llms.txt checker
Check that your llms.txt follows the format, that every link in it loads, and what to fix. Free, no account, results in a few seconds.
What a good llms.txt looks like
# Example Co > Example Co makes invoicing software for freelancers. Plans start at $9 a month (as of Nov 2026). ## Docs - [Quickstart](https://example.com/docs/quickstart.md): send your first invoice - [API reference](https://example.com/docs/api.md): every endpoint, with examples ## Company - [Pricing](https://example.com/pricing): plans and limits ## Optional - [Changelog](https://example.com/changelog)
More in What is llms.txt? and how to validate llms.txt by hand. Prefer the command line? curl "https://agentsready.dev/api/llms-check?domain=example.com"
What does the llms.txt checker test?
That /llms.txt exists and is served as text, starts with an H1, has a blockquote summary, groups links under H2 sections, lists pages as markdown links with short descriptions, that those links load, that it's a reasonable size, and whether llms-full.txt exists.
Where should llms.txt live?
At the root of your site (https://example.com/llms.txt). Developer platforms often put it on the docs host too. We check the root, www and docs. subdomains.
Does llms.txt help SEO?
Not for Google rankings: Google says Search doesn't use it. It helps agents that read your docs on purpose, like coding assistants and docs tools. It's cheap to add, so add it, and fix the things agents need first.
How do I make one?
Write it by hand from the format, let your coding agent do it with the agent-ready skill, or use your docs platform: Mintlify and GitBook generate one automatically.