Definition
What is llms.txt?
llms.txt is a convention, proposed by Jeremy Howard in 2024, for a markdown file at a website’s root (/llms.txt) that tells AI systems what the site contains and where the important pages are. Where robots.txt tells crawlers what not to read, llms.txt tells agents what to read first.
It matters most for sites that expect agents as visitors. A well-built llms.txt is not just a sitemap; it can carry instructions an agent can act on, like the one command that installs this site’s Starter Pack skills. As more buying research and tool discovery happens through AI assistants, the file becomes a storefront for agents: this site’s version is at vibemarketers.ai/llms.txt.
Stub · This definition is being expanded with verified examples from shipped systems. Updated .
VibeMarketers publishes one verified marketing agent system every week, with the installable files.