userInput/cancel

Declines an open user-input prompt; the tool call resolves with a cancelled result the model sees.

Parameters

Type: UserInputCancelParams

userInput/cancel params: decline to answer; the tool call resolves with a cancelled result the model sees.

Field	Type	Stability	Presence	Description
commandId	string		required	The idempotency handle (UUIDv7).
reason	string		optional	Why the prompt was declined.
sessionId	string		required	The target session.
userInputId	string		required	The prompt being declined.

Source

schema/msp/experimental/msp.schema.json#/methods/userInput~2Fcancel

{
  "description": "Declines an open user-input prompt; the tool call resolves with a cancelled result the model sees.",
  "params": {
    "$ref": "#/$defs/UserInputCancelParams"
  },
  "result": {
    "$ref": "#/$defs/UserInputCancelResult"
  }
}