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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

CCR_ON_BRANCH_DEFAULT_GUARD

A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.208, including the newest one read.

What it is

Nobody has written a line about this one. It is not in any of Anthropic's reference tables and no changelog entry here carries a description of it. It is in the build, which is the whole of what this page can claim.

Presence across releases

ReleasesReadingDeclared typeDefault
2.1.245 – 2.1.250 5 releases never mined — —
2.1.208 – 2.1.243 35 releases in the build enum —

A row reading never mined is a release with no archived bundle behind it. Nothing was read out of it, so nothing here says whether the name was in it. A declared type or a default is only ever what that release's own bundle stated.

Changelog entries naming it

No changelog entry here has ever named it. That is a statement about what has been written, not about the name: it has been in the build since v2.1.208 without anybody writing a line about it.

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 ccr, up to twelve of them.

CCR_AGENT_PROXY_ENABLEDNo description from anybody. 2.1.163 CCR_AGENT_PROXY_FRAME_HOSTSArtifact traffic can take a direct tunnel when the runner environment names hosts; local runs keep the old route. never mined CCR_AGENT_PROXY_INCLUDE_HOSTSNo description from anybody. 2.1.216 CCR_AGENT_PROXY_RECEIVE_GATE_DISABLEDThe remote agent proxy now caps stalled uploads and reads, with two env vars to disable each. never mined CCR_AGENT_PROXY_RELAY_MODENo description from anybody. 2.1.216 CCR_AGENT_PROXY_UPLOAD_GATE_DISABLEDThe remote agent proxy now caps stalled uploads and reads, with two env vars to disable each. never mined CCR_DELTA_RESETTwo env vars change how runner git fetches handle retries and stalled delta resolution. never mined CCR_EGRESS_GATEWAY_ENABLEDNo description from anybody. 2.1.138 CCR_ENABLE_BUNDLECloud sync sizes up your repo first and always tells you why it declined; bundle upload is server-gated. 2.1.138 CCR_FORCE_BUNDLESet to 1 to force [claude --cloud](/docs/en/claude-code-on-the-web#send-local-repositories-without-github) to bundle and upload your local repository even when GitHub access is available 2.1.138 CCR_RUNNER_STARTUP_TIMINGOn remote runs, startup timings can be supplied by the runner through an environment variable. never mined CCR_SHR_SSE_HINTSThe runner can hold a live server connection and wake instantly on work, but it defaults off. 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.