How is the llms.txt written from a URL?
The generator fetches your page, reads its title, description and links, and visits a few key pages. A language model then writes the title, summary and sections in the format the llms.txt proposal describes: an H1, a short blockquote summary, and Markdown link lists with one-line descriptions.
It is a draft. AI can pick the wrong pages or describe them loosely, so read every line before publishing.