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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 v2.1.122 Home All releases olderv2.1.121 v2.1.123newer
Claude Code v2.1.122

Web Search Isolation Exemption for MCP Servers

What

Adds a new webSearchIsolationExemptMcpServers init config field that lets specific MCP servers bypass the web search / connector isolation latch.

Details
  • Accepts an array of MCP server names
  • These servers are unioned with the built-in infrastructure server list, so they remain accessible even when the isolation latch is engaged
  • Marked as @internal — intended for SDK/API integrators, not end-user configuration
Evidence

New schema field (search for "webSearchIsolationExemptMcpServers")

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

See this entry in the whole of v2.1.122 →