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Sweep 30 Oct 2026 · 01:02Z Build v2.1.314 532 read Stable v2.1.308 Latest v2.1.314 Next v2.1.314 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.314 ·

Claude Code records when an MCP server cannot be reached during a tool call

When an MCP tool call fails because the server behind it cannot be reached, Claude Code now logs a warning

Under the hood Internal Changes
JSON All of v2.1.314
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.314,
Internal ChangesSection of the release
What

MCP servers are outside programs that give Claude extra tools. When a call to one of these tools fails because the server behind it cannot be reached, Claude Code now logs a warning for its usage data. Claude Code also now marks a tool call as running when it starts it.

Why

This is for usage data only and does not change what you see.

See this entry in the whole of v2.1.314 →

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