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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.

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Claude Code v2.1.242

Effort display names ultracode and warns about the environment override

Use it now
Useful4 Signal4
Effort Notable

The effort line lists ultracode and warns when your environment variable is overriding your choice.

CLAUDE_CODE_EFFORT_LEVEL
What

The effort line now shows "ultracode" as a level, says when an effort setting applies to the current session only, and warns when CLAUDE_CODE_EFFORT_LEVEL in your environment is overriding the effort you chose, telling you to clear it.

Details
  • The override clause appears only when that environment variable is set.
Evidence

overrides effort this session; clear it and

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 v2.1.242 →