I'm not sure I understand the point of this. If mistakes (or lies) aren't tolerable in the output, then whoever ran the agent should be responsible for reviewing the output and the resulting actions. I don't see how LLMs can be "responsible" for anything because they don't think in the way we do nor do they have motives in the way we do.

The "Hallucination Defense" isn't a defense because end of the day, if you ran it, you're responsible, IMO.