OpenAPI or Swagger → hosted MCP

SourceMCP turns an OpenAPI 3.x or Swagger 2.0 spec into a hosted MCP server. You pick the operations that become tools; AI clients call your real API through one Streamable HTTP URL. No custom MCP server to build, host or secure.

What you get

1. Upload a JSON/YAML file or paste a URL to the spec.
2. Curate endpoints (and rename tools so models pick the right ones).
3. Set the upstream base URL and credentials (encrypted, write-only).
4. Connect Claude, Cursor, VS Code or ChatGPT with an API key or OAuth.

Limits and quotas: Limits. How auth works: API keys and OAuth.

Steps

Follow the Quickstart. Prefer a smaller set of well-described tools over enabling every path in a large API.

Connect a client

• Cursor
• Claude
• VS Code
• All clients

Related

• Postman → MCP if your collection is in Postman instead of OpenAPI