Under the hood
Sub-task handoff now carries forward token, tool-use, and duration stats
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.