>llms.txt is supported by 0 of the relevant ai providers

True, but it serves a other purpose, especially when the website is offering developer-oriented services. It's a single link you can give your AI agent and ask to "read this, understand it does, implement it".

Sure, you could just point it at docs.<service>.com but there might be bot protection, authentication, JS-heavy content etc.

So i feel llms.txt still has a purpose.