Well, sure, but from what I know, humans are way better at following 'implicit' instructions than LLMs. A human programmer can 'infer' most of the important basic rules from looking at the existing code, whereas all this agents.md/claude.md/whatever stuff seems necessary to even get basic performance in this regard.

Also, the agents.md website seems to mostly list README.md-style 'how do I run this instructions' in its example, not stylistic guidelines.

Furthermore, it would be nice if these agents add it themselves. With a human, you tell them "this is wrong, do it that way" and they would remember it. (Although this functionality seems to be worked on?)

That's fine for norms, but I don't think you can use it to describe every single piece of your code. Every function, every type, every CSS class...