FREE TOOL
Does your site serve an llms.txt?
AfterLaunch checks whether your site publishes an llms.txt file, the plain-text map written for AI crawlers, and tells you what a strong one contains.
Free, no signupFetching the file the way an AI crawler does.
What this tool checks
AfterLaunch requests /llms.txt on the site you enter, the same way an AI crawler would, and reports whether the file exists, how large it is, and a one-line verdict on what that means for you. It checks the root of the domain you enter, which is where the convention puts the file; a file that lives only on a docs subdomain counts as missing here.
The full result, unlocked with an email, lists what a strong llms.txt contains, section by section, so you can check yours against it or write one in one sitting.
What llms.txt is, honestly
llms.txt is a plain-text file at the root of your site that gives language models a curated map: what the product is, who it serves, and which pages carry the substance. It is an emerging convention rather than an enforced standard, and adoption among AI systems is still uneven. The honest case for it: it costs minutes, it cannot hurt, and it is one more clean, machine-readable statement of what you are, on a web where most sites make machines guess.
If the check finds no file, you can generate a ready-to-publish one right here, from a short description of your product.
Common questions
Is llms.txt required for AI visibility?
No. It is an emerging convention, and AI systems vary in whether they read it. It is a low-effort, zero-risk addition rather than a requirement. The layers that matter more are crawlability, readable content, and how the rest of the web describes you.
Where should the file live?
At the root of your domain, at /llms.txt, served as plain text. The checker requests exactly that path.
What should go in it?
A short factual description of the product, who it is for, and links to the pages that carry real substance: docs, pricing, comparisons. The full result breaks this down section by section, and if you have no file yet, the generator here writes it for you.
What does it cost?
Nothing. The present-or-missing verdict is free with no signup. The section-by-section recommendations unlock with an email address. No card, no trial starts.
AfterLaunch is the agentic growth engine. This check is one of the hundred-plus runs it makes on a company every week.
claude mcp add afterlaunch --transport http https://afterlaunch.io/api/mcp --header "Authorization: Bearer $AFTERLAUNCH_API_KEY"Cursor, Windsurf, Gemini CLI and VS Code read AGENTS.md instead. ChatGPT and Claude on the web need no file, just the connector. See the per-client guides.