llms.txt
llms.txt is a plain-text file at a site's root that tells AI crawlers which pages matter, how they relate, and where to read the long form — a sitemap for assistants, not for Google.
The file is markdown at /llms.txt: a short description of the site, then links to the pages you actually want quoted — product, pricing, docs, a glossary. Some teams add /llms-full.txt with more of the prose inlined so a model does not have to scrape the HTML.
It does not replace schema markup or AEO. Those make a page readable. llms.txt is the table of contents: here is the canonical set, ignore the rest. Assistants that honour it spend tokens on the pages you named.
It is not a ranking hack and not every crawler reads it yet. We still ship it on sites we want cited, because the cost is a file and the alternative is hoping a model finds the right URL in a mess of campaign landing pages.
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