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Sweep 10 Nov 2026 · 02:18Z Build v2.1.322 539 read Stable v2.1.311 Latest v2.1.322 Next v2.1.322 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.321 ·

Resume checks after compaction give more detailed results

Claude Code's checks on a session resumed after compaction now say more precisely what was found behind the compacted part

Under the hood Internal Changes
JSON All of v2.1.321
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
CompactionArea: what it touches
Internal ChangesKind: in v2.1.321,
Internal ChangesSection of the release
What

Compaction is when Claude Code shortens a long conversation by replacing older messages with a summary. When a session is resumed after this, Claude Code checks that the saved conversation fits together. These checks used to give only a yes or no about whether something started behind the compaction. They now name what it was: one of your prompts, or a hidden message. They also count command entries that were left out. When a remote switch is on, saved messages that are only partly missing are treated as acceptable.

Why

This changes how sessions resumed after compaction are checked.

See this entry in the whole of v2.1.321 →

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