llms.txt is a proposed convention: a plain-text file at /llms.txt that summarises your site for large language models, with links to your most useful pages.
Why bother
AI assistants increasingly answer questions directly. Giving them a clean, structured map of your site makes it easier to find, understand and cite your content — the same idea as a sitemap, but written for language models.
What goes in it
- A one-line description of the site
- What you offer, in plain language
- Links to your key pages, grouped
- Pointers to machine-readable content (markdown versions, sitemaps)
A minimal example
# Example
> Free SEO tools that run in the browser.
## Free tools
- FAQ schema generator: https://example.com/tools/faq-schema-generator
## Machine-readable
- Markdown versions at /tools/{slug}.mdRelated conventions
- robots.txt — controls what crawlers may fetch
- sitemap.xml — lists indexable URLs for search engines
- Markdown versions of pages — easy for models to read
See it live
This site publishes its own llms.txt and a markdown version of every tool page, e.g. /tools/faq-schema-generator.md. Point AI crawlers at your best content and keep it current.