Quick answer: llms.txt is a plain-text Markdown file at your site root (yourdomain.com/llms.txt) that gives AI systems a curated summary of your site: what it is, what matters, and where the key content lives. Creating one takes fifteen minutes: an H1 with your site name, a blockquote summary, then sections of annotated links to your most important pages.
What llms.txt is for
Language models work within context limits and cannot digest your whole site. The llms.txt proposal gives them a front door: a human-written map pointing to canonical, high-value content. Adoption among AI companies is still emerging – treat it as a low-cost, no-risk signal that also forces useful clarity about what your site is actually about.
The format
Markdown, structured as: an H1 title (site or business name); a blockquote one-paragraph summary of who you are and what you offer; optional context paragraphs; then H2 sections (“Guides”, “Products”, “About”) containing bulleted links, each with a one-line description. A minimal example:
# SEO Audit SEO
> Practical guides on GEO, AEO and AI search visibility, written from real client work by Adexorb Technologies, Kerala.
## Guides
– [GEO checklist](https://seoauditseo.com/geo-checklist/: 30 steps to AI visibility
– [ChatGPT SEO](https://seoauditseo.com/chatgpt-seo-get-recommended/: getting recommended by ChatGPT
Step-by-step
1. List your 10-30 most valuable pages – the ones you want AI engines reading first. 2. Write the file in any text editor following the format above. 3. Upload to your web root so it resolves at /llms.txt (WordPress: via file manager, FTP or a plugin). 4. Verify it loads as plain text in a browser. 5. Update quarterly as key content changes – a stale map misdirects.
llms.txt vs robots.txt vs sitemap
robots.txt says what bots may fetch (guide); the XML sitemap lists everything fetchable; llms.txt says what is worth fetching, with human context. They complement rather than replace each other – ship all three.
FAQ
Do AI engines actually read llms.txt?
Support is partial and growing – some tools and agents use it today, major engines are experimenting. The cost is fifteen minutes; the downside is zero; early adoption has historically paid off with such standards.
Should I also create llms-full.txt?
The extended variant inlines full content for deeper ingestion. Nice-to-have for documentation-heavy sites; start with the basic file.
Adexorb Technologies ships llms.txt, schema and full AI-crawler configuration in week one of its GEO programs – check your current setup with IndexGraph.ai.