ClosedMCP API
The ClosedMCP API reference documents a single remote Model Context Protocol endpoint (POST /mcp for initialize, tools/list and tools/call, GET /mcp for a tool-change event stream) authenticated with a bearer access token, plus the OAuth sign-in flow (POST /oauth/register, GET/POST /oauth/authorize, POST /oauth/token, the oauth-authorization-server and oauth-protected-resource discovery documents) and a JWKS at /.well-known/jwks.json for verifying tool identity. The docs state base URL https://closedmcp.com ("Use your company's address if it differs"). No OpenAPI, AsyncAPI or GraphQL contract is published.