Glossary
llms.txt
A root-level plain-text file that summarizes a site for AI systems.
Definition
llms.txt orients agents to what you do and which URLs matter. It is not a ranking switch and does not replace crawlable HTML, sitemaps, or accurate metadata.
In practice
- Use precise language on public pages so assistants and crawlers share the same meaning
- Pair definitions with crawlable HTML, metadata, and intentional robots policy
- Measure outcomes (mentions, citations, pillar scores) after you change signals
Related guide: llms.txt.
See also
Next step
Browse the glossary index, read what is AI visibility?, or measure your site.
Related
FAQ
What is llms.txt?
A root-level plain-text file that summarizes a site for AI systems.
Why does llms.txt matter for AI visibility?
llms.txt orients agents to what you do and which URLs matter. It is not a ranking switch and does not replace crawlable HTML, sitemaps, or accurate metadata.
How can BatSignal help?
BatSignal measures crawl access, content readiness, ChatGPT presence, and related signals so teams can improve AI visibility with evidence—not guesswork.