Per-call context of an MCP request. signal aborts when the client sends notifications/cancelled (the SDK then sends no response); progress is set only when the client asked for progress with a progressToken.
signal
notifications/cancelled
progress
progressToken
Optional
Sends progress notifications; set only with a progressToken.
Aborted when the client cancels the request.
Per-call context of an MCP request.
signalaborts when the client sendsnotifications/cancelled(the SDK then sends no response);progressis set only when the client asked for progress with aprogressToken.