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 v2.1.228 Home All releases olderv2.1.227 v2.1.229newer
Claude Code v2.1.228

Messaging refusals name the actual sources

You'll notice
Useful2 Signal2
Messaging

Teammate messaging errors now name which sources were checked when a recipient cannot be verified.

What

The messages the teammate messaging tool shows Claude when it cannot verify or disambiguate a recipient now say plainly which sources were checked, and the impersonation warning no longer assumes the sessions share a name.

Evidence

Your account's other sessions (Remote Control and cloud) could not be checked just now

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

See this entry in the whole of v2.1.228 →