@Jeannen I really like the thinking here...But instead of ai.txt - since the intent is not to block, but rather, to inform AI models (or any other presumably automaton) - my reflex is to suggest something more general like readme.txt. But, then i thought, well, since its really more about metadata, as others have stated, there might already be existing standards...Or, at least, common behaviors that could become standardized. For example, someone noted about security.txt, and i know there's the humans.txt approach (see
https://humanstxt.org/), and of course there are web manifest files (see
https://developer.mozilla.org/en-US/docs/Web/Manifest), etc. I wonder if you might want to consider reviewing existing approaches, and maybe augment them or see if any of thjose makese sense (or not)...?