Claude Code v2.1.221 ·
Stop-details refusal categories documented as an open set
Docs now say refusal categories are an open list, so generated code stops assuming only two.
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
ImprovementsKind: in v2.1.221,
ImprovementsSection of the release
What
The "Stop details" quick reference no longer presents category: "cyber"|"bio"|null as the complete set of values.
Details
category is now described as an open set with additional examples, so generated code should not exhaustively switch on two values.
Evidence
an open set, e.g. "cyber", "bio", "reasoning_extraction", "frontier_llm", or null``
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
See this entry in the whole of v2.1.221 →
