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Vercel Labs' official open-source Generative UI framework. json-render lets models generate interfaces from prompts while staying constrained to a developer-defined component catalog, then progressively renders the resulting spec across web, mobile, and other runtimes.
Resumen
1. Guardrailed GenUI: AI can only emit components and actions from a trusted catalog
2. Streaming runtime: Designed for progressive rendering rather than one-shot static output
3. Cross-framework reach: Supports React, Vue, Svelte, Solid, React Native, and more from the same core model
4. Implementation depth: A concrete framework for teams evaluating schema-driven GenUI beyond demos
5. Distinct from existing Vercel entries: Complements v0 and AI SDK coverage with a stricter catalog-based rendering architecture