Under the hoodTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SDK OutputArea: what it touches
ImprovementsKind: in v2.1.229,
ImprovementsSection of the release
What
When Claude Code assembles an assistant message from accumulated text on the stream-json path, it now sets stop_reason: "end_turn" and stop_sequence: null. Tools consuming stream-json output see a complete, correctly shaped message instead of one missing those fields.
Evidence
stop_reason: "end_turn"
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
