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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 v2.0.70

MCPSearch Tool

What: A new tool that allows Claude to search and load MCP (Model Context Protocol) tools before using them, improving reliability of MCP integrations.

How to use: MCP tools are now deferred and must be loaded via MCPSearch before use. Claude will automatically use this tool when you request MCP functionality.

Details:

  • Supports two query modes: direct selection (select:mcp__slack__read_channel) or keyword search
  • Returns up to 5 matching tools ranked by relevance
  • Caches tool descriptions for faster subsequent searches
  • Returns tool_reference content blocks that make selected tools available
  • Evidence: MCPSearchTool implementation at Ey2 variable, line 454185; tool name Gy2 = "MCPSearch" at line 454099

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 v2.0.70 →