Answer Engine Optimization
llms.txt
llms.txt is a plain text file placed at the root of a website that gives large language models a short, readable summary of who the site belongs to, what it offers, and which pages matter most.
The file lives at a predictable address, such as example.com/llms.txt, and is written in Markdown. It typically includes a one-line description of the business, key facts like location and services, and a list of important pages with short descriptions.
llms.txt is a proposed convention rather than an official standard, and AI tools do not all read it yet. It is cheap to add, though, and it gives answer engines a clean source of facts instead of making them piece things together from navigation menus and footers.
This site publishes its own llms.txt alongside its sitemap and robots.txt.