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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 v2.1.83

MCP Tool Search Hints via anthropic/searchHint

MCP servers can now provide search hints through the anthropic/searchHint metadata field on tool definitions. These hints help Claude find and select the right tools more effectively by providing natural-language descriptions of when to use each tool.

Evidence

MCP search hints (search for "anthropic/searchHint")

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

See this entry in the whole of v2.1.83 →