What Is llms.txt?

llms.txt explained

Just as robots.txt tells search engine crawlers which pages to access, llms.txt tells AI systems what your site is about, how it's organized, and what content is most important. It's a machine-readable summary designed specifically for language models rather than traditional search crawlers. A typical llms.txt file includes: a brief description of the site or product, a list of key pages with short descriptions, the primary topics the site covers, contact or attribution preferences, and any specific instructions about how the content should be referenced by AI systems. The standard is still emerging and not yet universally adopted, but early adoption gives you an advantage. As AI systems increasingly crawl and reference web content, having a clear machine-readable guide helps ensure your product is accurately represented in AI-generated responses. Without it, AI systems infer your site's purpose from whatever content they encounter — which may not reflect your actual positioning. For SaaS companies, llms.txt is particularly valuable because it lets you control the narrative. You can explicitly state what your product does, who it's for, and what makes it different — in a format that AI systems can parse and use when constructing answers about your category.