What
The Stop hook event now has a formal output schema with an additionalContext field, allowing hooks to send feedback to the model after it finishes a response so the conversation continues.
Details
- Hook output schema:
{ hookEventName: "Stop", additionalContext?: string } additionalContextis non-error feedback delivered to the model; the conversation continues so the model can act on it- Previously, the Stop hook output schema was not separately defined — it now matches the SubagentStop pattern
Evidence
Schema description (search for "Hook-specific output for the Stop event. additionalContext is non-error feedback")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.