core.fsmonitor
A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
Stray git environment variables in your shell can no longer misdirect worktree operations.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.222.
In the changelogs
3Releases whose published page names core.fsmonitor.
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v2.1.247
Every git command now runs with hooks, filesystem monitors and prompt helpers disabled
Every git command Claude runs now has hooks, filesystem monitors and prompt helpers turned off.
named in this entry, found in this entry's text
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v2.1.222
Worktree git commands run with a scrubbed git environment
Stray git environment variables in your shell can no longer misdirect worktree operations.
found in this entry's text
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v2.1.179
Git Log Isolated from Local Hooks and fsmonitor
found in this entry's text
First cited
1The earliest release whose published evidence quoted core.fsmonitor was v2.1.179, 16 Jun 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 settings key does. All settings keys.