llms.txt
A proposed convention: a markdown file served at /llms.txt that gives language models a curated map of a site's most useful content.

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How GEO works: make catalogs readable by AI
How does generative engine optimization work? For ecommerce, it makes product information easier for ChatGPT, Gemini, Perplexity, Copilot, and AI Overviews to retrieve, parse, verify, and connect to checkout-capable records where supported.

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Generative engine optimization for ecommerce: what AI reads and skips in 2026
Generative engine optimization for ecommerce makes product data readable, matchable, and buyable by AI engines through schema, attributes, availability, policies, and page copy they can parse.