What is an LLM endpoint and do I need one?
An LLM endpoint is a machine-readable file (llm.json or LLM.txt) that tells AI systems who you are and what your site covers. Yes, you need one.
An LLM endpoint is a machine-readable file published on your website's root that gives AI language models a structured summary of your site's identity, purpose, content coverage, and network connections.
The two primary formats are llm.json (a structured JSON file) and LLM.txt (a plain-text declaration). Both serve the same purpose: making your site identity readable by AI systems without requiring them to parse your HTML.
If you are building AI-ready assets, yes, you need one. It is the equivalent of a business card for the machine layer of the internet. Without it, AI systems have to infer who you are and what you cover from your content alone. With it, you tell them directly.
Implementation is straightforward: create a JSON file at /ai/llm.json and a text file at /llm.txt, both declaring your site name, domain, topics, and related properties.