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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 v2.1.248 ·

MCP reconnect failures show a readable message

Headless MCP reconnect failures show a readable message instead of a raw client error.

You'll notice Improvements
JSON All of v2.1.248
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.248,
ImprovementsSection of the release
What

When reconnecting or toggling an MCP server fails in headless mode, the error is now mapped to a friendlier message before display instead of the raw client error being shown.

Details
  • The failure is logged as "mcp reconnect/toggle failed" with the underlying error, or "(no detail)" when the error carries none.
  • A related path sanitises the server name before putting it in "Server not found:".
Evidence

mcp reconnect/toggle failed

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

See this entry in the whole of v2.1.248 →

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