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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 v2.1.227

Tool-search results no longer show a render error

You'll notice
Useful3 Signal1
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Search tool results no longer print "Unable to render" errors in your transcript.

What

Search-tool result blocks and two search variants used by the model now render as nothing instead of producing "Unable to render server tool block" or "Unable to render message type" errors in the transcript.

Evidence

tool_search_tool_bm25

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 v2.1.227 →