requireVersion
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.
Artifact database writes gain optional version-conflict protection, with automatic fallback if unsupported
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.269.
In the changelogs
3Releases whose published page names requireVersion.
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v2.1.269
Artifact-DB writes gain optional optimistic-concurrency (requireVersion) support with per-server fallback
Artifact database writes gain optional version-conflict protection, with automatic fallback if unsupported
found in this entry's text
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v2.1.269
Artifact str_replace writes gated behind a new require-version check, off by default
Artifact edits can now require a version match before writing, gated off by default
found in this entry's text
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v2.1.269
Artifact writes now request version enforcement (requireVersion)
Artifact writes now enforce version checks to prevent overwriting newer versions
named in this entry, found in this entry's text
First cited
2The earliest release whose published evidence quoted requireVersion was v2.1.269, 11 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 settings key does. All settings keys.