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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_RUNNER_FAIL_FAST_FETCH

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

Two env vars change how runner git fetches handle retries and stalled delta resolution.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.224.

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. v2.1.224Two environment knobs for runner git fetches

    Two env vars change how runner git fetches handle retries and stalled delta resolution.

    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_runner, up to twelve of them.

CLAUDE_RUNNER_ACTIVITY_FDNo description from anybody. 2.1.196 CLAUDE_RUNNER_CLAUDE_BINThe runner writes a code-sign helper script, using CLAUDE_RUNNER_CLAUDE_BIN if you set it. never mined CLAUDE_RUNNER_CLIENT_PLATFORMOdd platform labels from the runner are rejected or replaced with "unknown" instead of exported. never mined CLAUDE_RUNNER_DISABLE_AWAITING_ACTION_OVERRIDENo description from anybody. 2.1.200 CLAUDE_RUNNER_FETCH_DEPTHFull git checkout machinery for self-hosted runners now ships, but you cannot reach it interactively. 2.1.172 CLAUDE_RUNNER_SESSION_UUIDRunner hooks now get CLAUDE_RUNNER_SESSION_UUID and CLAUDE_CODE_REMOTE_SESSION_UUID so your scripts can key on the session. never mined CLAUDE_RUNNER_SKIP_GIT_VERIFYNo description from anybody. 2.1.224 CLAUDE_RUNNER_USE_GIT_PROXYNo description from anybody. 2.1.224

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.