidationState>
+  >({});
+  const [fieldConfigs, setFieldConfigs] = useState<
+    Record<string, ValidationConfig>
+  >({});
+
+  const registerField = useCallback(
+    (path: string, config: ValidationConfig) => {
+      setFieldConfigs((prev) => {
+        const existing = prev[path];
+        if (existing && validationConfigEqual(existing, config)) {
+          return prev;
+        }
+        return { ...prev, [path]: config };
+      });
+    },
+    [],
+  );
+
+  const unregisterField = useCallback((path: string) => {
+    setFieldConfigs((prev) => {
+      const { [path]: _, ...rest } = prev;
+      return rest;
+    });
+    setFieldStates((prev) => {
+      const { [path]: _, ...rest } = prev;
+      return rest;
+    });
+  }, []);
+
+  const validate = useCallback(
+    (path: string, config: ValidationConfig): ValidationResult => {
+      const currentState = getSnapshot();
+      const segments = path.split("/").filter(Boolean);
+      let value: unknown = currentState;
+      for (const seg of segments) {
+        if (value != null && typeof value === "object") {
+          value = (value as Record<string, unknown>)[seg];
+        } else {
+          value = undefined;
+          break;
+        }
+      }
+      const result = runValidation(config, {
+        value,
+        stateModel: currentState,
+        customFunctions,
+      });
+
+      setFieldStates((prev) => ({
+        ...prev,
+        [path]: {
+          touched: prev[path]?.touched ?? true,
+          validated: true,
+          result,
+        },
+      }));
+
+      return result;
+    },
+    [getSnapshot, customFunctions],
+  );
+
+  const touch = useCallback((path: string) => {
+    setFieldStates((prev) => ({
+      ...prev,
+      [path]: {
+        ...prev[path],
+        touched: true,
+        validated: prev[path]?.validated ?? false,
+        result: prev[path]?.result ?? null,
+      },
+    }));
+  }, []);
+
+  const clear = useCallback((path: string) => {
+    setFieldStates((prev) => {
+      const { [path]: _, ...rest } = prev;
+      return rest;
+    });
+  }, []);
+
+  const validateAll = useCallback(() => {
+    let allValid = true;
+    for (const [path, config] of Object.entries(fieldConfigs)) {
+      const result = validate(path, config);
+      if (!result.valid) {
+        allValid = false;
+      }
+    }
+    return allValid;
+  }, [fieldConfigs, validate]);
+
+  const value = useMemo<ValidationContextValue>(
+    () => ({
+      customFunctions,
+      fieldStates,
+      validate,
+      touch,
+      clear,
+      validateAll,
+      registerField,
+      unregisterField,
+    }),
+    [
+      customFunctions,
+      fieldStates,
+      validate,
+      touch,
+      clear,
+      validateAll,
+      registerField,
+      unregisterField,
+    ],
+  );
+
+  return (
+    <ValidationContext.Provider value={value}>
+      {children}
+    </ValidationContext.Provider>
+  );
+}
+
+/**
+ * Hook to access validation context
+ */
+export function useValidation(): ValidationContextValue {
+  const ctx = useContext(ValidationContext);
+  if (!ctx) {
+    throw new Error("useValidation must be used within a ValidationProvider");
+  }
+  return ctx;
+}
+
+/**
+ * Hook to optionally access validation context (returns null if outside provider).
+ */
+export function useOptionalValidation(): ValidationContextValue | null {
+  return useContext(ValidationContext);
+}
+
+/**
+ * Hook to get validation state for a field
+ */
+export function useFieldValidation(
+  path: string,
+  config?: ValidationConfig,
+): {
+  state: FieldValidationState;
+  validate: () => ValidationResult;
+  touch: () => void;
+  clear: () => void;
+  errors: string[];
+  isValid: boolean;
+} {
+  const {
+    fieldStates,
+    validate: validateField,
+    touch: touchField,
+    clear: clearField,
+    registerField,
+    unregisterField,
+  } = useValidation();
+
+  // Register whenever config changes (registerField deduplicates via structural equality)
+  useEffect(() => {
+    if (config) {
+      registerField(path, config);
+    }
+  }, [path, config, registerField]);
+
+  // Unregister only on true unmount — avoids clearing validation state
+  // when config identity changes (e.g. inline objects re-created each render)
+  useEffect(() => {
+    return () => {
+      unregisterField(path);
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [path]);
+
+  const state = fieldStates[path] ?? {
+    touched: false,
+    validated: false,
+    result: null,
+  };
+
+  const validate = useCallback(
+    () => validateField(path, config ?? { checks: [] }),
+    [path, config, validateField],
+  );
+
+  const touch = useCallback(() => touchField(path), [path, touchField]);
+  const clear = useCallback(() => clearField(path), [path, clearField]);
+
+  return {
+    state,
+    validate,
+    touch,
+    clear,
+    errors: state.result?.errors ?? [],
+    isValid: state.result?.valid ?? true,
+  };
+}

packages/ink/src/contexts/visibility.test.tsx

@@ -0,0 +1,93 @@
+import { describe, it, expect } from "vitest";
+import React from "react";
+import { renderHook } from "@testing-library/react";
+import { VisibilityProvider, useVisibility, useIsVisible } from "./visibility";
+import { StateProvider } from "./state";
+
+const createWrapper =
+  (data: Record<string, unknown> = {}) =>
+  ({ children }: { children: React.ReactNode }) => (
+    <StateProvider initialState={data}>
+      <VisibilityProvider>{children}</VisibilityProvider>
+    </StateProvider>
+  );
+
+describe("useVisibility", () => {
+  it("provides isVisible function", () => {
+    const { result } = renderHook(() => useVisibility(), {
+      wrapper: createWrapper(),
+    });
+
+    expect(typeof result.current.isVisible).toBe("function");
+  });
+
+  it("provides visibility context", () => {
+    const { result } = renderHook(() => useVisibility(), {
+      wrapper: createWrapper({ test: true }),
+    });
+
+    expect(result.current.ctx.stateModel).toEqual({ test: true });
+  });
+});
+
+describe("useIsVisible", () => {
+  it("returns true for undefined condition", () => {
+    const { result } = renderHook(() => useIsVisible(undefined), {
+      wrapper: createWrapper(),
+    });
+
+    expect(result.current).toBe(true);
+  });
+
+  it("returns true for true condition", () => {
+    const { result } = renderHook(() => useIsVisible(true), {
+      wrapper: createWrapper(),
+    });
+
+    expect(result.current).toBe(true);
+  });
+
+  it("returns false for false condition", () => {
+    const { result } = renderHook(() => useIsVisible(false), {
+      wrapper: createWrapper(),
+    });
+
+    expect(result.current).toBe(false);
+  });
+
+  it("evaluates $state conditions against data", () => {
+    const { result: trueResult } = renderHook(
+      () => useIsVisible({ $state: "/isVisible" }),
+      { wrapper: createWrapper({ isVisible: true }) },
+    );
+    expect(trueResult.current).toBe(true);
+
+    const { result: falseResult } = renderHook(
+      () => useIsVisible({ $state: "/isVisible" }),
+      { wrapper: createWrapper({ isVisible: false }) },
+    );
+    expect(falseResult.current).toBe(false);
+  });
+
+  it("evaluates equality conditions", () => {
+    const { result } = renderHook(
+      () => useIsVisible({ $state: "/count", eq: 1 }),
+      { wrapper: createWrapper({ count: 1 }) },
+    );
+
+    expect(result.current).toBe(true);
+  });
+
+  it("evaluates array conditions (implicit AND)", () => {
+    const { result } = renderHook(
+      () =>
+        useIsVisible([
+          { $state: "/user/isAdmin" },
+          { $state: "/count", eq: 5 },
+        ]),
+      { wrapper: createWrapper({ user: { isAdmin: true }, count: 5 }) },
+    );
+
+    expect(result.current).toBe(true);
+  });
+});

packages/ink/src/contexts/visibility.tsx

@@ -0,0 +1,83 @@
+import React, {
+  createContext,
+  useContext,
+  useMemo,
+  type ReactNode,
+} from "react";
+import {
+  evaluateVisibility,
+  type VisibilityCondition,
+  type VisibilityContext as CoreVisibilityContext,
+} from "@json-render/core";
+import { useStateStore } from "./state";
+
+/**
+ * Visibility context value
+ */
+export interface VisibilityContextValue {
+  /** Evaluate a visibility condition */
+  isVisible: (condition: VisibilityCondition | undefined) => boolean;
+  /** The underlying visibility context */
+  ctx: CoreVisibilityContext;
+}
+
+const VisibilityContext = createContext<VisibilityContextValue | null>(null);
+
+/**
+ * Props for VisibilityProvider
+ */
+export interface VisibilityProviderProps {
+  children: ReactNode;
+}
+
+/**
+ * Provider for visibility evaluation
+ */
+export function VisibilityProvider({ children }: VisibilityProviderProps) {
+  const { state } = useStateStore();
+
+  const ctx: CoreVisibilityContext = useMemo(
+    () => ({
+      stateModel: state,
+    }),
+    [state],
+  );
+
+  const isVisible = useMemo(
+    () => (condition: VisibilityCondition | undefined) =>
+      evaluateVisibility(condition, ctx),
+    [ctx],
+  );
+
+  const value = useMemo<VisibilityContextValue>(
+    () => ({ isVisible, ctx }),
+    [isVisible, ctx],
+  );
+
+  return (
+    <VisibilityContext.Provider value={value}>
+      {children}
+    </VisibilityContext.Provider>
+  );
+}
+
+/**
+ * Hook to access visibility evaluation
+ */
+export function useVisibility(): VisibilityContextValue {
+  const ctx = useContext(VisibilityContext);
+  if (!ctx) {
+    throw new Error("useVisibility must be used within a VisibilityProvider");
+  }
+  return ctx;
+}
+
+/**
+ * Hook to check if a condition is visible
+ */
+export function useIsVisible(
+  condition: VisibilityCondition | undefined,
+): boolean {
+  const { isVisible } = useVisibility();
+  return isVisible(condition);
+}

packages/ink/src/hooks.test.ts

@@ -0,0 +1,134 @@
+import { describe, it, expect } from "vitest";
+import { flatToTree } from "./hooks";
+
+describe("flatToTree", () => {
+  it("converts array of elements to tree structure", () => {
+    const elements = [
+      { key: "container", type: "Box", props: {}, parentKey: null },
+      {
+        key: "text1",
+        type: "Text",
+        props: { text: "Hello" },
+        parentKey: "container",
+      },
+      {
+        key: "text2",
+        type: "Text",
+        props: { text: "World" },
+        parentKey: "container",
+      },
+    ];
+
+    const tree = flatToTree(elements);
+
+    expect(tree.root).toBe("container");
+    expect(Object.keys(tree.elements)).toHaveLength(3);
+    expect(tree.elements["container"]).toBeDefined();
+    expect(tree.elements["text1"]).toBeDefined();
+    expect(tree.elements["text2"]).toBeDefined();
+  });
+
+  it("builds parent-child relationships", () => {
+    const elements = [
+      { key: "root", type: "Box", props: {}, parentKey: null },
+      { key: "child1", type: "Text", props: {}, parentKey: "root" },
+      { key: "child2", type: "Text", props: {}, parentKey: "root" },
+    ];
+
+    const tree = flatToTree(elements);
+
+    expect(tree.elements["root"]!.children).toHaveLength(2);
+    expect(tree.elements["root"]!.children).toContain("child1");
+    expect(tree.elements["root"]!.children).toContain("child2");
+  });
+
+  it("handles single root element", () => {
+    const elements = [
+      {
+        key: "only",
+        type: "Text",
+        props: { text: "Single" },
+        parentKey: null,
+      },
+    ];
+
+    const tree = flatToTree(elements);
+
+    expect(tree.root).toBe("only");
+    expect(Object.keys(tree.elements)).toHaveLength(1);
+  });
+
+  it("handles deeply nested elements", () => {
+    const elements = [
+      { key: "level0", type: "Box", props: {}, parentKey: null },
+      { key: "level1", type: "Box", props: {}, parentKey: "level0" },
+      { key: "level2", type: "Box", props: {}, parentKey: "level1" },
+      { key: "level3", type: "Text", props: {}, parentKey: "level2" },
+    ];
+
+    const tree = flatToTree(elements);
+
+    expect(tree.root).toBe("level0");
+    expect(tree.elements["level0"]!.children).toContain("level1");
+    expect(tree.elements["level1"]!.children).toContain("level2");
+    expect(tree.elements["level2"]!.children).toContain("level3");
+  });
+
+  it("preserves element props", () => {
+    const elements = [
+      {
+        key: "heading",
+        type: "Heading",
+        props: { text: "Dashboard", level: "h1" },
+        parentKey: null,
+      },
+    ];
+
+    const tree = flatToTree(elements);
+
+    expect(tree.elements["heading"]!.props).toEqual({
+      text: "Dashboard",
+      level: "h1",
+    });
+  });
+
+  it("preserves visibility conditions", () => {
+    const elements = [
+      {
+        key: "conditional",
+        type: "Text",
+        props: {},
+        parentKey: null,
+        visible: { $state: "/isVisible" },
+      },
+    ];
+
+    const tree = flatToTree(elements);
+
+    expect(tree.elements["conditional"]!.visible).toEqual({
+      $state: "/isVisible",
+    });
+  });
+
+  it("handles empty elements array", () => {
+    const tree = flatToTree([]);
+
+    expect(tree.root).toBe("");
+    expect(Object.keys(tree.elements)).toHaveLength(0);
+  });
+
+  it("handles multiple children correctly", () => {
+    const elements = [
+      { key: "parent", type: "Box", props: {}, parentKey: null },
+      { key: "a", type: "Card", props: {}, parentKey: "parent" },
+      { key: "b", type: "Card", props: {}, parentKey: "parent" },
+      { key: "c", type: "Card", props: {}, parentKey: "parent" },
+      { key: "d", type: "Card", props: {}, parentKey: "parent" },
+    ];
+
+    const tree = flatToTree(elements);
+
+    expect(tree.elements["parent"]!.children).toHaveLength(4);
+    expect(tree.elements["parent"]!.children).toEqual(["a", "b", "c", "d"]);
+  });
+});

packages/ink/src/hooks.ts

@@ -0,0 +1,547 @@
+import { useState, useCallback, useRef, useEffect } from "react";
+import type {
+  Spec,
+  UIElement,
+  FlatElement,
+  SpecStreamLine,
+} from "@json-render/core";
+import {
+  applySpecPatch,
+  validateSpec,
+  autoFixSpec,
+  formatSpecIssues,
+} from "@json-render/core";
+import { useStateStore } from "./contexts/state";
+
+// =============================================================================
+// useBoundProp — Two-way binding helper for $bindState/$bindItem expressions
+// =============================================================================
+
+/**
+ * Hook for two-way bound props. Returns `[value, setValue]` where:
+ *
+ * - `value` is the already-resolved prop value (passed through from render props)
+ * - `setValue` writes back to the bound state path (no-op if not bound)
+ *
+ * @example
+ * ```tsx
+ * const [value, setValue] = useBoundProp<string>(element.props.value, bindings?.value);
+ * ```
+ */
+export function useBoundProp<T>(
+  propValue: T | undefined,
+  bindingPath: string | undefined,
+): [T | undefined, (value: T) => void] {
+  const { set } = useStateStore();
+  const setValue = useCallback(
+    (value: T) => {
+      if (bindingPath) set(bindingPath, value);
+    },
+    [bindingPath, set],
+  );
+  return [propValue, setValue];
+}
+
+/**
+ * Result of attempting to parse a JSONL line.
+ * - `patch`: successfully parsed patch (or null)
+ * - `malformed`: true only if the line looked like JSON (starts with `{`)
+ *   but could not be parsed. Plain text commentary is NOT malformed.
+ */
+interface ParseResult {
+  patch: SpecStreamLine | null;
+  malformed: boolean;
+}
+
+/**
+ * Check if a line looks like it's attempting to be JSON.
+ * LLMs often output commentary text before/between patches — those
+ * lines should be skipped, not treated as malformed.
+ */
+function looksLikeJson(line: string): boolean {
+  return line.startsWith("{") || line.startsWith("[");
+}
+
+/**
+ * Parse a single JSON patch line with LLM-specific recovery.
+ * Wraps core's parseSpecStreamLine with recovery for common LLM errors
+ * like trailing extra braces.
+ *
+ * Returns a ParseResult so the caller can distinguish between:
+ * - Successfully parsed patch
+ * - Commentary text (skip silently)
+ * - Genuinely malformed JSON (trigger retry)
+ */
+function parsePatchLine(line: string): ParseResult {
+  const trimmed = line.trim();
+  if (!trimmed || trimmed.startsWith("//")) {
+    return { patch: null, malformed: false };
+  }
+
+  // If it doesn't look like JSON at all, it's commentary — skip it
+  if (!looksLikeJson(trimmed)) {
+    return { patch: null, malformed: false };
+  }
+
+  // Try parsing as-is first
+  try {
+    const parsed = JSON.parse(trimmed);
+    // Validate it's a patch operation (must have `op` field)
+    if (parsed && typeof parsed === "object" && typeof parsed.op === "string") {
+      return { patch: parsed as SpecStreamLine, malformed: false };
+    }
+    // Valid JSON but not a patch — skip (could be metadata)
+    return { patch: null, malformed: false };
+  } catch {
+    // Fall through to recovery
+  }
+
+  // Recovery: strip trailing extra braces/brackets one at a time
+  // LLMs commonly generate extra closing characters in nested JSON
+  let attempt = trimmed;
+  for (let i = 0; i < 8; i++) {
+    const last = attempt[attempt.length - 1];
+    if (last === "}" || last === "]") {
+      attempt = attempt.slice(0, -1);
+      try {
+        const result = JSON.parse(attempt);
+        // Validate that the parsed result is actually a patch operation
+        if (
+          result &&
+          typeof result === "object" &&
+          typeof result.op === "string"
+        ) {
+          console.warn(
+            `[json-render] Recovered malformed JSONL line by removing ${i + 1} trailing '${last}'`,
+          );
+          return { patch: result as SpecStreamLine, malformed: false };
+        }
+        // Valid JSON but not a patch — treat as malformed
+        return { patch: null, malformed: true };
+      } catch {
+        // Keep stripping
+      }
+    } else {
+      break;
+    }
+  }
+
+  // Looks like JSON but couldn't parse — genuinely malformed
+  return { patch: null, malformed: true };
+}
+
+// =============================================================================
+// Stream result types
+// =============================================================================
+
+/** Result of a single stream request */
+interface StreamResult {
+  /** The spec after applying all successfully parsed patches */
+  spec: Spec;
+  /** Whether the stream completed naturally (vs. being aborted) */
+  completed: boolean;
+  /** Malformed lines that could not be parsed (even after recovery) */
+  malformedLines: string[];
+}
+
+/**
+ * Options for useUIStream
+ */
+export interface UseUIStreamOptions {
+  /** API endpoint */
+  api: string;
+  /** Callback when complete */
+  onComplete?: (spec: Spec) => void;
+  /** Callback on error */
+  onError?: (error: Error) => void;
+  /**
+   * Custom fetch implementation with ReadableStream support.
+   *
+   * Falls back to the global `fetch` if not provided.
+   */
+  fetch?: (url: string, init?: RequestInit) => Promise<Response>;
+  /**
+   * Enable validation and auto-repair.
+   *
+   * When true:
+   * - **Mid-stream**: Each JSONL line is validated as it arrives. If a line
+   *   is malformed JSON (and recovery fails), the stream is aborted
+   *   immediately and a repair prompt is sent to continue generation.
+   * - **Post-stream**: After the stream completes, structural validation
+   *   runs (missing children, visible-in-props, etc.). Issues that can be
+   *   auto-fixed are fixed locally; remaining errors trigger a repair prompt.
+   *
+   * Defaults to false.
+   */
+  validate?: boolean;
+  /**
+   * Maximum number of automatic repair retries (covers both mid-stream
+   * and post-stream retries combined). Defaults to 5.
+   */
+  maxRetries?: number;
+}
+
+/**
+ * Return type for useUIStream
+ */
+export interface UseUIStreamReturn {
+  /** Current UI spec */
+  spec: Spec | null;
+  /** Whether currently streaming */
+  isStreaming: boolean;
+  /** Error if any */
+  error: Error | null;
+  /** Send a prompt to generate UI */
+  send: (prompt: string, context?: Record<string, unknown>) => Promise<void>;
+  /** Stop the current generation */
+  stop: () => void;
+  /** Clear the current spec */
+  clear: () => void;
+}
+
+/**
+ * Hook for streaming UI generation via JSONL patches.
+ *
+ * @example
+ * ```tsx
+ * const { spec, isStreaming, send } = useUIStream({
+ *   api: "/api/generate-ui",
+ *   onComplete: (spec) => console.log("Done!", spec),
+ * });
+ *
+ * // Trigger generation
+ * await send("Create a dashboard with stats");
+ *
+ * // Render the spec
+ * <Renderer spec={spec} loading={isStreaming} />
+ * ```
+ */
+export function useUIStream({
+  api,
+  onComplete,
+  onError,
+  fetch: fetchFn = globalThis.fetch,
+  validate: enableValidation = false,
+  maxRetries = 5,
+}: UseUIStreamOptions): UseUIStreamReturn {
+  const [spec, setSpec] = useState<Spec | null>(null);
+  const [isStreaming, setIsStreaming] = useState(false);
+  const [error, setError] = useState<Error | null>(null);
+  const abortControllerRef = useRef<AbortController | null>(null);
+  // Tracks the current request so only the latest one updates isStreaming.
+  const requestIdRef = useRef(0);
+
+  // Use refs for callbacks to avoid stale closures and unnecessary
+  // re-creation of `send` when consumers pass inline arrow functions.
+  const onCompleteRef = useRef(onComplete);
+  onCompleteRef.current = onComplete;
+  const onErrorRef = useRef(onError);
+  onErrorRef.current = onError;
+
+  const stop = useCallback(() => {
+    abortControllerRef.current?.abort();
+    setIsStreaming(false);
+  }, []);
+
+  const clear = useCallback(() => {
+    setSpec(null);
+    setError(null);
+  }, []);
+
+  /**
+   * Stream a single request. Returns the result including whether the
+   * stream completed and any malformed lines encountered.
+   *
+   * When `abortOnMalformed` is true, the stream is aborted on the first
+   * malformed line so the caller can retry immediately.
+   */
+  const streamRequest = useCallback(
+    async (
+      prompt: string,
+      context: Record<string, unknown> | undefined,
+      initialSpec: Spec,
+      abortOnMalformed: boolean,
+      controller: AbortController,
+    ): Promise<StreamResult> => {
+      let currentSpec = initialSpec;
+      setSpec(currentSpec);
+      const malformedLines: string[] = [];
+
+      const response = await fetchFn(api, {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({
+          prompt,
+          context,
+          currentSpec,
+        }),
+        signal: controller.signal,
+      });
+
+      if (!response.ok) {
+        let errorMessage = `HTTP error: ${response.status}`;
+        try {
+          const errorData = await response.json();
+          if (errorData.message) {
+            errorMessage = errorData.message;
+          } else if (errorData.error) {
+            errorMessage = errorData.error;
+          }
+        } catch {
+          // Ignore JSON parsing errors, use default message
+        }
+        throw new Error(errorMessage);
+      }
+
+      const reader = response.body?.getReader();
+      if (!reader) {
+        throw new Error("No response body");
+      }
+
+      const decoder = new TextDecoder();
+      let buffer = "";
+      let aborted = false;
+
+      while (true) {
+        const { done, value } = await reader.read();
+        if (done) {
+          break;
+        }
+
+        const decoded = decoder.decode(value, { stream: true });
+        buffer += decoded;
+
+        // Process complete lines
+        const lines = buffer.split("\n");
+        buffer = lines.pop() ?? "";
+
+        for (const line of lines) {
+          const { patch, malformed } = parsePatchLine(line);
+          if (patch) {
+            // applySpecPatch mutates in place — deep-clone so React
+            // never sees mutated objects from a previous render.
+            currentSpec = applySpecPatch(structuredClone(currentSpec), patch);
+            setSpec(currentSpec);
+          } else if (malformed) {
+            // Genuinely malformed JSON (started with { but couldn't parse)
+            malformedLines.push(line.trim());
+
+            if (abortOnMalformed) {
+              await reader.cancel();
+              aborted = true;
+              break;
+            }
+          }
+          // else: commentary text — skip silently
+        }
+
+        if (aborted) break;
+      }
+
+      // Process any remaining buffer (only if stream completed naturally)
+      if (!aborted && buffer.trim()) {
+        const { patch, malformed } = parsePatchLine(buffer);
+        if (patch) {
+          currentSpec = applySpecPatch(structuredClone(currentSpec), patch);
+          setSpec(currentSpec);
+        } else if (malformed) {
+          malformedLines.push(buffer.trim());
+        }
+      }
+
+      return { spec: currentSpec, completed: !aborted, malformedLines };
+    },
+    [api, fetchFn],
+  );
+
+  const send = useCallback(
+    async (prompt: string, context?: Record<string, unknown>) => {
+      // Abort any existing request
+      abortControllerRef.current?.abort();
+      const controller = new AbortController();
+      abortControllerRef.current = controller;
+      const thisRequestId = ++requestIdRef.current;
+
+      setIsStreaming(true);
+      setError(null);
+
+      // Start with previous spec if provided, otherwise empty spec
+      const previousSpec = context?.previousSpec as Spec | undefined;
+      let currentSpec: Spec =
+        previousSpec && previousSpec.root
+          ? { ...previousSpec, elements: { ...previousSpec.elements } }
+          : { root: "", elements: {} };
+
+      let retriesUsed = 0;
+      let currentPrompt = prompt;
+      let currentContext = context;
+
+      try {
+        // Retry loop handles both mid-stream (malformed JSON) and
+        // post-stream (structural validation) repairs.
+        while (retriesUsed <= maxRetries) {
+          const result = await streamRequest(
+            currentPrompt,
+            currentContext,
+            currentSpec,
+            enableValidation, // only abort on malformed when validation is on
+            controller,
+          );
+          currentSpec = result.spec;
+
+          // ---------------------------------------------------------------
+          // Mid-stream repair: stream was aborted due to malformed line
+          // ---------------------------------------------------------------
+          if (!result.completed && result.malformedLines.length > 0) {
+            if (retriesUsed >= maxRetries) {
+              break;
+            }
+            retriesUsed++;
+
+            // Build a repair prompt that asks the AI to continue from
+            // the current partial spec
+            currentContext = { ...context, previousSpec: currentSpec };
+            currentPrompt =
+              `The previous generation contained malformed JSON that could not be parsed. The line was:\n` +
+              `${result.malformedLines[result.malformedLines.length - 1]?.slice(0, 500)}\n\n` +
+              `The current spec state is provided. Continue generating from where you left off. ` +
+              `Output ONLY the remaining patches needed to complete the UI.`;
+            continue;
+          }
+
+          // ---------------------------------------------------------------
+          // Post-stream: validation is off or spec is empty → done
+          // ---------------------------------------------------------------
+          if (!enableValidation || !currentSpec.root) {
+            break;
+          }
+
+          // ---------------------------------------------------------------
+          // Post-stream: auto-fix deterministic issues (no retry needed)
+          // ---------------------------------------------------------------
+          const { spec: fixedSpec, fixes } = autoFixSpec(currentSpec);
+          if (fixes.length > 0) {
+            currentSpec = fixedSpec;
+            setSpec({ ...currentSpec });
+          }
+
+          // ---------------------------------------------------------------
+          // Post-stream: structural validation
+          // ---------------------------------------------------------------
+          const validation = validateSpec(currentSpec);
+          if (validation.valid) {
+            break;
+          }
+
+          // Still has errors — check if max retries exhausted
+          if (retriesUsed >= maxRetries) {
+            break;
+          }
+
+          retriesUsed++;
+          const issueText = formatSpecIssues(validation.issues);
+
+          currentContext = { ...context, previousSpec: currentSpec };
+          currentPrompt =
+            `FIX THE FOLLOWING ERRORS in the current UI spec. Output ONLY the patches needed to fix these issues, do not recreate the entire UI.\n\n` +
+            issueText;
+          // continue loop
+        }
+
+        // If retries were exhausted and validation still fails, report error
+        // instead of silently treating partial/invalid specs as complete.
+        if (enableValidation && retriesUsed >= maxRetries && currentSpec.root) {
+          const finalValidation = validateSpec(currentSpec);
+          if (!finalValidation.valid) {
+            const issueText = formatSpecIssues(finalValidation.issues);
+            const validationError = new Error(
+              `Spec validation failed after ${maxRetries} retries:\n${issueText}`,
+            );
+            setError(validationError);
+            onErrorRef.current?.(validationError);
+            return;
+          }
+        }
+
+        onCompleteRef.current?.(currentSpec);
+      } catch (err) {
+        if ((err as Error).name === "AbortError") {
+          return;
+        }
+        const error = err instanceof Error ? err : new Error(String(err));
+        setError(error);
+        onErrorRef.current?.(error);
+      } finally {
+        // Only the latest request updates isStreaming to avoid the race
+        // where an aborted request's finally clears streaming for the active one.
+        if (requestIdRef.current === thisRequestId) {
+          setIsStreaming(false);
+        }
+      }
+    },
+    [api, fetchFn, enableValidation, maxRetries, streamRequest],
+  );
+
+  // Cleanup on unmount
+  useEffect(() => {
+    return () => {
+      abortControllerRef.current?.abort();
+    };
+  }, []);
+
+  return {
+    spec,
+    isStreaming,
+    error,
+    send,
+    stop,
+    clear,
+  };
+}
+
+/**
+ * Convert a flat element list to a Spec.
+ * Input elements use key/parentKey to establish identity and relationships.
+ * Output spec uses the map-based format where key is the map entry key
+ * and parent-child relationships are expressed through children arrays.
+ */
+export function flatToTree(elements: FlatElement[]): Spec {
+  const elementMap: Record<string, UIElement> = {};
+  let root = "";
+
+  // First pass: add all elements to map
+  for (const element of elements) {
+    elementMap[element.key] = {
+      type: element.type,
+      props: element.props,
+      children: [],
+      visible: element.visible,
+    };
+  }
+
+  // Second pass: build parent-child relationships
+  for (const element of elements) {
+    if (element.parentKey) {
+      const parent = elementMap[element.parentKey];
+      if (parent) {
+        if (!parent.children) {
+          parent.children = [];
+        }
+        parent.children.push(element.key);
+      } else {
+        console.warn(
+          `[json-render] flatToTree: element "${element.key}" references parent "${element.parentKey}" which does not exist. Element will be orphaned.`,
+        );
+      }
+    } else {
+      if (root) {
+        console.warn(
+          `[json-render] flatToTree: multiple root elements found ("${root}" and "${element.key}"). Using "${element.key}" as root.`,
+        );
+      }
+      root = element.key;
+    }
+  }
+
+  return { root, elements: elementMap };
+}

packages/ink/src/index.ts

@@ -0,0 +1,103 @@
+// Contexts
+export {
+  StateProvider,
+  useStateStore,
+  useStateValue,
+  useStateBinding,
+  type StateContextValue,
+  type StateProviderProps,
+} from "./contexts/state";
+
+export {
+  VisibilityProvider,
+  useVisibility,
+  useIsVisible,
+  type VisibilityContextValue,
+  type VisibilityProviderProps,
+} from "./contexts/visibility";
+
+export {
+  ActionProvider,
+  useActions,
+  useAction,
+  ConfirmDialog,
+  type ActionContextValue,
+  type ActionProviderProps,
+  type PendingConfirmation,
+  type ConfirmDialogProps,
+} from "./contexts/actions";
+
+export {
+  ValidationProvider,
+  useValidation,
+  useOptionalValidation,
+  useFieldValidation,
+  type ValidationContextValue,
+  type ValidationProviderProps,
+  type FieldValidationState,
+} from "./contexts/validation";
+
+export {
+  RepeatScopeProvider,
+  useRepeatScope,
+  type RepeatScopeValue,
+} from "./contexts/repeat-scope";
+
+export { FocusProvider, useFocus, useFocusDisable } from "./contexts/focus";
+
+// Schema (Ink's spec format)
+export { schema, type InkSchema, type InkSpec } from "./schema";
+
+// Core types (re-exported for convenience)
+export type { Spec, StateStore } from "@json-render/core";
+export { createStateStore } from "@json-render/core";
+
+// Catalog-aware types for Ink
+export type {
+  SetState,
+  StateModel,
+  ComponentContext,
+  ComponentFn,
+  Components,
+  ActionFn,
+  Actions,
+} from "./catalog-types";
+
+// Renderer
+export {
+  // Registry
+  defineRegistry,
+  type DefineRegistryResult,
+  // createRenderer (higher-level, includes providers)
+  createRenderer,
+  type CreateRendererProps,
+  type ComponentMap,
+  // Low-level
+  Renderer,
+  JSONUIProvider,
+  type ComponentRenderProps,
+  type ComponentRenderer,
+  type ComponentRegistry,
+  type RendererProps,
+  type JSONUIProviderProps,
+} from "./renderer";
+
+// Standard components
+export { standardComponents } from "./components/standard";
+
+// Hooks
+export {
+  useUIStream,
+  useBoundProp,
+  flatToTree,
+  type UseUIStreamOptions,
+  type UseUIStreamReturn,
+} from "./hooks";
+
+// Catalog definitions
+export {
+  standardComponentDefinitions,
+  standardActionDefinitions,
+  type ComponentDefinition,
+  type ActionDefinition,
+} from "./catalog";

packages/ink/src/renderer.test.tsx

@@ -0,0 +1,50 @@
+import { describe, it, expect } from "vitest";
+import React from "react";
+import { Renderer } from "./renderer";
+
+describe("Renderer", () => {
+  it("renders null for null spec", () => {
+    const element = React.createElement(Renderer, {
+      spec: null,
+      registry: {},
+    });
+    expect(element).toBeDefined();
+    expect(element.props.spec).toBeNull();
+  });
+
+  it("renders null for spec without root", () => {
+    const element = React.createElement(Renderer, {
+      spec: { root: "", elements: {} },
+      registry: {},
+    });
+    expect(element).toBeDefined();
+  });
+
+  it("accepts loading prop", () => {
+    const element = React.createElement(Renderer, {
+      spec: null,
+      registry: {},
+      loading: true,
+    });
+    expect(element.props.loading).toBe(true);
+  });
+
+  it("accepts fallback prop", () => {
+    const Fallback = () => React.createElement("div", null, "Unknown");
+
+    const element = React.createElement(Renderer, {
+      spec: null,
+      registry: {},
+      fallback: Fallback,
+    });
+    expect(element.props.fallback).toBe(Fallback);
+  });
+
+  it("merges standard components by default", () => {
+    const element = React.createElement(Renderer, {
+      spec: null,
+      includeStandard: true,
+    });
+    expect(element.props.includeStandard).toBe(true);
+  });
+});

packages/ink/src/renderer.tsx

@@ -0,0 +1,722 @@
+import React, {
+  type ComponentType,
+  type ErrorInfo,
+  type ReactNode,
+  useCallback,
+  useMemo,
+} from "react";
+import { Text } from "ink";
+import type {
+  UIElement,
+  Spec,
+  Catalog,
+  SchemaDefinition,
+  StateStore,
+} from "@json-render/core";
+import {
+  resolveElementProps,
+  resolveBindings,
+  resolveActionParam,
+  evaluateVisibility,
+  getByPath,
+  type PropResolutionContext,
+} from "@json-render/core";
+import type {
+  Components,
+  Actions,
+  SetState,
+  StateModel,
+} from "./catalog-types";
+import { useVisibility, VisibilityProvider } from "./contexts/visibility";
+import { useActions, ActionProvider, ConfirmDialog } from "./contexts/actions";
+import { useStateStore, StateProvider } from "./contexts/state";
+import { ValidationProvider } from "./contexts/validation";
+import { standardComponents } from "./components/standard";
+import { RepeatScopeProvider, useRepeatScope } from "./contexts/repeat-scope";
+import { FocusProvider } from "./contexts/focus";
+
+/**
+ * Props passed to component renderers
+ */
+export interface ComponentRenderProps<P = Record<string, unknown>> {
+  /** The element being rendered */
+  element: UIElement<string, P>;
+  /** Rendered children */
+  children?: ReactNode;
+  /** Emit a named event. The renderer resolves the event to action binding(s) from the element's `on` field. */
+  emit: (event: string) => void;
+  /**
+   * Two-way binding paths resolved from `$bindState` / `$bindItem` expressions.
+   * Maps prop name → absolute state path for write-back.
+   */
+  bindings?: Record<string, string>;
+  /** Whether the parent is loading */
+  loading?: boolean;
+}
+
+/**
+ * Component renderer type
+ */
+export type ComponentRenderer<P = Record<string, unknown>> = ComponentType<
+  ComponentRenderProps<P>
+>;
+
+/**
+ * Registry of component renderers
+ */
+export type ComponentRegistry = Record<string, ComponentRenderer<any>>;
+
+/**
+ * Props for the Renderer component
+ */
+export interface RendererProps {
+  /** The UI spec to render */
+  spec: Spec | null;
+  /**
+   * Component registry. If omitted, only standard components are used.
+   * When provided, custom components are merged with (and override) standard components.
+   */
+  registry?: ComponentRegistry;
+  /** Whether to include standard components (default: true) */
+  includeStandard?: boolean;
+  /** Whether the spec is currently loading/streaming */
+  loading?: boolean;
+  /** Fallback component for unknown types */
+  fallback?: ComponentRenderer;
+}
+
+// ---------------------------------------------------------------------------
+// ElementErrorBoundary – catches rendering errors in individual elements
+// ---------------------------------------------------------------------------
+
+interface ElementErrorBoundaryProps {
+  elementType: string;
+  children: ReactNode;
+}
+
+interface ElementErrorBoundaryState {
+  hasError: boolean;
+  /** The elementType at the time of the error — used to reset when the type changes. */
+  errorType: string | null;
+}
+
+class ElementErrorBoundary extends React.Component<
+  ElementErrorBoundaryProps,
+  ElementErrorBoundaryState
+> {
+  constructor(props: ElementErrorBoundaryProps) {
+    super(props);
+    this.state = { hasError: false, errorType: null };
+  }
+
+  static getDerivedStateFromError(): Partial<ElementErrorBoundaryState> {
+    return { hasError: true, errorType: "__pending__" };
+  }
+
+  static getDerivedStateFromProps(
+    props: ElementErrorBoundaryProps,
+    state: ElementErrorBoundaryState,
+  ): Partial<ElementErrorBoundaryState> | null {
+    // Reset error state when the element type changes (e.g. spec update replaced
+    // the erroring component). Same-key/same-type errors are still sticky to
+    // prevent infinite error loops; callers can force a reset by changing the key.
+    // "__pending__" means getDerivedStateFromError fired but componentDidCatch
+    // hasn't set the real type yet — don't reset in that window.
+    if (
+      state.hasError &&
+      state.errorType !== null &&
+      state.errorType !== "__pending__" &&
+      state.errorType !== props.elementType
+    ) {
+      return { hasError: false, errorType: null };
+    }
+    return null;
+  }
+
+  componentDidCatch(error: Error, info: ErrorInfo) {
+    this.setState({ errorType: this.props.elementType });
+    console.error(
+      `[json-render] Rendering error in <${this.props.elementType}>:`,
+      error,
+      info.componentStack,
+    );
+  }
+
+  render() {
+    if (this.state.hasError) {
+      return null;
+    }
+    return this.props.children;
+  }
+}
+
+interface ElementRendererProps {
+  element: UIElement;
+  spec: Spec;
+  registry: ComponentRegistry;
+  loading?: boolean;
+  fallback?: ComponentRenderer;
+}
+
+/**
+ * Element renderer component.
+ * Memoized to prevent re-rendering all repeat children when state changes.
+ */
+const ElementRenderer = React.memo(function ElementRenderer({
+  element,
+  spec,
+  registry,
+  loading,
+  fallback,
+}: ElementRendererProps) {
+  const repeatScope = useRepeatScope();
+  const { ctx } = useVisibility();
+  const { execute } = useActions();
+  const { getSnapshot } = useStateStore();
+
+  // Build context with repeat scope
+  const fullCtx: PropResolutionContext = useMemo(
+    () =>
+      repeatScope
+        ? {
+            ...ctx,
+            repeatItem: repeatScope.item,
+            repeatIndex: repeatScope.index,
+            repeatBasePath: repeatScope.basePath,
+          }
+        : ctx,
+    [ctx, repeatScope],
+  );
+
+  // Evaluate visibility
+  const isVisible =
+    element.visible === undefined
+      ? true
+      : evaluateVisibility(element.visible, fullCtx);
+
+  // Create emit function that resolves events to action bindings.
+  // Errors are caught internally so callers (useInput callbacks) don't
+  // produce unhandled promise rejections.
+  const onBindings = element.on;
+  const emit = useCallback(
+    (eventName: string) => {
+      const binding = onBindings?.[eventName];
+      if (!binding) return;
+      const actionBindings = Array.isArray(binding) ? binding : [binding];
+      (async () => {
+        for (const b of actionBindings) {
+          if (!b.params) {
+            await execute(b);
+            continue;
+          }
+          const liveCtx: PropResolutionContext = {
+            ...fullCtx,
+            stateModel: getSnapshot(),
+          };
+          const resolved: Record<string, unknown> = {};
+          for (const [key, val] of Object.entries(b.params)) {
+            resolved[key] = resolveActionParam(val, liveCtx);
+          }
+          await execute({ ...b, params: resolved });
+        }
+      })().catch((err) => {
+        console.error(
+          `[json-render] Error handling event "${eventName}":`,
+          err,
+        );
+      });
+    },
+    [onBindings, execute, fullCtx, getSnapshot],
+  );
+
+  if (!isVisible) {
+    return null;
+  }
+
+  // Resolve bindings and props
+  const rawProps = element.props as Record<string, unknown>;
+  const elementBindings = resolveBindings(rawProps, fullCtx);
+  const resolvedProps = resolveElementProps(rawProps, fullCtx);
+
+  const resolvedElement =
+    resolvedProps !== element.props
+      ? { ...element, props: resolvedProps }
+      : element;
+
+  const Component = registry[resolvedElement.type] ?? fallback;
+
+  if (!Component) {
+    console.warn(
+      `[json-render] No renderer for component type: ${resolvedElement.type}`,
+    );
+    return null;
+  }
+
+  // Render children (with repeat support)
+  const children = resolvedElement.repeat ? (
+    <RepeatChildren
+      element={resolvedElement}
+      spec={spec}
+      registry={registry}
+      loading={loading}
+      fallback={fallback}
+    />
+  ) : (
+    resolvedElement.children?.map((childKey) => {
+      const childElement = spec.elements[childKey];
+      if (!childElement) {
+        if (!loading) {
+          console.warn(
+            `[json-render] Missing element "${childKey}" referenced as child of "${resolvedElement.type}". This element will not render.`,
+          );
+          return (
+            <Text key={childKey} color="red">{`[Missing: ${childKey}]`}</Text>
+          );
+        }
+        return null;
+      }
+      return (
+        <ElementRenderer
+          key={childKey}
+          element={childElement}
+          spec={spec}
+          registry={registry}
+          loading={loading}
+          fallback={fallback}
+        />
+      );
+    })
+  );
+
+  return (
+    <ElementErrorBoundary elementType={resolvedElement.type}>
+      <Component
+        element={resolvedElement}
+        emit={emit}
+        bindings={elementBindings}
+        loading={loading}
+      >
+        {children}
+      </Component>
+    </ElementErrorBoundary>
+  );
+});
+
+// ---------------------------------------------------------------------------
+// RepeatChildren
+// ---------------------------------------------------------------------------
+
+function RepeatChildren({
+  element,
+  spec,
+  registry,
+  loading,
+  fallback,
+}: {
+  element: UIElement;
+  spec: Spec;
+  registry: ComponentRegistry;
+  loading?: boolean;
+  fallback?: ComponentRenderer;
+}) {
+  const { state } = useStateStore();
+  const repeat = element.repeat!;
+  const statePath = repeat.statePath;
+
+  const raw = getByPath(state, statePath);
+  const items = Array.isArray(raw) ? raw : [];
+
+  return (
+    <>
+      {items.map((itemValue, index) => {
+        const key =
+          repeat.key && typeof itemValue === "object" && itemValue !== null
+            ? String(
+                (itemValue as Record<string, unknown>)[repeat.key] ?? index,
+              )
+            : String(index);
+
+        return (
+          <RepeatScopeProvider
+            key={key}
+            item={itemValue}
+            index={index}
+            basePath={`${statePath}/${index}`}
+          >
+            {element.children?.map((childKey) => {
+              const childElement = spec.elements[childKey];
+              if (!childElement) {
+                if (!loading) {
+                  console.warn(
+                    `[json-render] Missing element "${childKey}" referenced as child of "${element.type}" (repeat). This element will not render.`,
+                  );
+                  return (
+                    <Text
+                      key={`${key}:${childKey}`}
+                      color="red"
+                    >{`[Missing: ${childKey}]`}</Text>
+                  );
+                }
+                return null;
+              }
+              return (
+                <ElementRenderer
+                  key={`${key}:${childKey}`}
+                  element={childElement}
+                  spec={spec}
+                  registry={registry}
+                  loading={loading}
+                  fallback={fallback}
+                />
+              );
+            })}
+          </RepeatScopeProvider>
+        );
+      })}
+    </>
+  );
+}
+
+/**
+ * Main renderer component.
+ *
+ * By default, standard Ink components are included.
+ * Custom components in `registry` override standard ones with the same name.
+ */
+export function Renderer({
+  spec,
+  registry: customRegistry,
+  includeStandard = true,
+  loading,
+  fallback,
+}: RendererProps) {
+  const registry: ComponentRegistry = useMemo(
+    () => ({
+      ...(includeStandard ? standardComponents : {}),
+      ...customRegistry,
+    }),
+    [customRegistry, includeStandard],
+  );
+
+  if (!spec || !spec.root) {
+    return null;
+  }
+
+  const rootElement = spec.elements[spec.root];
+  if (!rootElement) {
+    return null;
+  }
+
+  return (
+    <ElementRenderer
+      element={rootElement}
+      spec={spec}
+      registry={registry}
+      loading={loading}
+      fallback={fallback}
+    />
+  );
+}
+
+/**
+ * Props for JSONUIProvider
+ */
+export interface JSONUIProviderProps {
+  /**
+   * External store (controlled mode). When provided, `initialState` and
+   * `onStateChange` are ignored.
+   */
+  store?: StateStore;
+  /** Initial state model (uncontrolled mode) */
+  initialState?: Record<string, unknown>;
+  /** Action handlers */
+  handlers?: Record<
+    string,
+    (params: Record<string, unknown>) => Promise<unknown> | unknown
+  >;
+  /** Navigation function */
+  navigate?: (path: string) => void;
+  /** Custom validation functions */
+  validationFunctions?: Record<
+    string,
+    (value: unknown, args?: Record<string, unknown>) => boolean
+  >;
+  /** Callback when state changes (uncontrolled mode) */
+  onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void;
+  children: ReactNode;
+}
+
+/**
+ * Combined provider for all JSONUI contexts
+ */
+export function JSONUIProvider({
+  store,
+  initialState,
+  handlers,
+  navigate,
+  validationFunctions,
+  onStateChange,
+  children,
+}: JSONUIProviderProps) {
+  return (
+    <StateProvider
+      store={store}
+      initialState={initialState}
+      onStateChange={onStateChange}
+    >
+      <VisibilityProvider>
+        <ValidationProvider customFunctions={validationFunctions}>
+          <ActionProvider handlers={handlers} navigate={navigate}>
+            <FocusProvider>
+              {children}
+              <ConfirmationDialogManager />
+            </FocusProvider>
+          </ActionProvider>
+        </ValidationProvider>
+      </VisibilityProvider>
+    </StateProvider>
+  );
+}
+
+/**
+ * Renders the confirmation dialog when needed
+ */
+function ConfirmationDialogManager() {
+  const { pendingConfirmation, confirm, cancel } = useActions();
+
+  if (!pendingConfirmation?.action.confirm) {
+    return null;
+  }
+
+  return (
+    <ConfirmDialog
+      confirm={pendingConfirmation.action.confirm}
+      onConfirm={confirm}
+      onCancel={cancel}
+    />
+  );
+}
+
+// ============================================================================
+// defineRegistry
+// ============================================================================
+
+/**
+ * Result returned by defineRegistry
+ */
+export interface DefineRegistryResult {
+  /** Component registry for `<Renderer registry={...} />` */
+  registry: ComponentRegistry;
+  /**
+   * Create ActionProvider-compatible handlers.
+   */
+  handlers: (
+    getSetState: () => SetState | undefined,
+    getState: () => StateModel,
+  ) => Record<string, (params: Record<string, unknown>) => Promise<void>>;
+  /**
+   * Execute an action by name imperatively
+   */
+  executeAction: (
+    actionName: string,
+    params: Record<string, unknown> | undefined,
+    setState: SetState,
+    state?: StateModel,
+  ) => Promise<void>;
+}
+
+/**
+ * Create a registry from a catalog with components and/or actions.
+ */
+export function defineRegistry<C extends Catalog>(
+  _catalog: C,
+  options: {
+    components?: Components<C>;
+    actions?: Actions<C>;
+  },
+): DefineRegistryResult {
+  const registry: ComponentRegistry = {};
+  if (options.components) {
+    for (const [name, componentFn] of Object.entries(options.components)) {
+      registry[name] = ({
+        element,
+        children,
+        emit,
+        bindings,
+        loading,
+      }: ComponentRenderProps) => {
+        return (componentFn as DefineRegistryComponentFn)({
+          props: element.props,
+          children,
+          emit,
+          bindings,
+          loading,
+        });
+      };
+    }
+  }
+
+  const actionMap = options.actions
+    ? (Object.entries(options.actions) as Array<
+        [string, DefineRegistryActionFn]
+      >)
+    : [];
+
+  const handlers = (
+    getSetState: () => SetState | undefined,
+    getState: () => StateModel,
+  ): Record<string, (params: Record<string, unknown>) => Promise<void>> => {
+    const result: Record<
+      string,
+      (params: Record<string, unknown>) => Promise<void>
+    > = {};
+    for (const [name, actionFn] of actionMap) {
+      result[name] = async (params) => {
+        const setState = getSetState();
+        const state = getState();
+        if (setState) {
+          await actionFn(params, setState, state);
+        } else {
+          console.warn(
+            `[json-render] Action "${name}" skipped: setState not available. ` +
+              `Ensure the action handler is used within a mounted StateProvider.`,
+          );
+        }
+      };
+    }
+    return result;
+  };
+
+  const executeAction = async (
+    actionName: string,
+    params: Record<string, unknown> | undefined,
+    setState: SetState,
+    state: StateModel = {},
+  ): Promise<void> => {
+    const entry = actionMap.find(([name]) => name === actionName);
+    if (entry) {
+      await entry[1](params, setState, state);
+    } else {
+      console.warn(`[json-render] Unknown action: ${actionName}`);
+    }
+  };
+
+  return { registry, handlers, executeAction };
+}
+
+/** @internal */
+type DefineRegistryComponentFn = (ctx: {
+  props: unknown;
+  children?: React.ReactNode;
+  emit: (event: string) => void;
+  bindings?: Record<string, string>;
+  loading?: boolean;
+}) => React.ReactNode;
+
+/** @internal */
+type DefineRegistryActionFn = (
+  params: Record<string, unknown> | undefined,
+  setState: SetState,
+  state: StateModel,
+) => Promise<void>;
+
+// ============================================================================
+// createRenderer
+// ============================================================================
+
+/**
+ * Props for renderers created with createRenderer
+ */
+export interface CreateRendererProps {
+  /** The spec to render (AI-generated JSON) */
+  spec: Spec | null;
+  /**
+   * External store (controlled mode).
+   */
+  store?: StateStore;
+  /** State context for dynamic values (uncontrolled mode) */
+  state?: Record<string, unknown>;
+  /** Action handler */
+  onAction?: (actionName: string, params?: Record<string, unknown>) => void;
+  /** Callback when state changes (uncontrolled mode) */
+  onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void;
+  /** Whether the spec is currently loading/streaming */
+  loading?: boolean;
+  /** Fallback component for unknown types */
+  fallback?: ComponentRenderer;
+}
+
+/**
+ * Component map type
+ */
+export type ComponentMap<
+  TComponents extends Record<string, { props: unknown }>,
+> = {
+  [K in keyof TComponents]: ComponentType<
+    ComponentRenderProps<
+      TComponents[K]["props"] extends { _output: infer O }
+        ? O
+        : Record<string, unknown>
+    >
+  >;
+};
+
+/**
+ * Create a renderer from a catalog
+ */
+export function createRenderer<
+  TDef extends SchemaDefinition,
+  TCatalog extends { components: Record<string, { props: unknown }> },
+>(
+  _catalog: Catalog<TDef, TCatalog>,
+  components: ComponentMap<TCatalog["components"]>,
+): ComponentType<CreateRendererProps> {
+  const registry: ComponentRegistry =
+    components as unknown as ComponentRegistry;
+
+  return function CatalogRenderer({
+    spec,
+    store,
+    state,
+    onAction,
+    onStateChange,
+    loading,
+    fallback,
+  }: CreateRendererProps) {
+    const actionHandlers = useMemo(
+      () =>
+        onAction
+          ? new Proxy(
+              {} as Record<
+                string,
+                (params: Record<string, unknown>) => void | Promise<void>
+              >,
+              {
+                get: (_target, prop: string) => {
+                  return (params: Record<string, unknown>) =>
+                    onAction(prop, params);
+                },
+                has: () => true,
+              },
+            )
+          : undefined,
+      [onAction],
+    );
+
+    return (
+      <JSONUIProvider
+        store={store}
+        initialState={state}
+        handlers={actionHandlers}
+        onStateChange={onStateChange}
+      >
+        <Renderer
+          spec={spec}
+          registry={registry}
+          loading={loading}
+          fallback={fallback}
+        />
+      </JSONUIProvider>
+    );
+  };
+}

packages/ink/src/schema.ts

@@ -0,0 +1,100 @@
+import { defineSchema, type Spec } from "@json-render/core";
+
+/**
+ * Ink terminal schema definition.
+ *
+ * Defines the spec shape (what the AI generates) and catalog shape
+ * (what the developer provides as component + action definitions).
+ */
+export const schema = defineSchema(
+  (s) => ({
+    // What the AI-generated SPEC looks like
+    spec: s.object({
+      /** Root element key */
+      root: s.string(),
+      /** Flat map of elements by key */
+      elements: s.record(
+        s.object({
+          /** Component type from catalog */
+          type: s.ref("catalog.components"),
+          /** Component props */
+          props: s.propsOf("catalog.components"),
+          /** Child element keys (flat reference) */
+          children: s.array(s.string()),
+          /** Visibility condition */
+          visible: s.any(),
+        }),
+      ),
+    }),
+    // What the CATALOG must provide
+    catalog: s.object({
+      /** Component definitions */
+      components: s.map({
+        /** Zod schema for component props */
+        props: s.zod(),
+        /** Slots for this component. Use ['default'] for children, or named slots like ['header', 'footer'] */
+        slots: s.array(s.string()),
+        /** Description for AI generation hints */
+        description: s.string(),
+        /** Example prop values used in prompt examples (auto-generated from Zod schema if omitted) */
+        example: s.any(),
+      }),
+      /** Action definitions (optional) */
+      actions: s.map({
+        /** Zod schema for action params */
+        params: s.zod(),
+        /** Description for AI generation hints */
+        description: s.string(),
+      }),
+    }),
+  }),
+  {
+    builtInActions: [
+      {
+        name: "setState",
+        description:
+          "Update a value in the state model at the given statePath. Params: { statePath: string, value: any }",
+      },
+      {
+        name: "pushState",
+        description:
+          'Append an item to an array in state. Params: { statePath: string, value: any, clearStatePath?: string }. Value can contain {"$state":"/path"} refs and "$id" for auto IDs.',
+      },
+      {
+        name: "removeState",
+        description:
+          "Remove an item from an array in state by index. Params: { statePath: string, index: number }",
+      },
+    ],
+    defaultRules: [
+      // Element integrity
+      "CRITICAL INTEGRITY CHECK: Before outputting ANY element that references children, you MUST have already output (or will output) each child as its own element. If an element has children: ['a', 'b'], then elements 'a' and 'b' MUST exist. A missing child element causes that entire branch of the UI to be invisible.",
+      "SELF-CHECK: After generating all elements, mentally walk the tree from root. Every key in every children array must resolve to a defined element. If you find a gap, output the missing element immediately.",
+      // Field placement
+      'CRITICAL: The "visible" field goes on the ELEMENT object, NOT inside "props". Correct: {"type":"<ComponentName>","props":{},"visible":{"$state":"/tab","eq":"home"},"children":[...]}.',
+      'CRITICAL: The "on" field goes on the ELEMENT object, NOT inside "props". Use on.press, on.change, on.submit etc. NEVER put action/actionParams inside props.',
+      // State and data
+      "When the user asks for a UI that displays data (e.g. logs, tasks, metrics), ALWAYS include a state field with realistic sample data. The state field is a top-level field on the spec (sibling of root/elements).",
+      'When building repeating content backed by a state array, use the "repeat" field on a container element. Example: { "type": "Box", "props": { "flexDirection": "column" }, "repeat": { "statePath": "/items", "key": "id" }, "children": ["item-row"] }. Inside repeated children, use { "$item": "field" } to read a field from the current item, and { "$index": true } for the current array index.',
+      // Terminal UI design
+      "This UI renders in a terminal using Ink. Use Box for layout (flexDirection, padding, gap), Text for text content. Keep designs compact and readable in monospace.",
+      "Terminal UIs have limited width (~80-120 columns). Prefer vertical layouts (flexDirection: column) for main structure. Use horizontal layouts (flexDirection: row) for inline elements like badges, key-value pairs, and table rows.",
+      "Use borderStyle on Box for visual grouping (single, double, round, bold). Use padding sparingly — 1 unit is usually enough.",
+      "For color, use named terminal colors: red, green, yellow, blue, magenta, cyan, white, gray. Use hex colors sparingly.",
+      "Always include realistic, professional-looking sample data. For lists include 3-5 items with varied content. Never leave data empty.",
+      "Use Heading for section titles, Divider to separate sections, Badge for status indicators, KeyValue for labeled data, and Card for bordered groups.",
+      "Use Tabs for multi-view UIs — bind the active tab to state and use visible conditions on child content to show/hide tab panels. Use MultiSelect for picking multiple items. Use ConfirmInput for yes/no prompts before destructive actions.",
+      "Use Sparkline for inline trend visualization (compact, one line). Use BarChart for comparing values across categories (horizontal bars with labels). Both work well in dashboards alongside KeyValue and ProgressBar.",
+    ],
+  },
+);
+
+/**
+ * Type alias for the Ink schema
+ */
+export type InkSchema = typeof schema;
+
+/**
+ * Spec type for Ink (parameterized by catalog)
+ */
+export type InkSpec = Spec;

packages/ink/src/server.ts

@@ -0,0 +1,23 @@
+// Server-safe entry point: schema and catalog definitions only.
+// Uses `import type` for React types (erased at runtime — no React dependency).
+
+export { schema, type InkSchema, type InkSpec } from "./schema";
+
+export {
+  standardComponentDefinitions,
+  standardActionDefinitions,
+  type ComponentDefinition,
+  type ActionDefinition,
+} from "./catalog";
+
+export type { Spec } from "@json-render/core";
+
+export type {
+  SetState,
+  StateModel,
+  ComponentContext,
+  ComponentFn,
+  Components,
+  ActionFn,
+  Actions,
+} from "./catalog-types";

packages/ink/tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "extends": "@internal/typescript-config/react-library.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src"
+  },
+  "include": ["src"],
+  "exclude": ["node_modules", "dist"]
+}

packages/ink/tsup.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from "tsup";
+
+export default defineConfig({
+  entry: ["src/index.ts", "src/schema.ts", "src/catalog.ts", "src/server.ts"],
+  format: ["cjs", "esm"],
+  dts: { resolve: ["@internal/react-state"] },
+  sourcemap: true,
+  clean: true,
+  noExternal: ["@internal/react-state"],
+  external: ["react", "ink", "@json-render/core", "zod"],
+});

packages/jotai/CHANGELOG.md

@@ -1,5 +1,12 @@
 # @json-render/jotai
 
+## 0.15.0
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+
 ## 0.14.1
 
 ### Patch Changes

packages/jotai/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/jotai",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "Jotai adapter for json-render StateStore",
   "keywords": [

packages/mcp/CHANGELOG.md

@@ -1,5 +1,12 @@
 # @json-render/mcp
 
+## 0.15.0
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+
 ## 0.14.1
 
 ### Patch Changes

packages/mcp/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/mcp",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "MCP Apps integration for @json-render/core. Serve json-render UIs as interactive MCP Apps in Claude, ChatGPT, Cursor, and VS Code.",
   "keywords": [

packages/react-email/CHANGELOG.md

@@ -1,5 +1,12 @@
 # @json-render/react-email
 
+## 0.15.0
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+
 ## 0.14.1
 
 ### Patch Changes

packages/react-email/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/react-email",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "React Email renderer for @json-render/core. JSON becomes HTML emails.",
   "keywords": [

packages/react-native/CHANGELOG.md

@@ -1,5 +1,12 @@
 # @json-render/react-native
 
+## 0.15.0
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+
 ## 0.14.1
 
 ### Patch Changes

packages/react-native/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/react-native",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "React Native renderer for @json-render/core. JSON becomes React Native components.",
   "keywords": [

packages/react-pdf/CHANGELOG.md

@@ -1,5 +1,12 @@
 # @json-render/react-pdf
 
+## 0.15.0
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+
 ## 0.14.1
 
 ### Patch Changes

packages/react-pdf/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/react-pdf",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "React PDF renderer for @json-render/core. JSON becomes PDF documents.",
   "keywords": [

packages/react-state/CHANGELOG.md

@@ -1,5 +1,12 @@
 # @internal/react-state
 
+## 0.8.10
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+
 ## 0.8.9
 
 ### Patch Changes

packages/react-state/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@internal/react-state",
-  "version": "0.8.9",
+  "version": "0.8.10",
   "private": true,
   "license": "Apache-2.0",
   "description": "Shared React state context for json-render renderer packages",

packages/react-three-fiber/CHANGELOG.md

@@ -1,5 +1,13 @@
 # @json-render/react-three-fiber
 
+## 0.15.0
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+  - @json-render/react@0.15.0
+
 ## 0.14.1
 
 ### Patch Changes

packages/react-three-fiber/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/react-three-fiber",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "React Three Fiber renderer for @json-render/core. JSON becomes 3D scenes.",
   "keywords": [

packages/react/CHANGELOG.md

@@ -1,5 +1,12 @@
 # @json-render/react
 
+## 0.15.0
+
+### Patch Changes
+
+- Updated dependencies [bf3a7ec]
+  - @json-render/core@0.15.0
+
 ## 0.14.1
 
 ### Patch Changes

packages/react/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/react",
-  "version": "0.14.1",
+  "version": "0.15.0",
   "license": "Apache-2.0",
   "description": "React renderer for @json-render/core. JSON becomes React components.",
   "keywords": [