llms-full.txt is the long-form companion to llms.txt. While llms.txt is a structured index of URLs, llms-full.txt contains the full canonical content an AI agent might need to write accurately about a brand or product. It is typically 3,000 to 10,000 words of clean markdown and sits at the root of the domain alongside llms.txt.
Brand description, service descriptions, key facts, citation guidance, contact information, FAQs. Everything an AI agent might need to answer a question about the brand without having to crawl multiple pages.
Agents prefer clean markdown over HTML. A single file with 5,000 words of brand canon is faster and more reliable for them to consume than scraping a dozen rendered pages. Sites publishing llms-full.txt give agents a one-stop authoritative source.
Write the document in clean markdown with explicit section numbering. Cover all the questions a curious user might ask. Place at /llms-full.txt. Spacemen Digital's reference implementation is at /llms-full.txt.
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