Assuming the person interacting with it is an adult, does it need any guard rails at all?
Also, if these are used in a professional setting, there is an even stricter criteria of not generating anything deemed inappropriate for that society. That might seem okay if we stick to an American only view (but even that I wouldn't actually bet on), but what happens if your AI shows things that violate very strong cultural norms of other societies, especially if those cultural norms run counter to our own?