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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 v2.1.196 ·

Prompt ID in Hook Events

Entry
JSON All of v2.1.196
EntryKind: in v2.1.196,
ImprovementsSection of the release

Hook events now carry a prompt_id field: a UUID that correlates all events generated within a single user prompt turn. The same value appears as the prompt.id attribute on OpenTelemetry events, allowing hook output to be joined with OTel traces at prompt granularity.

Details
  • Absent until the first user input of the process lifetime.
  • Consistent across tool calls, notifications, and other events triggered by the same prompt.
Evidence

New hook field (search for "UUID correlating a user prompt with all subsequent events until the next prompt")

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

See this entry in the whole of v2.1.196 →

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