Source Intelligence

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.

All of v2.1.233 Home All releases olderv2.1.232 v2.1.234newer
Claude Code v2.1.233

CLAUDE_CODE_SKILL_PROPOSALS turns on the skill-proposal tool

Use it now
Useful3 Signal4
Skills Notable not in their notes

An env var turns on the tool that proposes new skills; otherwise it stays off in this build.

The skill-proposal tool is present but needs CLAUDE_CODE_SKILL_PROPOSALS, since its flag defaults off.

Feature flag
tengu_propose_skills Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.233: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.233. It isn't a statement about your account. What a flag value here can and cannot tell you

CLAUDE_CODE_SKILL_PROPOSALSCLAUDE_CODE_EVAL_CLAUDE_CODE_EVAL_INTERVIEW_SESSION
What

Setting CLAUDE_CODE_SKILL_PROPOSALS enables the tool that proposes new skills on its own. Otherwise it needs the tengu_propose_skills flag, which is off by default in this build, plus a remote environment. The variable is also passed down to child and plugin processes.

Details
  • CLAUDE_CODE_EVAL_INTERVIEW_SESSION is now stripped from the environment given to spawned processes, alongside the other session markers.
Evidence

CLAUDE_CODE_SKILL_PROPOSALS

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.233 →