Definition
What is llms.txt?
An llms.txt file is a plain-text file placed at the root of a website that gives large language models a curated, machine-readable map of the site's most important pages and descriptions. It is a proposed convention, analogous to robots.txt or sitemap.xml but aimed at AI crawlers and assistants rather than search engine bots.
Why it matters
An llms.txt file makes your key content easier for AI systems to parse and cite correctly, and is low-effort insurance as AI-driven discovery grows.