llms.txt

A proposed convention — a /llms.txt file at the root of a site — that gives LLMs a clean, structured map of what the site is about and where to find authoritative content.

robots.txt tells crawlers what they may not read. llms.txt tells AI assistants what they should read: a curated, markdown-formatted index of your most important content, written for a model rather than for SEO.

It's still a convention, not a hard standard, but it's being adopted quickly. Treat it as a sitemap optimised for LLMs — and ship a real one rather than a generated dump.