Source Intelligence
Follow Discord

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 v2.1.251 Home All releases ←olderv2.1.250
Claude Code v2.1.251

Forked agents are spawned asking to inherit the parent model

Under the hood
Useful1 Signal1
Agents

Forked agents now ask for the parent's model explicitly instead of leaving it blank.

inherit
What

When a forked or inline agent is spawned, the model is now passed as the literal string "inherit" rather than being left unset, so the parent's model propagates explicitly instead of by omission.

Details
  • Only the fork path changed; non-forked spawns still pass their resolved model.
Evidence

ze ? "inherit" : Rr

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 v2.1.251 →