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Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Reference / Environment variables

CLAUDE_CODE_HANDBACK_PROVENANCE

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.

What it is

Subagent reports can be wrapped so embedded instructions cannot pass as your commands, off here.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.242.

Presence across releases

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.

Changelog entries naming it

  1. v2.1.242Subagent reports get an anti-injection wrapper, switched off in this build

    Subagent reports can be wrapped so embedded instructions cannot pass as your commands, off here.

    named in this entry

Documentation pages

None of Anthropic's documentation pages this site has a copy of carries this name.

Names beside it

Every environment variable in the inventory starting claude_code, up to twelve of them.

CLAUDE_CODE_3P_PROBE_WROTE_OPUS_DEFAULTNo description from anybody. 2.1.207 CLAUDE_CODE_3P_PROBE_WROTE_SONNET_DEFAULTNo description from anybody. 2.1.207 CLAUDE_CODE_ACCESSIBILITYSet to 1 to keep the native terminal cursor visible and disable the inverted-text cursor indicator. Allows screen magnifiers like macOS Zoom to track cursor position 2.1.138 CLAUDE_CODE_ACCOUNT_TAGGED_IDNo description from anybody. 2.1.138 CLAUDE_CODE_ACCOUNT_UUIDThe device bridge is skipped entirely when the host's account UUID doesn't match the stored one. 2.1.138 CLAUDE_CODE_ACT_DONT_REDERIVEThree existing feature gates moved position; their defaults are unchanged. 2.1.162 CLAUDE_CODE_ACTIONNo description from anybody. 2.1.138 CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MDSet to 1 to load memory files from directories specified with --add-dir. Loads CLAUDE.md, .claude/CLAUDE.md, .claude/rules/*.md, and CLAUDE.local.md. By default, additional directories do not load memory files 2.1.138 CLAUDE_CODE_ADDITIONAL_PROTECTIONNo description from anybody. 2.1.138 CLAUDE_CODE_ADOPT_UNDERIVABLE_PARKED_PERMISSIONA resumed headless session could hand you back a permission prompt left unanswered, but three variables must be set. 2.1.238 CLAUDE_CODE_AGENTNo description from anybody. 2.1.138 CLAUDE_CODE_AGENT_COST_STEERNo description from anybody. 2.1.138

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.