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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 ·

The list of available tools can now be rebuilt when plugins signal a change

Claude Code can now rebuild its list of available tools in response to a tool.list event, so the list can change during a session

You'll notice Improvements
JSON All of v2.1.323
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Plugin HooksArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release

Unclear It is not clear whether this is active for everyone or only behind a plugin setting that is switched on separately.

What

Claude Code keeps a list of the tools Claude may use, such as reading files or running commands. It can now rebuild that list when a tool.list event fires. Each rebuild bumps a revision number, so Claude Code stops reusing the old saved copy of the list and picks up the new one.

Why

This appears to let plugin modules add to or change the tool list while a session is running, instead of the list being fixed once at the start.

Read from
Names in the bundletool.list
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 doubtIt is not clear whether this is active for everyone or only behind a plugin setting that is switched on separately.
Anthropic's release notes agreeChanged tool.list plugin hooks so the tools they add or remove apply to the model and every agent

See this entry in the whole of v2.1.323 →

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