What llms.txt is, and what to actually put in it
llms.txt is a proposed convention — a plain-text markdown file published at yoursite.com/llms.txt — that gives AI crawlers (ChatGPT, Claude, Perplexity and similar) a curated, human-written map of your most important pages, instead of leaving them to infer structure from a full site crawl. It sits alongside robots.txt and sitemap.xml as another discovery signal, though unlike those two it isn't a web standard enforced by any single company — treat it as a low-cost, low-risk addition, not a guaranteed ranking lever.
The format is simple: an H1 with your business/site name, a one-paragraph blockquote description, then one or more ## sections each listing markdown links with a one-line description. This tool generates exactly that structure from your inputs — the same shape used by shakalakaa's own llms.txt.
Once downloaded, upload the file to your site's root so it resolves at https://yoursite.com/llms.txt. For the fuller picture on why this matters and how it fits alongside structured data and crawler access, see the llms.txt guide and run your site through the AI Visibility Checker afterward to confirm it's being picked up correctly alongside your other AI-readiness signals.