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 v2.1.224 Home All releases olderv2.1.223 v2.1.225newer

Teammate messages carry the sender's permission mode

Under the hood
Useful3 Signal4
Agents

Messages between agents now carry the sender's permission mode, preserved across relays.

What

Messages passed between agents now include the sender's permission mode in the message header, drawn from a fixed two-value list, and the parser preserves it when a message is relayed through further hops.

Evidence

from-mode=

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 v2.1.224 →