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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 ·

PostToolUse hooks only trigger the output-rewrite notice on real changes

When a PostToolUse hook returns updated output, Claude Code now shows its notice only if the output actually changed

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
HooksArea: what it touches
Bug FixesKind: in v2.1.323,
Bug FixesSection of the release

Unclear What the new option about where plans are kept changes for hook users is not stated.

What

A hook is a command you configure to run automatically at certain points. A PostToolUse hook runs after a tool call (one action Claude takes, such as reading a file) succeeds. It can return updated output for that tool. Claude Code now shows its notice about this updated output only when the output really differs from the original.

Hook output handling also now receives an extra option about where plans are kept.

Why

You should see fewer notices from hooks that hand back output unchanged. The way hooks behave may also differ slightly in some cases.

Read from
Names in the bundlePostToolUse
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 doubtWhat the new option about where plans are kept changes for hook users is not stated.
Anthropic's release notes agreeChanged cloud scheduled tasks: a PostToolUse hook from your own settings can no longer replace the plan in ExitPlanMode's result

See this entry in the whole of v2.1.323 →

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