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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 v2.1.233 ·

MCP connection caches folded into one lazily created object

MCP connection and tool caches were merged into one lazily created object.

Under the hood Internal Changes
JSON All of v2.1.233
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 v2.1.233,
Internal ChangesSection of the release
What

The separate module-level maps for MCP connections, tool, resource and command lists, in-flight reauth and live clients are now fields on a single object created on first use and registered with the global cache registry. Connection reuse and live-client bookkeeping read through it.

Evidence

liveClients = new Set();

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

See this entry in the whole of v2.1.233 →

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