What is llms.txt and does my industry need one?
Direct Answer
According to the original proposal by Answer.AI, llms.txt groups a site's pages by function — documentation, product information, guides — using standard markdown links, so an AI assistant that supports the convention can find the relevant page for a query without crawling the whole site or guessing from a sitemap built for search engines, not for language models.
A markdown file, one fixed address, no submission needed
According to Answer.AI's original proposal, published on September 3, 2024, llms.txt sits at /llms.txt, the same fixed convention robots.txt uses, and it is meant to be readable both by a person browsing and by software parsing it. There is no registration process — publishing the file at that address is the entire mechanism.
The file itself does not contain the content — it links to pages that already exist. That makes it entirely dependent on the quality of what it points to, which is why this hub treats it as the last step, not the first: organize the knowledge first.
No ranking effect confirmed, and Google says so
According to Search Engine Roundtable, John Mueller, from Google, said the presence of an llms.txt file on a site does not amount to endorsement from Google. The statement does not claim the file has zero effect anywhere — it addresses the specific claim that Google validates or rewards it, which it does not.
This page does not claim llms.txt affects Google search rankings, and it should not be read into any recommendation elsewhere in this hub. Whatever value the file has sits in how a language model consuming it, if it supports the convention, finds the right page faster — a separate question from search ranking.
One file the RudekWydra site already publishes
Rather than describe the format in the abstract, the RudekWydra site publishes its own, at rudekwydra.com.br/llms.txt. It groups the site's pages into sections — documented methodology, demand-generation services, strategy services, sector pages, guides, blog articles — each with a short line describing what the linked page covers. No metric of visits, clicks or ranking is claimed for it here; it is shown only as a working example of the format, not as evidence of an effect on search.
After the pages exist, not instead of them
For Roberto Wydra, founder of RudekWydra, the honest order of operations rules out most of the urgency around this file. "Publishing an index to pages that do not explain the product clearly just organizes the confusion — it does not fix it. The file earns its place after the catalogue, the specification tables and the glossary are already worth pointing to", he says.
A useful checklist before writing one: does the site already have a page that answers each major technical question in plain text; is there a glossary explaining the company's own terms; is the catalogue structured, not only available as scanned PDF. Where the answer is no, the productive next step is content, not a new file. Where the answer is yes, the file costs little to add and does no harm.
RudekWydra's own documented methodology follows the same order: it publishes the reasoning, the limitations and the measurement protocol in plain text first, and only then does an index like llms.txt become worth adding on top of it.
FAQ
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See whether your site is worth mapping for AI yet
The diagnosis checks the technical content first, because an index only helps once there is something worth finding.