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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

Claude Code v2.1.323 ·

Messages attached to a tool result are no longer sent twice

Messages meant to be attached to a tool's result are no longer also added as separate content

You'll notice Bug Fixes
JSON All of v2.1.323
You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Tool ResultsArea: what it touches
Bug FixesKind: in v2.1.323,
Bug FixesSection of the release
What

When Claude Code gathers the output of a tool, the result of an action Claude asked for, it now skips messages that are marked to be attached to that result. Before, these were also added as separate content.

Why

This changes how tool output is put together before Claude reads it.

See this entry in the whole of v2.1.323 →

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