Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.224,
Internal ChangesSection of the release
What
The message, hook payload and control protocol schemas are now built from directly bound helpers rather than one shared namespace object. Field names, defaults, optionality and descriptions are unchanged.
Evidence
Controls Claude's thinking/reasoning behavior. When set, takes precedence over the deprecated maxThinkingTokens.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
