OptionalInvalidOptional breakdown of specific parameters that failed validation.
Actionable human/LLM-readable explanation of how to recover or why retry is futile.
Whether retrying the action with modified parameters can succeed in this run.
OptionalSuggestedOptional names of alternative actions to call instead or beforehand.
OptionalSuggestedOptional fuzzy-matched candidate values (e.g., closest entity or field names).
OptionalValidOptional example of a valid parameter payload.
Structured recovery guidance returned by an action when it fails, enabling an AI agent to self-heal on retryable parameter errors or stop immediately on non-retryable failures.