FastestMCP.Client.ProtocolError exception (fastest_mcp v0.2.0)

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Raised when a connected peer returns a syntactically valid JSON-RPC message that does not satisfy the negotiated MCP method schema.

The offending payload is deliberately not retained: responses can contain credentials or user data. violations contains the bounded JSON-Schema diagnostics produced by FastestMCP.Schema.

Summary

Types

t()

Types

t()

@type t() :: %FastestMCP.Client.ProtocolError{
  __exception__: term(),
  direction: :client_to_server | :server_to_client,
  errors: [map()],
  kind: :request | :notification | :response | :task_response,
  message: String.t(),
  method: String.t(),
  request_id: String.t() | integer() | nil,
  violations: [map()]
}