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Sweep 25 Sep 2026 · 19:33Z Build v2.1.283 504 read Stable v2.1.274 Latest v2.1.283 Next v2.1.283 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.280 ·

New isTransparentWrapper() hook on an agent/tool adapter interface

Tool and agent adapters gain a new isTransparentWrapper() method, currently always false

Under the hood No documentation found Internal Changes
JSON All of v2.1.280
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Tool AdaptersArea: what it touches
Internal ChangesKind: in v2.1.280,
Internal ChangesSection of the release
What

The interface used for tool-or-agent adapters gained a new method, isTransparentWrapper(), alongside its existing prompt() and mapToolResultToToolResultBlockParam() methods. Right now it always returns false for every adapter.

Why

This lays groundwork for distinguishing adapters that just pass calls straight through from ones that add their own behavior, though no adapter currently reports itself as a transparent wrapper.

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Names in the bundleisTransparentWrapper
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 does not say what functionality will read this method or when it might start returning true.

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