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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 v2.1.248

Several tool definitions moved out of deferred initializers

Under the hood
Useful1 Signal0
Startup

Several tool definitions are now built at load time; nothing behaves differently.

What

The feedback draft, memory read, multiple-choice question, DesignSync and Claude Design tools are now defined at the top level rather than built on first use. Schemas, prompts and messages are unchanged.

Evidence

This call included a question with fewer than 2 options, so it was rejected and the person never saw it.

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 v2.1.248 →