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Call the MCP server

POST 
/mcp

Streamable HTTP transport for the Model Context Protocol, in stateless mode: one JSON-RPC 2.0 request in, one response out. There is no session id and no SSE stream, so any request can be served by any worker.

The account is never in the URL — it is resolved from the API key — so an external AI client only ever configures this single endpoint. The server has to be enabled for the account (mcp_server feature) and the key has to belong to a user who is still a member of it.

Implemented methods: initialize, ping, tools/list and tools/call. Protocol versions accepted: 2025-06-18, 2025-03-26 and 2024-11-05.

Request​

Responses​

JSON-RPC response. A protocol failure lands here too, carrying error instead of result — that is what JSON-RPC asks for.