This is not a 'web standard', but rather a proposal (to who?). This does not operate like robots.txt, which would allow site administrators to tell the LLM to

This is not a 'web standard', but rather a proposal (to who?). This does not operate like robots.txt, which would allow site administrators to tell the LLM to f-off. Instead, it "guides" LLMs through your site for better contextual information (i.e., documentation). The official site is at https://llmstxt.org/ https://llmstxt.org/.