Connect Claude Code to tools via MCP changedmcp
Nearest release: v2.1.287, published 20 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 2 Oct 2026 13:29 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 2 Oct 2026 13:37 UTC.
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301301With tool search enabled, when a server finishes connecting while Claude is working, Claude Code lists the server's tool names to Claude on its next request in the same turn. Claude can then search for and call those tools without waiting for your next message.
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303After you resume a session, Claude can call a tool from the saved conversation while the tool's MCP server is still connecting. While the server is on its first connection attempt, Claude Code holds the call for up to 10 seconds and runs it once the tool is available. If the server doesn't connect in time, or it is already [retrying after a failed attempt](#automatic-reconnection), the call fails with the `No such tool available` [tool error](/docs/en/errors#no-such-tool-available).
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303305### Disable a server without removing it
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305307Toggle a server off in the `/mcp` panel to stop Claude Code from connecting to it without losing its configuration. Claude Code still lists the server in `/mcp`, marked as disabled.
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