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MCP Router: maxRequestBodyBytes

maxRequestBodyBytes limits the complete MCP HTTP request body.

  • Type: Positive integer, in bytes
  • Default: 1048576 (1 MiB)

The gateway reads the request through a bounded buffer before JSON parsing. A larger body is rejected with HTTP 413 and JSON-RPC code -32600. Compressed request bodies are rejected by the gateway’s MCP path, so this budget applies to the bytes actually received as the JSON request body.