Public agent API

QuiltLab for agents

A thin, versioned HTTP surface for Muse, ChatGPT, and IDE agents. OpenAPI 3 is the contract. The API reference is generated from that spec. The same operations are MCP tools at /mcp.

OpenAPI JSONllms.txtMCP endpoint

Connect Muse / ChatGPT

  1. Read discovery: /llms.txt, /.well-known/api-catalog, and /.well-known/oauth-protected-resource.
  2. Authenticate with Clerk OAuth 2.1. QuiltLab does not issue API keys in v1. Use the same bearer token the MCP server accepts. Browser sessions also work; cookie writes validate Origin and Referer.
  3. Explore the API reference, or connect an MCP client to /mcp. Arazzo workflows at /api/v1/arazzo.yaml cover create-project, start-block, and start-design.
  4. Heavy editing stays on quiltlab.co. Creates return editor deep links. Do not invent admin or billing routes.

Make your first request

A working curl example and its response.

Connect an MCP client

Discovery, authorization, and the REST-to-tool map.

Authenticate your integration

Clerk OAuth, bearer tokens, and browser sessions.

Build a design workflow

Create projects and blocks with Arazzo journeys.

API reference

Explore request parameters, response schemas, and examples from the live OpenAPI contract.

Open the API reference