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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
Home / Reference / Hook events

StopFailure

hook never mined documented JSON

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.

When the turn ends due to an API error

Anthropic's own wording. Read off Hooks reference, captured 2026-10-22.

First seen — never in a mined build
Last seen — never in a mined build
Builds0 / 149on this box, as of v2.1.308
Written about v2.1.78 first named in a changelog, 17 Mar 2026

In the changelogs

5

Releases whose published page names StopFailure.

  1. v2.1.246
    Hooks are looked up through a per-session registry, not app state

    Hooks are looked up per session rather than from global state; your hooks fire the same.

    found in this entry's text

  2. v2.1.246
    Tool subprocesses can be launched inside a memory-capped cgroup

    MCP servers, hooks, plugin installs and tmux sessions can run under a memory cap, dark-launched here.

    found in this entry's text

  3. v2.1.235
    Account-on-hold handling is built end-to-end but dark behind tengu_lively_beaver (fallback: off)

    A full account-on-hold sign-in flow was added but stays unreachable pending a server-side gate

    found in this entry's text

  4. v2.1.229
    Hooks are handed a session object instead of reading globals

    Hooks now get an explicit session with id, working directory and project root instead of guessing from globals.

    found in this entry's text

  5. v2.1.78
    StopFailure Hook Event

    found in this entry's text

First cited

1

The earliest release whose published evidence quoted StopFailure was v2.1.246, 25 Aug 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.

ReleaseDateThe span that was quoted
v2.1.24625 Aug 2026hook_event_name: "StopFailure"

Presence across releases

0

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.

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.

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