CLAUDE_CODE_EVAL_
A Claude Code environment variable, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
An env var turns on the tool that proposes new skills; otherwise it stays off in this build.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.233.
In the changelogs
3Releases whose published page names CLAUDE_CODE_EVAL_.
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v2.1.233
CLAUDE_CODE_SKILL_PROPOSALSturns on the skill-proposal toolAn env var turns on the tool that proposes new skills; otherwise it stays off in this build.
named in this entry
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v2.1.233
Eval report publishing announces itself and is skipped inside interview runs
Eval report publishing now announces itself, and nested interview runs no longer each publish.
named in this entry
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v2.1.233
Two more variables recognised when building subprocess environments
Two more Claude-owned variables are handled when building environments for subprocesses.
named in this entry
First cited
0No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
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 environment variable does. All environment variables.