llms.txt validator
Fetch your site's /llms.txt and check it against the llmstxt.org spec. Live, right here.
What this checks
llms.txt is a Markdown file at your domain root that hands AI agents a clean map of your best content. The llmstxt.org spec wants a single H1 title, an optional summary blockquote, and H2 sections of Markdown links. This validator fetches your file and checks each of those, plus whether it's real Markdown and not an HTML error page.
It's a static check, so nothing is stored. Fix the warnings, redeploy, and run it again.
Frequently asked questions
- What is llms.txt?
- llms.txt is a Markdown file at your domain root (yoursite.com/llms.txt) that gives AI agents and answer engines a curated, machine-readable map of your most useful content. It's an emerging standard defined at llmstxt.org.
- Where does llms.txt go and what should it contain?
- It lives at the root of your domain, at /llms.txt. The spec wants a single H1 title, an optional summary blockquote, and H2 sections containing Markdown link lists that point at your key pages.
- Does llms.txt help SEO?
- It doesn't change traditional search rankings. It's about agent experience: making it easier for AI crawlers and answer engines to find and cite your best content. It's one of 249+ checks a squirrelscan audit runs.
llms.txt is one of 249+ checks
squirrel audit checks llms.txt alongside SEO, performance, security, and agent readiness across your whole site. Install the CLI and run it locally for free.
Install
$