CLAUDE_RUNNER_OFFERS_NEW_MACHINE
A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.319, including the newest one read.
CLAUDE_CODE_COWORK_PLUGIN_SKILL and CLAUDE_RUNNER_OFFERS_NEW_MACHINE now appear on lists of variables Claude Code passes along
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.319.
In the changelogs
2Releases whose published page names CLAUDE_RUNNER_OFFERS_NEW_MACHINE.
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v2.1.319
Two new environment variable names appear on Claude Code's pass-through lists
CLAUDE_CODE_COWORK_PLUGIN_SKILLandCLAUDE_RUNNER_OFFERS_NEW_MACHINEnow appear on lists of variables Claude Code passes alongfound in this entry's text
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v2.1.319
Self-hosted runner sessions get new variables for machines and feature flags
Self-hosted runner sessions now receive
CLAUDE_RUNNER_OFFERS_NEW_MACHINEandCLAUDE_CODE_DISABLE_FEATURE_FLAGS, andDISABLE_GROWTHBOOKis worked outfound in this entry's text
First cited
1The earliest release whose published evidence quoted CLAUDE_RUNNER_OFFERS_NEW_MACHINE was v2.1.319, 6 Nov 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
1Build by build
1One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
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.