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Sweep 12 Nov 2026 · 23:00Z Build v2.1.323 540 read Stable v2.1.311 Latest v2.1.323 Next v2.1.323 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.323 ·

Memory saving refuses tools that run on the API's side

Behind a feature check, the memory-saving pass now allows no API-run tool calls and saves nothing if a request includes such tools

Under the hood Internal Changes
JSON All of v2.1.323
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MemoryArea: what it touches
Internal ChangesKind: in v2.1.323,
Internal ChangesSection of the release

Unclear The feature check was not identified, so whether memory saving stops for you when MCP servers are set up is unknown.

What

Claude Code runs a separate pass that picks out things worth saving to memory from your conversation. Behind a feature check, that pass now tells the API that no server-run tool calls are allowed. A server-run tool is one the API carries out itself rather than Claude Code.

If a request in the pass includes such a tool or MCP servers, it records an error and may save nothing. MCP servers are add-ons that give Claude extra tools through the Model Context Protocol.

Why

The memory pass can no longer make tool calls on the API's side.

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 doubtThe feature check was not identified, so whether memory saving stops for you when MCP servers are set up is unknown.

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