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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 ·

The MCP tool-refresh tool now tells the model when to use it

Claude now knows when to refresh MCP tool lists, such as after a server reconnects.

You'll notice Improvements
JSON All of v2.1.248
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.248,
ImprovementsSection of the release
What

The tool that re-queries connected MCP servers for their tool lists ships a written description: use it when a device the user says is now open is missing, when an expected tool is absent, or when a server's connection has recovered.

Details
  • One sentence varies by surface: where MCP tools run inside the REPL the description says refreshed tools become callable there, otherwise that they are available immediately.
  • The choice is made by a runtime function call, not by a settings key.
Evidence

Re-queries the tool list of connected MCP servers and updates the set of available tools, reporting which tools were added or removed.

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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