llms.txt Generator (Free)

Create an llms.txt for your site or docs in one command, with Markdown copies of your pages, and check any llms.txt against the format at llmstxt.org (v2, Aug 2026).

python3 -m llmstxt generate --dir public --base https://example.com/ --name "Example" --md --out public/llms.txt
python3 -m llmstxt generate --sitemap https://example.com/sitemap.xml --fetch --name "Example" --out llms.txt
python3 -m llmstxt check https://example.com/llms.txt --links
python3 -m llmstxt headers --base https://example.com/ --server nginx

• generate from a static build folder (--dir + --base) or a sitemap (--sitemap, file or URL; --fetch reads each page's title and description). It writes the H1, a > summary (your home page's meta description unless you pass --summary), optional details (--details @notes.md) and one ## file list per site section, with each page's description as the link note. --section docs=Documentation renames a section, --optional 'blog/*' moves pages under ## Optional (the section agents can skip), --exclude 'tags/*' leaves pages out. 404 pages and noindex pages are skipped.
• --md writes a clean Markdown copy next to each HTML file (page.html -> page.html.md, docs/index.html -> docs/index.html.md, the URL scheme the proposal recommends) without navigation, headers, footers or scripts, and links llms.txt to those copies.
• check a file or URL: H1 first (the only required part) and only one, summary blockquote placement, [name](url): notes list format, relative or duplicate links, empty sections, headings the format doesn't use, ## Optional last, file size, content type. --links requests every link and reports errors, redirects and .md links served as HTML. Exit code 1 on high-severity problems, for CI.
• headers prints the Link: <page.html.md>; rel="alternate"; type="text/markdown" and rel="describedby" setup for nginx, Apache, Netlify / Cloudflare Pages _headers and HTML <link> tags, so agents can find the Markdown versions and the llms.txt.

Run ./demo.sh for the example site (7 pages, a noindex page and a 404 skipped) and ./run_tests.sh for the tests. Python 3.9+, no dependencies. Live fetching blocks private and local addresses; set LLMSTXT_ALLOW_PRIVATE=1 to use it on a local dev server.

An llms.txt is a proposal, not a search ranking factor; it helps agents and AI assistants that look for it. The Markdown converter handles common page markup (headings, lists, tables, code, links); pages built entirely in JavaScript need --sitemap --fetch against a server-rendered site or your framework's own Markdown output.