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Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.251 Feeds RSS JSON llms.txt
Reading a new release v2.1.251 Analysing changes · 2/5 Deeper second pass · 0/5 agents 427 findings $12.75 so far

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Reference / Hook events

SessionEnd

A Claude Code hook event, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

What it is

When a session terminates

Anthropic's own wording. Read off Hooks reference, captured 2026-08-28.

Presence across releases

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Changelog entries naming it

  1. v2.1.236Hooks and Ctrl-C go quiet once shutdown has started

    Once you quit, hooks stop firing except SessionEnd and Ctrl-C no longer aborts the request.

    named in this entry

  2. v2.1.236Shutdown seals transcript writes and gives SessionEnd hooks more time

    SessionEnd hooks get five seconds instead of 3.5, and the transcript is sealed at exit.

    named in this entry

  3. v2.1.234SessionEnd hooks lose the bypass_permissions_disabled reason

    SessionEnd hooks no longer see a bypass_permissions_disabled reason, since nothing can end your session that way.

    named in this entry

Documentation pages

A reference table page is one whose own table defines this name, and it is where the description above came from. A page that mentions it carries the name somewhere in its text and may say nothing about it at all. Every page carrying it.

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the hook event does. All hook events.