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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 6 Oct 2026
One change · claude-code

Hooks reference changedhooks

Nearest release: v2.1.291, published 2 hours after upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 6 Oct 2026 01:08 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 6 Oct 2026 01:37 UTC.

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From line 724 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits112to this page, all time

The whole hunk

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724724| Field | Description |
725725| :- | :- |
726726| `session_id` | Current session identifier |
727| `prompt_id` | UUID identifying the user prompt currently being processed. Matches the [`prompt.id` attribute on OpenTelemetry events](/docs/en/monitoring-usage#event-correlation-attributes), so you can correlate hook output with telemetry for a single prompt. Absent until the first user input. Requires Claude Code v2.1.196 or later |
727| `prompt_id` | UUID identifying the user prompt currently being processed. Matches the [`prompt.id` attribute on OpenTelemetry events](/docs/en/monitoring-usage#event-correlation-attributes), so you can correlate hook output with telemetry for a single prompt. Absent until the first user input |
728728| `transcript_path` | Path to conversation JSON. The transcript file is written asynchronously and may lag the in-memory conversation, so it may not yet include the current turn's most recent messages when a hook fires. Hooks that need the final assistant text of the current turn should use `last_assistant_message` on [Stop](#stop) and [SubagentStop](#subagentstop) instead of reading the transcript |
729729| `cwd` | Current working directory when the hook is invoked |
730730| `scratchpad_dir` | Path to the session's [scratchpad directory](/docs/en/claude-directory#session-scratchpad-directory), where Claude keeps temporary working files. Absent when the session has no scratchpad or the temp directory is unavailable. Requires Claude Code v2.1.257 or later |
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