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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 v2.1.119 23 Apr 2026

Improved Zod Schema Support

Added support for Zod Mini (ZodMiniType, ZodMiniObject) alongside existing Zod schemas, with automatic detection and mixed-version handling. The system now throws a clear error on mixed versions: "Mixed Zod versions detected in object shape."

Evidence

Zod Mini support (search for "ZodMiniType", "ZodMiniObject", "Mixed Zod versions")

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

See this entry in the whole of v2.1.119 →