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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 v2.1.236

Agent toolset config entries are now typed per tool

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Useful2 Signal2
SDK

Agent toolset config entries now use a typed shape per tool, affecting typed-language SDK callers.

configstype
What

Each entry in an agent toolset's configs array is now one of eight per-tool shapes, picked by a type field that appears in responses even when you omit it in requests. Dict-based SDKs (Python, TypeScript, Ruby) are unaffected; Go, Java, C#, and PHP callers must build entries from the per-tool types.

Details
  • MCP toolset configs entries deliberately do not gain type or the web settings.
Evidence

Code written against an SDK where all tools shared one config type must update how it constructs entries.

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 v2.1.236 →