A defense document
Like if you are being accused of a particular crime, there are hard evidence items such as a credit card transaction, or a video camera placing you at a different scene, or an alibi. The other side is reasoning. When you explain something to a jury you are trying to put together a logical argument. There is no way this person would do this particular crime because this just would not make sense. Let's say they had their own personal stakes at risk, therefore there is no incentive for them to do this.
Those are two different classes of proof, and courts have treated them as different for a very long time. When the actor is an agent rather than a person, the second one has no representation format at all.
The specification in a way could act as a defense document. A premeditated Ulysses contract of how to logically examine their reasoning, as far as agent representations go.
The governance layer everyone is building evaluates an action before it runs. This is the other half. It is the instrument you would want afterward, when the question is not whether the agent was authorized, but whether what it did was consistent with the person it was acting for.