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JSON Render Shadcn
JSON Render Shadcn
AI-generated UI using @json-render/shadcn. Describe a UI in natural language and watch it render with shadcn components.
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Problems solved
Technical challenges this implementation handles out of the box.
- Build UIs from natural-language prompts with json-render
- Stream AI-generated component specs into a live preview
- Render shadcn components from a constrained catalog
Use cases
Products and workflows this pattern is designed to support.
- UI playgrounds for prompt-to-interface
- Dashboard builders
- Form generators
- Design-to-shadcn prototyping
Setup
Requirements, wiring steps, and what this pattern adds to your project.
Getting started
Pick how you want to pull this pattern in. Then wire env vars and routes the same way.
- 1
Download → Next.js app
Use Download → Next.js app in the preview toolbar. You get a zip scaffold (Pro downloads rewrite preview `/view/.../api/*` paths to `/api/*` automatically).
- 2
Extract the zip and install dependencies
Unzip the archive, then run `pnpm install` (or npm / yarn) in the project folder.
- 3
Fill .env.local
The download includes .env.local placeholders when needed. Add real values for: AI_GATEWAY_API_KEY.
- 4
Customize the agent and tool files
Adapt prompts, tools, and stop conditions in the generated project for your product.
- 5
Run the app and open the pattern route
Run `pnpm dev`, open the setup/checklist page if present, then navigate to the generated pattern route and verify responses.
Environment variables
AI_GATEWAY_API_KEYGet key
Capabilities
AI SDK APIs
streamTextgatewayProviders
OpenAI
External services
Upstash
Files added
10 filesapp/page.tsxapp/layout.tsxapp/api/json-render-shadcn/route.tscomponents/json-render-demo.tsxcomponents/empty-state.tsxlib/catalog.tslib/registry.tsxlib/rate-limit.tslib/request-utils.tsREADME.md
Dependencies
13 totalnpm packages
9AISDK@json-render/core@json-render/react@json-render/shadcnUpstashlucide-reactNext.jsReactZod
Registry components
buttonemptyinputscroll-area
Critical files
lib/catalog.tsDefines the json-render catalog using defineCatalog with shadcn component definitions. This is the component registry that maps JSON spec types to renderable shadcn components.
lib/registry.tsxReact component registry mapping json-render component names to actual shadcn/ui React components. Used by the renderer to resolve components at runtime.
json-render-shadcn/route.tsStreaming API endpoint. Uses catalog.prompt() to generate the system prompt, streams AI-generated JSON specs via streamText with gateway('google/gemini-3-flash').
Requirements
- Complexity
- Intermediate
- Setup time
- ~5 minutes
- Node
- 24+
- Memory
- 256MB
Upstash Redis
