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CommunityRepos & SDKs18k starsVerified 2026-09-22

json-render

Generative UI framework with an experimental Jev composer that selects components and layout from application-supplied candidates through Vercel AI Gateway, rendering catalog-constrained JSON specs.

Open github.comvercel-labs/json-render
Category
Repos & SDKs
Published by
Community
Author
vercel-labs
Added
2026-09-22
Tagscommunitytypescriptvercelgateway

Highlights

  • Applications define a catalog of components and actions with Zod schemas, and AI output is constrained to that catalog.
  • Ships renderers for React, Vue, Svelte, Solid, React Native, Remotion, PDF, email, terminal and 3D, plus 36 shadcn/ui components.
  • The Jev composer is unreleased and needs a source build; application code owns components, actions and side effects.
  • The framework's core promise is JSON that matches your schema every time, streamed and rendered progressively.

Quickstart

ts
import { defineCatalog } from "@json-render/core";
import { schema } from "@json-render/react/schema";
import { z } from "zod";

const catalog = defineCatalog(schema, {
  components: {
    Card: { props: z.object({ title: z.string() }), description: "A card container" },
  },
});

Watch out

Apache-2.0. The Jev API is unreleased and requires a source build and a Vercel AI Gateway key; applications keep ownership of components, actions and side effects.

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From the community

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iwashi / Yoshimasa Iwase
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小墨同学
小墨同学
@xiaomovps

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