CLAUDE_CODE_COZY_TEAPOT

A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.260, including the newest one read.

Releases whose published page names CLAUDE_CODE_COZY_TEAPOT.

1. v2.1.274 16 Sep 2026
   New bash-first prompt steer variant experiment slot

   A new bashFirstSteerVariant experiment slot was added, gated by tengu_cozy_teapot and overridable via CLAUDE_CODE_COZY_TEAPOT

   named in this entry, found in this entry's text

2. v2.1.260 3 Sep 2026
   Auto-mode 'bash-first' system-prompt wording is A/B'd behind a remote gate, falling back to the strict wording

   A remotely gated A/B test can loosen the bash-first system prompt wording.

   found in this entry's text, named in this entry

3. v2.1.260 3 Sep 2026
   New 'bash-first steer' strictness setting (cozy teapot)

   An unreleased-sounding env var controls how strictly auto mode steers you toward bash.

   found in this entry's text, named in this entry

The earliest release whose published evidence quoted CLAUDE_CODE_COZY_TEAPOT was v2.1.260, 3 Sep 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.

One 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.