Class ServerMessageMetadata

src/mcp/shared/message.py:32–43

Metadata specific to server messages.

@dataclass
class ServerMessageMetadata:
    """Metadata specific to server messages."""

    related_request_id: RequestId | None = None
    # Transport-specific request context (e.g. starlette Request for HTTP
    # transports, None for stdio). Typed as Any because the server layer is
    # transport-agnostic.
    request_context: Any = None
    # Callback to close SSE stream for the current request without terminating
    close_sse_stream: CloseSSEStreamCallback | None = None
    # Callback to close the standalone GET SSE stream (for unsolicited notifications)
    close_standalone_sse_stream: CloseSSEStreamCallback | None = None


MessageMetadata = ClientMessageMetadata | ServerMessageMetadata | None