llms.txt
llms.txt is a proposed plain-text file at the root of a website that gives AI models a concise, curated description of the site — what it is, its key pages, and how to use its content.
Modeled loosely on robots.txt and sitemaps, llms.txt is a single Markdown-style file (at /llms.txt) that summarizes a site for large language models: the business, its most important pages, and context an engine should know. It is an emerging convention rather than a universal standard.
For a business that wants to be understood and cited correctly by AI, an llms.txt offers a clean, machine-readable summary in one place — reducing the chance an engine misdescribes you and increasing the odds it surfaces your key pages.