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HomeDocsClaude Code CLI 24 Oct 2026
One change · claude-code

Connect Claude Code to tools via MCP changedmcp

Nearest release: v2.1.310, published 16 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 24 Oct 2026 13:59 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 24 Oct 2026 14:07 UTC.

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First seen 14 Aug 2026 this site's first read of the page
Recorded edits92to this page, all time

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380380Those retries don't apply in these cases:
381381 
382382* A stdio server's first connection. To try it again, see [Stdio servers that exit or fail to start](#stdio-servers-that-exit-or-fail-to-start)
383* A WebSocket server's first connection
383* A WebSocket server's first connection. To try it again in an interactive terminal session, select **Reconnect** from the server's menu in `/mcp`
384384* An authentication or not-found error, because it requires a configuration change to resolve. When a [`headersHelper`](#use-dynamic-headers-for-custom-authentication) is the server's only source of the `Authorization` header, Claude Code retries an authentication error anyway, because it re-runs the helper on each attempt and can pick up a fresh credential
385385 
386386#### Stdio servers that exit or fail to start
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399399 
400400#### Retry failed servers yourself
401401 
402To retry every server that failed or needs authentication, run `/mcp reconnect all`. In the interactive terminal this requires Claude Code v2.1.284 or later, and earlier versions print `MCP server "all" not found` there.
402To retry every server that failed or needs authentication, run `/mcp reconnect all` at the Claude Code prompt in an interactive terminal session. This requires Claude Code v2.1.284 or later. Earlier versions print `MCP server "all" not found`.
403403 
404404#### How Claude learns that a server failed
405405 
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