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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.319 ·

Subagents may skip some MCP servers that fail a connection check

Before a subagent connects to certain MCP servers, Claude Code now runs a check and skips the server with a warning if it fails

You'll notice Improvements
JSON All of v2.1.319
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SubagentsArea: what it touches
ImprovementsKind: in v2.1.319,
ImprovementsSection of the release

Unclear Which kinds of MCP server get this check is not settled.

What

Before a subagent (a helper copy of Claude given part of a task) connects to certain kinds of MCP server, Claude Code now runs a connection check first. MCP servers are outside tools Claude can use. If the check fails, the server is skipped and a warning says which server was skipped.

Why

This is a new reason an MCP server may be unavailable inside a subagent, so a skipped-server warning is worth looking for if a tool is missing there.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhich kinds of MCP server get this check is not settled.

See this entry in the whole of v2.1.319 →

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