llms.txt guide: useful context file, not a ranking shortcut.
An llms.txt file can provide a concise, machine-readable map of a company, product and important public pages. It may help systems or agents that choose to read it, but Google does not require it for AI Overviews or AI Mode. Treat it as supplementary context, not a substitute for crawlable HTML, sitemaps or strong pages.
Researched and reviewed by Eli · 9 August 2026
The question this page answers
Decide whether and how to publish llms.txt
State facts an agent needs
Describe what the company does, who it serves, core capabilities, important limitations and the canonical links for pricing, security, documentation, evidence and contact. Keep claims consistent with the visible website. Do not add private context or marketing assertions that cannot be verified elsewhere.
Keep the file small and maintained
Use stable headings and direct URLs. Link to the strongest canonical page for each topic instead of copying the whole website into text. Assign ownership so the file changes when pricing, positioning or documentation changes.
- Company and category
- Ideal customer
- Key public facts
- Canonical evidence links
Measure it as an experiment
Confirm the file returns a public 200 response and appears in internal technical audits. Watch logs for requests where possible. Do not report an AI ranking gain merely because the file exists; connect any change to observed answers and cited sources with normal uncertainty.
Questions buyers ask next
Is llms.txt required by Google?
No. Google says no special AI text file is required for its generative search features.
Should llms.txt replace a sitemap?
No. Keep standard sitemaps and crawlable HTML; llms.txt is optional supplementary context.
What should not be included?
Private data, unverifiable claims, stale pricing and links that contradict the visible website.
Primary sources
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