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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.

All of v2.1.198 Home All releases olderv2.1.197 v2.1.199newer

MCP Per-Server HTTP Request Timeout

What

MCP server configurations now support a request_timeout_ms field that raises the per-request fetch deadline and the tool-call watchdog for that specific server.

Details
  • Set by the host via mcp_set_servers control event; not a user-editable field in .claude/settings.json
  • Capped at 5 minutes
  • Applies to both stdio and SSE server types
  • Overridden if timeout is also set on the server
Evidence

Schema description (search for "Per-server HTTP request timeout in milliseconds, set by the host on the mcp_set_servers control event")

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

See this entry in the whole of v2.1.198 →