A plain-text file at the root of a domain (like /robots.txt) that gives AI systems a curated, machine-readable summary of your brand, products, and key documentation links.
The llms.txt standard was proposed by Jeremy Howard in 2024 and has been adopted by Anthropic, Mistral, and several major SaaS brands. It is a markdown file served at https://yourdomain.com/llms.txt that lists your most important pages, your brand description, and structured links to documentation, pricing, and key resources.
Why it matters: when an AI agent visits your site programmatically, it does not have time to crawl every page. llms.txt gives it a curated map. Brands that ship one are increasingly being cited more often in Perplexity and Claude. VibecodeAEO can audit, generate, and validate llms.txt for you.
VibecodeAEO scans your site for all AEO factors weekly and tells you exactly what to fix.