Glossary / Technical Signals
Technical Signals
llms.txt
A plain-text file at the root of your domain that helps AI agents navigate your most important pages.
Definition
llms.txt is an emerging convention (inspired by robots.txt) that places a human- and machine-readable orientation file at `yourdomain.com/llms.txt`. It typically lists key pages with brief descriptions in a concise Markdown format, giving AI agents a structured guide without requiring them to crawl the full site. It is not yet an official standard but is being adopted by developer-focused sites.
Why it matters for AI visibility
As AI agents increasingly browse the web on behalf of users, a well-maintained llms.txt helps ensure they find your canonical product, documentation, and support pages first — rather than discovering outdated or marketing-only content by accident.
Related
Check your site
The free scan checks crawler access, robots.txt, sitemap, structured data, and discoverability — and turns the results into a prioritized fix list.