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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 v2.1.239

Session effort becomes a tagged value

Under the hood
Useful1 Signal2
Effort

Effort is stored as a tagged object, and the effort setting is cleared when no specific level applies.

--effort
What

The session's effort setting is now an object with a kind rather than a bare string. Metadata reports an effort level only when the kind is a level, and the --effort setting is cleared for any other kind.

Details
  • Permission-mode transitions build their metadata through a rule-based helper.
  • When the notifier reports worker permission-mode recording as enabled, transitions additionally record the worker's permission mode as internal metadata.
Evidence

worker_permission_mode

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 v2.1.239 →