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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.242

Browser navigation is given to the safety judge as ground truth

You'll notice
Useful3 Signal3
Browser

The browser safety judge now sees where the tab actually navigated and judges against that.

What

When Claude Code drives Chrome, the safety judge that reviews each browser action now receives a navigation record naming the page the tab moved from and to, and is told to treat it as fact: judge the action against the URL actually landed on, not the stated intent.

Details
  • The judge is instructed to treat form submissions, credential entry, code execution and data exposure on an unexpected origin as suspect.
  • Always part of the Chrome judge prompt; no setting turns it off.
Evidence

it is ground truth that the tab this action targets is on a different site

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.242 →