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

Cross-session inbox carries the sender's process start token

Under the hood
Useful2 Signal3
Cross-Session Messaging

Messages from your other sessions now identify the exact process run, not just the pid.

What

Messages arriving over the local cross-session socket now record a verified process start value along with the sender's pid, so the origin identifies a specific process run rather than just a pid.

Details
  • The connection handler resolves the peer token once per connection and reuses the token read during setup when the pid matches, instead of re-reading it per message.
Evidence

verifiedPeerProcStart

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 v2.1.248 →