Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Agent ToolArea: what it touches
Internal ChangesKind: in v2.1.280,
Internal ChangesSection of the release
What
When Claude Code spawns or hands off a sub-task to another agent, the payload sent now includes a usage object with totalTokens, toolUses, and durationMs, in addition to the existing agentId, priority, and taskId fields.
Why
This carries usage statistics along with a delegated task, making it possible to track token consumption, tool use, and time spent as work moves between agents.