This capability is not part of the spec yet, and may be removed or changed at any point.
The Agent cannot currently determine foreground activity.
Report this when activity becomes unobservable, not merely because the child
has been quiet. The Client MUST stop presenting the previous state as confirmed
current activity, but may retain it as last known. A later state replaces this
snapshot normally.
This is not a task outcome or session closure. It does not cancel work, resolve
pending requests, or revoke capabilities; capabilities are updated separately.
The _meta property is reserved by ACP for additional metadata.
Implementations MUST NOT make assumptions about values at these keys.
Optional; omitted and null mean no metadata for this state snapshot.
UNSTABLE
This capability is not part of the spec yet, and may be removed or changed at any point.
The Agent cannot currently determine foreground activity.
Report this when activity becomes unobservable, not merely because the child has been quiet. The Client MUST stop presenting the previous state as confirmed current activity, but may retain it as last known. A later state replaces this snapshot normally.
This is not a task outcome or session closure. It does not cancel work, resolve pending requests, or revoke capabilities; capabilities are updated separately.