Glossary /
llms.txt
A plain text file at the root of a website that tells AI systems what the site is and how to read it.
In more detail
Similar in purpose to robots.txt but for large language models, llms.txt declares your site's identity, key pages, and summary content in a format ChatGPT, Perplexity, Claude, and other AI systems can parse. Sites with a well-formed llms.txt are more likely to be cited accurately in AI-generated answers.
Why this small file matters more every month
Buyers increasingly start their research by asking an AI assistant rather than scrolling Google. When someone asks for a reputable breeder of a given breed in a given state, the assistant answers from what it can confidently understand about the sites it has read. An llms.txt file is you handing the machine a clean, plain-language summary of who you are, what you offer, and which pages matter, instead of making it guess from your markup. It is the difference between being described accurately and being described vaguely or not at all.
What a good breeder llms.txt contains
A strong llms.txt names the kennel and the person behind it, states what the business does in plain terms, lists the pages worth citing with a one-line description of each, and includes the canonical facts you want repeated, such as your breed, your region, and your credentials. It avoids marketing inflation, because an AI system weighing whether to trust you reads puffery as a negative signal. The file is short, honest, and specific. It is one of the cheapest, highest-leverage things a breeder site can have, and most breeder sites still do not have one.
Common questions
Where does llms.txt go?
At the root of your domain, so it lives at yoursite.com/llms.txt, the same way robots.txt does. AI systems look for it there.
Is llms.txt the same as schema markup?
No, they are complementary. Schema is structured data embedded inside each page; llms.txt is a single plain-text summary of the whole site for AI systems. The strongest sites have both.