turn/steer

Injects input into the turn the caller names, failing if that turn is no longer active.

Parameters

Type: TurnSteerParams

turn/steer params: exact-target steering into the currently running turn.

Field	Type	Stability	Presence	Description
commandId	string		required	The idempotency handle (UUIDv7).
expectedTurnId	string		required	The turn you believe is running. Closes the race where the turn completes or is replaced between your read and your steer: input meant for turn A can never leak into turn B. Any syntactically valid UUID: a turn from an older session may carry a v4 or v5 id. A malformed id is invalidParams; an id that is not the running turn is refused.
input	TurnInputPart[]		required	Same content parts as turn/start.
reasoningEffort	ReasoningEffort		optional	Reasoning tier for the model calls this steer’s input reaches. Applies forward, never backward; absent means unspecified, not “reset”.
sessionId	string		required	The target session.
tokenBudget	integer	Experimental	optional	This steer’s token budget in tokens. Same vocabulary as the turn/start member: an integer floor of 1, omitted means unspecified (never a reset of the running turn’s budget), 0 or a non-integer is invalid params, as is explicit null. Experimental like its twin: v1 membership stays open, so the member ships off the stable bundle until a v1 ruling graduates it.

Source

schema/msp/experimental/msp.schema.json#/methods/turn~2Fsteer

{
  "description": "Injects input into the turn the caller names, failing if that turn is no longer active.",
  "params": {
    "$ref": "#/$defs/TurnSteerParams"
  },
  "result": {
    "$ref": "#/$defs/TurnSteerResult"
  }
}