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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.246 ·

MCP servers that dropped before wiring now reconnect

An MCP server that dropped before reconnect wiring finished now reconnects right away.

You'll notice Bug Fixes
JSON All of v2.1.246
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
Bug FixesKind: in v2.1.246,
Bug FixesSection of the release
What

If an MCP server's connection had already closed by the time the reconnect handler was attached, the reconnect is now scheduled immediately instead of waiting for a close event that will never arrive.

Details
  • The log line distinguishes a transport that closed later from one that "had already closed when wired".
  • Reconnects now emit telemetry: success with the attempt count and whether it was found already closed, and failure as either needs_auth or exhausted once the attempt cap is reached.
Evidence

had already closed when wired

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

See this entry in the whole of v2.1.246 →

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