Glossary Definition
llms.txt
/ˌɛl.ɛl.ɛm.ɛs.ˈtɛkst/ noun
A plain-text Markdown file placed at the root of a website (yoursite.com/llms.txt) that provides AI systems with a curated index of the site's most authoritative content. Proposed by Jeremy Howard of Answer.AI in late 2024. Functions as a routing guide for AI crawlers — telling them which pages are worth fetching among those they are allowed to access — complementing robots.txt (access control) and sitemap.xml (full URL index).
See it in action
Run an AI SEO audit
Check technical SEO, AEO readiness, GEO signals, crawler access, and content gaps in one workflow.
Explore ThothCard 1Read the full guide
Go deeper on llms.txt
Read a practical guide with examples, workflows, and implementation advice.
Read the GuideCard 2