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Sweep 22 Oct 2026 · 20:42Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.308 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
Writing the changelog v2.1.309 compose entry prose · 2/5

Claude Code v2.1.290 ·

New OfferChromeSetup tool lets Claude offer to set up Claude in Chrome

A new OfferChromeSetup tool lets Claude offer one-time Claude in Chrome setup mid-task when the browser extension is not connected

Group of 2 You'll notice New Features
JSON All of v2.1.290
You'll noticeTier: how much it should matter to you
4Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Chrome & BrowserArea: what it touches
New FeaturesKind: in v2.1.290,
What probably matters to youSection of the release

Unclear It is not settled where the tool is registered or what switches it on, so it may not be reachable in this version.

What

A new tool, OfferChromeSetup, is defined. A tool is an action Claude can choose to take during a task. This one lets Claude offer you one-time setup of Claude in Chrome, so the task can use your own signed-in browser.

  • It is meant for when a Claude in Chrome tool has reported that the browser extension is not connected and the task needs your browser.
  • It shows a setup card asking "Set up Claude in Chrome?" and waits until you respond.
  • It reports back connected or not_now. One finding also lists a third result, no_attempt_yet.
  • It is a deferred tool, meaning it is not loaded until it is needed.

One finding says the tool is enabled only when a server-side flag reads true from the server itself, and that its built-in default is off. The flag server returned off for this site's account and for an anonymous baseline, but no reading of the flag has been taken under this release yet. The findings did not trace whether Claude can call the tool yet.

Why

If it is switched on, Claude can ask you to connect Chrome in the middle of a task instead of failing when the extension is missing. You choose whether to set it up then or later.

Read from
Feature flag
tengu_brass_kite Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.290: off

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.290. It isn't a statement about your account. What a flag value here can and cannot tell you

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 settled where the tool is registered or what switches it on, so it may not be reachable in this version.

See this entry in the whole of v2.1.290 →

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