Do llms.txt files directly improve rankings in generative AI search?

Treat llms.txt as an optional machine-readable publishing convention, not a guaranteed discovery mechanism or ranking factor. Before adding it, make sure canonical HTML pages are accessible, useful, internally linked, and supported by sensible robots directives and sitemaps. If you publish llms.txt, keep its links and descriptions accurate and maintain it alongside source content. Measure whether relevant crawlers actually fetch it; do not infer citation benefits from mere presence. Avoid replacing visible content, conventional SEO, or evidence-building with a speculative file.