scan_handoffs
Pass the tasks your agents handed each other (e.g. the result of Offhand list_todos) and get back which are stalled or failing and what to do. A task is stalled when it is claimed (in_progress) or handed over but untouched for stall_minutes, and failing when it is blocked or has failed fail_limit times. Ladder: nudge the assignee, nudge again, then reassign to a backup agent (or ask the person). Pro acts: records each nudge with a cooldown so nobody is pinged twice, and POSTs the nudge to the agent's webhook if you give one. Free watch-only takes no action and returns would_nudge / would_reassign. It never changes a task in Offhand itself and never takes a task another agent holds; reassigning returns an Offhand add_task call for your agent to make.
boardtasksrequiredwebhooksfail_limitbackup_agentstall_minutesnudges_before_reassign