task/readTail

Experimental

Reads the latest output of one running background command, at most 128 KiB from the host runtime’s retained tail, so a follow view keeps showing output past the 64 KiB streamed budget (ADR 70076 D1).

Parameters

Type: TaskReadTailParams

task/readTail params (ADR 70076 D1, experimental): the latest output of one running background command, read from the host runtime’s retained tail. A read-only query in the task/list mold: no commandId, no durable record, no view event.

Field	Type	Stability	Presence	Description
sessionId	string	Experimental	required	The target session.
taskId	string	Experimental	required	The task: a task/list row’s taskId, which for a command is its toolCall item’s itemId.

Source

schema/msp/experimental/msp.schema.json#/methods/task~2FreadTail

{
  "description": "Reads the latest output of one running background command, at most 128 KiB from the host runtime's retained tail, so a follow view keeps showing output past the 64 KiB streamed budget (ADR 70076 D1).",
  "params": {
    "$ref": "#/$defs/TaskReadTailParams"
  },
  "result": {
    "$ref": "#/$defs/TaskReadTailResult"
  },
  "x-msp-descriptor": "task/readTail",
  "x-msp-stability": "experimental"
}