Developer and API documentation for the A2UI Atomic Catalog. All developer resources are free, unauthenticated, and machine-readable.
POST /api/render | Render atom payload to standalone HTML page (50 req/day) |
POST /api/compose | Natural language prompt → typed atom blocks (20 req/day) |
GET /ask?q=... | Natural-language search over the atom catalog (60 req/day) |
GET /api/data/{source} | Declared data source proxy (data-sources.yaml) |
GET /spec.json | Full atom vocabulary (501 atoms) with all field contracts |
GET /catalogue/atoms-json-schema.json | Strict JSON Schema for constrained agent decoding |
GET /catalogue/index.json | Compact catalog selection menu |
https://a2uicatalog.ai/mcp — tools for composing, rendering, and publishing UI atoms.https://a2uicatalog.ai/mcp-docs — tools (search_docs, list_docs) for querying documentation.