Does Your Small Business Need an llms.txt File?
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Probably not. llms.txt is a proposed text file that summarises a website for AI tools, mainly useful for software documentation. Google says Google Search, including AI Overviews and AI Mode, doesn't use it, and that having one won't help or hurt you there. For a local business, time spent on your Google profile, reviews and service pages will do far more.
What is llms.txt?
It's a plain Markdown file placed at yoursite.com/llms.txt that lists a site's key pages with short descriptions. It started as a proposal published in 2024 on llmstxt.org, aimed at helping AI agents find the information they need. It isn't an official web standard, and it doesn't control whether AI crawlers can use your content; that's still robots.txt.
What does Google say?
Google's guide to generative AI features on Search says you don't need to create new machine-readable files, AI text files, markup or Markdown to appear in Google Search or its AI features, because Search itself doesn't use them (Google). Separately, Google says there are no extra technical requirements to appear in AI Overviews or AI Mode beyond being indexed and eligible to show with a snippet (Google).
So why does anyone use it?
Chrome's Lighthouse tool includes an experimental agentic browsing check that looks for llms.txt, to help AI agents browsing a site understand it (Chrome for Developers). It's also used by software companies so coding assistants can read their documentation. Those uses have little to do with a plumber or accountant in Melbourne being found by customers.
Should a local business add one?
| Situation | Our view |
|---|---|
| Tradie, clinic or local service business | Not a priority. Do the basics first |
| Site with lots of guides or documentation | Optional, low effort, low expected benefit |
| Someone is selling you llms.txt as an AI ranking fix | Be sceptical; Google says Search doesn't use it |
These are our recommendations, not Google's.
What will actually help with AI search?
- A complete, active Google Business Profile
- Recent reviews. See how to get more Google reviews
- Clear service and suburb pages that answer real questions
- Consistent details everywhere. See how to check NAP consistency
- Correct LocalBusiness schema for accuracy, not as an AI trick
If you add one anyway
Keep it short: your business name, a one-line description, and links to your main service, area, about and contact pages. Make sure it doesn't contradict your website, and update it when pages change. It takes 15 minutes, and Google says it won't harm your Google rankings.
What does an llms.txt file look like?
It's a short text file written in Markdown. The proposal suggests a title, a one-line summary, then lists of links with short notes. A made-up example for a local electrician:
# Example Electrical
> Licensed electricians serving Melbourne's west: switchboards, lighting, safety inspections and emergency repairs.
## Services
- [Switchboard upgrades](https://www.example.com.au/switchboards): replacing old fuse boxes
- [Emergency electrician](https://www.example.com.au/emergency): call-outs across Brimbank and Melton
## About
- [About us](https://www.example.com.au/about)
- [Contact](https://www.example.com.au/contact)
That's the whole thing. It doesn't replace any page on your site; it points to them.
How is it different from robots.txt and a sitemap?
Three files with similar-sounding names do different jobs:
| File | What it does | Who reads it |
|---|---|---|
| robots.txt | Tells crawlers which parts of your site they may or may not crawl | Search engines and many other crawlers |
| sitemap.xml | Lists the pages you want search engines to know about | Search engines such as Google and Bing |
| llms.txt | A proposed summary of key pages for AI tools | Some AI tools and agents; Google Search says it doesn't use it (Google) |
For a local business, a working sitemap and a sensible robots.txt matter far more than llms.txt. Most website platforms create both for you; check they exist and aren't blocking important pages.
Can you control whether AI tools use your content?
Partly. Your robots.txt file can allow or block specific crawlers by name, and several AI companies publish the names of the crawlers they use. That's a decision about your content, not a way to get recommended.
- Don't block Google's main search crawler; that would remove you from Google Search, including its AI features
- If you want to limit a particular AI company's crawler, check that company's own documentation for its crawler name and rules
- Remember that blocking a crawler doesn't remove information that's already elsewhere, such as your Google profile or directory listings
- Write down any changes you make, so a future website developer knows why they're there
For most small businesses that want to be found, the simplest choice is to leave crawlers allowed and focus on accurate information.
How do AI tools learn about local businesses?
Each AI tool works differently, and most don't publish exactly how they choose businesses to mention. Google does say its AI Overviews and AI Mode draw on pages that are indexed and eligible to appear in Search with a snippet (Google).
In practice, that means the same things that help you in ordinary search help here: a clear website, a complete Google Business Profile, consistent details across listings, and genuine reviews. There's no separate file or trick that replaces them.
What should you ask anyone selling AI search services?
AI search is new, and some sellers promise more than anyone can deliver. Before you pay, ask:
- "Which specific changes will you make to my website and listings?"
- "What does Google's own guidance say about this?" Google says Search doesn't need special AI files or markup (Google)
- "How will we measure whether it worked?"
- "Will this also help my normal Google results and my customers?" If not, be wary
- "Can I see examples for businesses like mine, with permission?"
A good answer focuses on your profile, reviews, content and website basics. An answer built around a secret file or a guaranteed AI ranking is a warning sign.
Can an llms.txt file hurt your site?
Not in Google Search. Google says Search doesn't use it, so having one won't help or hurt you there (Google). The real risks are smaller and practical:
- It goes out of date when your pages change, and points AI tools at pages that no longer exist
- It describes services you've stopped offering, or uses an old business name
- Someone charges you for it as if it were a ranking fix
If you add one, put it on the same checklist as your sitemap and Google profile, and review it whenever you change your website.
If you have an hour to spend on being found, by people or by AI tools, these will do more for a local business than any new file:
- Check your Google Business Profile is complete: categories, services, hours, photos and description
- Ask your last five happy customers for a review
- Make sure each main service has its own page on your website, answering the questions customers ask
- Check your name, address and phone match everywhere. See NAP consistency
- Add or check your LocalBusiness schema so your details are clear
This fits Google's own guidance that there are no extra technical requirements for its AI features beyond the normal Search basics (Google). The same work helps with ordinary search and with real customers at the same time.
Every few months, ask a few AI assistants simple questions about your business and your trade in your area, the way a customer would. Note what they say.
- Ask: "Who are some [trade] businesses in [suburb]?" and "What does [your business name] do?"
- Check whether the details they give, like your phone, area and services, are correct
- If something is wrong, fix it at the source: your website, Google profile and directory listings
- Don't expect to appear every time; answers vary between tools and from day to day
For a closer look at how these tools answer local questions, see we asked ChatGPT, Gemini and Perplexity to recommend Melbourne tradies.
Morphic focuses Melbourne small businesses on the search basics that work for Google and AI tools alike. Get a free quote, or book a 30-minute call.
Related services: local SEO and web design.
Related reading: AI Search for Local Businesses and we asked ChatGPT, Gemini and Perplexity to recommend Melbourne tradies.
Related reading. Search Console for business owners.
Key Takeaways
llms.txt is a proposed AI summary file, not an official standard.
Google says its Search and AI features don't use it.
Its real uses are documentation sites and AI agents, not local search.
Google profile, reviews and clear service pages matter far more.
If you add one, keep it short and accurate.
Emon Datta
Founder, Morphic Agency
Morphic Agency is a Melbourne-based UX design agency. We've shipped 50+ products across 15+ countries.
