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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.63 ·

SubagentStart / SubagentStop Hook Event Descriptions

Entry
JSON All of v2.1.63
EntryKind: in v2.1.63,
ChangesSection of the release

The SubagentStart and SubagentStop hook event descriptions have been updated from "Task tool call" to "Agent tool call" to match the Task→Agent rename. The events themselves are unchanged.

Evidence

Hook event descriptions (search for "subagent (Agent tool call)")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.63 →

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