llms.txt@public/developers git:20260731.a64d083A

Immutable. This exact content is served forever at /api/v1/blob/69c9b50be58f93c3.

# A2UI Atomic Catalog — Developers

> Scoped context for integration questions only. For the full site overview, see
> https://a2uicatalog.ai/llms.txt instead.

## Connect

- MCP server: https://a2uicatalog.ai/mcp — no API key, no signup. `POST` speaks JSON-RPC 2.0
  (Streamable HTTP). `GET` with `Accept: application/json` returns a live server descriptor
  (every tool, current rate limits).
- REST: `GET /spec.json` (full atom vocabulary), `GET /catalogue/atoms-json-schema.json`
  (strict per-atom JSON Schema for constrained decoding), `POST /api/compose` (natural
  language to atom blocks).

## Reference

- OpenAPI 3.1 specification: https://a2uicatalog.ai/openapi.json
- Auth & rate limits (the real per-tool numbers): https://a2uicatalog.ai/.well-known/agent-auth.md
- Self-host your own renderer (4 commands, no cost beyond a Google account):
  https://a2uicatalog.ai/developers/

## Terms

Free, MIT licensed, no signup. Source: https://github.com/a2uicatalog/a2ui