What Is llms.txt and Should Your Business Have One?
Direct answer
llms.txt is an emerging convention: a plain-text file at your domain root that gives AI systems a curated, readable summary of who you are, what you offer, and where your key pages live. It is not an official standard and adoption by platforms is still forming, but it costs an hour, carries no risk, and puts an authoritative self-description exactly where machine readers look first.
- What belongs in an llms.txt file?
- Do AI platforms actually read it?
- How does llms.txt relate to robots.txt and schema?
- Frequently asked questions
What belongs in an llms.txt file?
The factual core: what the business is, who it serves, where, key services with URLs, and how to verify or contact you.
Think of it as your entity's README: business name and one-line definition, services in plain language, service area, location, parent or sister brands, and the handful of URLs that matter most. Factual tone throughout; it is a reference document for machines, not a sales page, and marketing language actively degrades its usefulness.
Do AI platforms actually read it?
Adoption is early and uneven, which is precisely why the honest pitch is cheap insurance rather than guaranteed effect.
The convention emerged from the AI-tooling community and platform behaviour around it continues to evolve. What is certain: publishing one cannot hurt, it takes an hour, and if the convention consolidates, early publishers hold an authoritative self-description already in place. That risk-reward profile justifies the hour for nearly every business.
How does llms.txt relate to robots.txt and schema?
Complementary layers: robots.txt grants access, schema structures facts per page, llms.txt summarizes the whole entity in prose.
robots.txt is permissions, schema is machine-structured facts embedded in pages, and llms.txt is the plain-language overview a system can read in one fetch. None substitutes for another; together they cover access, structure, and summary. Ours lives at aisearchready.ca/llms.txt as a working example.
llms.txt contents
- One-line definition of the business
- Services listed plainly with key URLs
- Service area and location stated
- Brand relationships named
- Factual tone; no marketing language
Common mistakes to avoid
- Writing it as ad copy instead of reference material
- Letting it contradict the website's current facts
- Publishing it once and never updating it with the business
Frequently asked questions
Does llms.txt replace a sitemap?
No; the sitemap enumerates every URL for crawlers, while llms.txt curates and explains the important ones for language-model readers. Keep both.
Can llms.txt hurt my SEO?
No; it is invisible to ranking systems and users, an additive file with no downside beyond the hour it takes.
Last reviewed: July 10, 2026. We keep resource content maintained as AI platforms evolve.
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