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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 ·

Session scratch store tracks truncation and unsupported threads

Session state now tracks assistant messages the client truncated and unsupported threads.

Under the hood Internal Changes
JSON All of v2.1.248
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SessionsArea: what it touches
Internal ChangesKind: in v2.1.248,
Internal ChangesSection of the release
What

The per-session scratch store gained accessors for pending conversation edit kinds, assistant messages the client truncated, and thread keys it does not support, and renamed its worker check-in field. Nothing user-visible, but it shows client-side truncation now being tracked as state.

Evidence

clientTruncatedAssistantIds

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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