v0.2.1 / MIT
The UI design system for AI agents.
Copy, paste, ship.
239 open-source React components for building AI apps — chat, streaming, tool calls, citations, agents, and artifacts. Every component is also a machine-readable JSON descriptor: agents (Claude, Cursor, Cline, Continue) read the registry directly without scraping HTML.
pnpm dlx shadcn@latest add https://ui.vllnt.ai/r/button.json- MIT
- TypeScript
- RSC compatible
- Tailwind v4 ready
239
Components
12
Categories
v0.2.1
Library version
2026-06-17
Last build
Release channels
The site tracks the latest tagged release. Canary ships from main on every commit — see what is coming next.
The latest tagged release on the npm latest tag — what a default install resolves to.
Latest releases
Follow what changed across the component library, registry, and release pipeline.
- 0.3.0What's new
v0.3.0
Release intelligence surface — /changelog, /releases, /rss.xml, and /atom.xml expose one changelog source through HTML, GitHub release cards, and feed readers. /docs/changelog redirects to /changelog.
Read notes - 0.2.1
v0.2.1
Public API: ProgressCard now re-exported from @vllnt/ui — it shipped in 0.2.0's tarball but was missing from the barrel, so import { ProgressCard } from "@vllnt/ui" resolved to undefined.
Read notes - 0.2.0
v0.2.0
AI family — AIChatInput, AIMessageBubble, AISourceCitation, AIStreamingText, AIToolCallDisplay, ThinkingBlock, ModelSelector.
Read notes
Built so AI coding agents can use it directly.
Every component ships as a machine-readable JSON descriptor with name, version, stability, accessibility schema, usage examples, and prop definitions. Agents discover the registry through three surfaces.
Featured components
A few favourites. Browse all 239 from /components.
Build with the community.
MIT licensed. No tracking. No backend. Issues, ideas, and pull requests welcome.