OptionalAvailableWhat WOULD have been valid (channel keys, instance ids or verb names), so the model can retry.
OptionalDetailsSpecifics — e.g. each schema violation for 'invalid_params'.
OptionalErrorWhy the call was refused or failed (failure only).
OptionalErrorA message the model can read and act on (failure only).
OptionalResultThe verb's result (success only).
Whether the action ran and succeeded.
The outcome of a targeted
ContextToolcall.