ID of the node that spawned the subagent
toolUseId of the owning SubagentStarted event
Name of the tool the subagent called
Arguments of that call, as a JSON string
Status of that call: running / succeeded / failed
Duration of that call in milliseconds
The subagent's internal round number
Start time, Unix timestamp in seconds
Payload of a
subagent_progressstream event, emitted every time the subagent calls one of its own tools. Use it to render a live timeline inside the subagent card.