Shopify now serves agents.md on my store. Do I need to install or write one?
Shopify now serves agents.md, llms.txt, and llms-full.txt on every store by default. A theme template can replace them, so read what yours says.
- When this applies
- An app or a vendor offers to install agents.md or llms.txt on your storefront, or your store already serves one that you did not write. [1]
- When this does not apply
- Take no install action. Since May 28, 2026, every Shopify store serves a default agents.md at /agents.md, and /llms.txt and /llms-full.txt point to that content unless a theme template replaces them. [1]
- Why this matters
- The three paths are served from the theme's templates when they exist, so an app that once wrote a template now overrides Shopify's default, and that file is what an agent reads first. [1]
- What to do, or not do
- Open /agents.md on your store and read it. Then open Online Store, Themes, Edit code, and look for templates/agents.md.liquid, templates/llms.txt.liquid, or templates/llms-full.txt.liquid. Keep a template only when you chose its content. [1]
- What you'll see when it's done
- You can name the writer of each of the three paths on your store, and every template that exists is one you chose and can explain. [1]
- What this result does not prove
- A served file proves what an agent would read if it fetched that path. It does not prove that any agent fetched it, or that it changed a ranking or a sale. [1]
- Sources checked
- September 5, 2026
- Changed
- May 28, 2026
When a third party is worth paying for, and what you do not have to buy
- When paid help is worth it
- Paid help is worth it only when you run a headless storefront that Shopify's theme templates do not serve, and a developer must publish the equivalent files there. [1]
- What you do not have to buy
- Shopify serves the default files and lets you customize each path with a theme template at no charge, so an install service adds nothing a hosted store lacks. [1]
Shopify’s developer changelog dated May 28, 2026 states that your store includes a default agents.md file accessible at /agents.md, and that the paths /llms.txt and /llms-full.txt also point to this content by default. A merchant customizes any of the three by adding a template under Online Store, Themes, Edit code: templates/agents.md.liquid controls /agents.md and the default for the other two paths, templates/llms.txt.liquid controls /llms.txt only, and templates/llms-full.txt.liquid controls /llms-full.txt only. Shopify checks for a custom template before falling back to its default content.
That is the whole change. No install, no app, no setting. The one thing worth checking is who wrote the file your store serves at that path.
Why the writer matters
The fallback order means a template wins. Before May 28, 2026, several apps wrote llms.txt or agents.md templates into themes because the store served nothing at those paths. Those templates are still in the theme, and now they replace Shopify’s default rather than filling a gap. An agent that fetches /agents.md reads the app’s text, including whatever the app chose to say about your store and any attribution or link it added.
The Answer on vendor llms.txt claims covers what those files can and cannot do for visibility. This one is narrower: know which file you are serving.
What to do
- Open
https://your-store-domain/agents.mdin a signed-out window and read it. Do the same for/llms.txtand/llms-full.txt. - Open Online Store, then Themes, then Edit code for the live theme, and look in
templatesforagents.md.liquid,llms.txt.liquid, andllms-full.txt.liquid. - For each template that exists, decide whether you chose its content. A template you can explain stays. A template an app wrote that you never reviewed is one to read, and to delete if you would rather serve Shopify’s default; deleting a template restores the default at that path.
- Repeat for any unpublished theme you may publish later, since a template travels with its theme.
The observable result is a note naming the writer of each of the three paths on your store, and a theme whose templates are all ones you chose. It proves what an agent would read at those paths. It does not prove that any agent fetched them, or that the files changed a ranking or a sale.