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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 v2.1.229 12 Aug 2026

Two animals swapped in the session name word list

You'll notice

Useful1 Signal0

Sessions

New sessions can now be named after a bird or a mollusc instead of two former animals.

What

The word list used to generate memorable session names replaced one mammal and one cetacean with a bird and a mollusc. Only affects names generated from now on.

Evidence

nautilus

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

See this entry in the whole of v2.1.229 →