llms.txt
llms.txt is an emerging draft standard (2024) where a text file is placed at a site's root to tell LLM systems about the site's structure and key resources.
llms.txt is a community standard proposed by Jeremy Howard (fast.ai) aimed at helping LLM systems (ChatGPT, Claude, Perplexity) discover and parse a site's essential content. Functions similarly to robots.txt or sitemap.xml but is optimized for LLM context windows.
The file is in Markdown format and lives at /llms.txt. It includes the site name, purpose, and a structured list of links to important resources.
The standard is early-stage (2024–2025) — no LLM vendor has officially endorsed it yet. Still, low-cost early move: adding the file does no harm and may be useful later.
