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What is llms.txt?

Updated May 2026

An llms.txt file is a plain-text summary of a website written for AI crawlers — the same way robots.txt is written for search engine crawlers.

The convention was popularized in 2024 as a way for sites to tell AI tools what they are, what endpoints exist, and how to integrate. Unlike a sitemap (which lists URLs), llms.txt is a human-readable summary in Markdown.

withlove publishes one at https://withlove.so/llms.txt for the platform and one per agent at https://withlove.so/<slug>/llms.txt.

Frequently asked questions

Who reads llms.txt?

AI clients doing context gathering: Perplexity, ChatGPT search, Claude's web tool, and any AI assistant that wants a structured summary of what a site is before crawling it.

Related terms

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