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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.272 ·

Second gated tool alongside "Brief": isPewterOwlTool

A second feature-flagged tool, referenced as isPewterOwlTool, sits alongside the existing Brief tool's flag

Nothing to try yet In Development
JSON All of v2.1.272
Nothing to try yetTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Tool GatingArea: what it touches
In DevelopmentKind: in v2.1.272,
In DevelopmentSection of the release

Unclear The finding only shows a name reference; what isPewterOwlTool controls or what the tool does is not established.

What

The tool-name resolver now imports isPewterOwlTool from the same dynamically-loaded chunk that already supplies the Brief tool's name, the send-user-file tool's name, and the Brief tool's own enabled check (isBriefEnabled). This suggests a second tool, alongside Brief, that is controlled by its own feature flag.

Why

This points to another tool being prepared for gradual rollout in the same way the Brief tool was, though what this tool actually does isn't shown here.

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 doubtThe finding only shows a name reference; what `isPewterOwlTool` controls or what the tool does is not established.

See this entry in the whole of v2.1.272 →

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