ConfigChange
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 a configuration file changes during a session
Anthropic's own wording. Read off Hooks reference, captured 2026-10-22.
In the changelogs
6Releases whose published page names ConfigChange.
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v2.1.288
The path for reapplying settings changes after a ConfigChange hook was removed
Claude Code no longer has its separate step that ran ConfigChange hooks and then reloaded a changed settings file
found in this entry's text, named in this entry
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v2.1.287
Held settings changes can be accepted or discarded, including for cloud sessions
Settings edits Claude made without your approval are held for you to accept, discard or leave, and cloud sessions use only accepted versions
found in this entry's text
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v2.1.277
Plugin-dir file watcher with adaptive polling and ConfigChange hook gate
Plugin skill directories now get watched for changes, with adaptive polling and a ConfigChange hook gate
found in this entry's text
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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
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v2.1.48
HTTP Hooks
found in this entry's text
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v2.1.48
ConfigChange Hook Event
found in this entry's text
First cited
3The earliest release whose published evidence quoted ConfigChange was v2.1.277, 18 Sep 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.
Presence across releases
0The 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.