LLMS.TXT Validator — Free Online Checker

LLMS.TXT Validator

llms.txt is a plain-Markdown file that sits at the root of your site and tells AI assistants and answer engines what your content is about. Because models rely on its exact structure — an H1, a blockquote summary, sections of links — even small format mistakes can make the whole file hard to parse. This validator checks your llms.txt against the spec and flags every issue with a line number and a fix suggestion.