Source Intelligence

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.

All of v2.1.248 Home All releases olderv2.1.247 v2.1.250newer
Claude Code v2.1.248

Clearer errors when a Chrome batch action is misused

You'll notice
Useful2 Signal1
Elsewhere

Misused browser action batches now tell you exactly what went wrong.

What

Batching several browser actions together in Claude in Chrome now returns specific messages instead of a generic failure: acting on multiple tabs in one batch, acting on a page after navigating to it, switching browsers mid-batch, malformed or nested batch items, and a missing tab.

Details
  • The missing-tab message points you at the tab-context tool to re-establish which tab is in play.
Evidence

Claude in Chrome: a browser_batch cannot act on a page after navigating to it.

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

See this entry in the whole of v2.1.248 →