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

Switch confirmation can show a hook's own reason

You'll notice
Useful3 Signal3
Hooks

Model and effort switch dialogs can show that a PreModelSwitch hook asked you to confirm.

PreModelSwitch
What

The "Switch model?" and "Change effort level?" dialogs now show a hook-supplied message, "A PreModelSwitch hook asked you to confirm", in place of the usual prompt-caching warning.

Details
  • Only when a hook supplies a reason; otherwise the caching-warning text is shown as before.
Evidence

A PreModelSwitch hook asked you to confirm

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 →