A

Discovery

INFO

llms.txt present (informational)

An /llms.txt manifest is reachable at the site root (informational; never fails). An /llms.txt manifest points agents at your feed and key pages without them having to guess.

What this check looks for

llms.txt is a community convention defined at llmstxt.org. It lets a merchant point LLM-driven agents at structured resources (the product feed, policy pages, taxonomy). v2 treats the check as report-only: presence is a small positive signal, but absence is not a defect — no shipping vendor or RFC requires it. The check returns `pass` when the file is reachable, `na` when it isn't, and never `fail`.

Which AI surfaces it affects

  • ChatGPT (ACP)10
  • Google AI Mode (UCP)10
  • Perplexity10
  • Microsoft Copilot10
  • Meta AI10

Weighted against the live specs — ACP 2026-04-17, UCP 2026-04-08.

How to fix it

Publish an /llms.txt manifest (optional)

Shopify

A few minutes
  1. Online Store → Themes → Edit code → Add a new template: `templates/llms.txt.liquid` (Shopify serves it as text).
  2. Author the manifest as markdown starting with `# {{ shop.name }}`.

BigCommerce

Developer
  1. Add a static file route in your storefront for `/llms.txt`.
  2. Serve the file with `Content-Type: text/plain`.

WooCommerce

A few minutes
  1. Upload `llms.txt` to the WordPress root via SFTP or your hosting file manager.
  2. Confirm it serves as `text/plain` (most hosts do automatically).

Custom / headless

A few minutes
  1. Serve a plain-text file at `/llms.txt` with `Content-Type: text/plain`.
  2. Start with `# Your Store Name` then list key pages as markdown links.
# Acme Goods

> Specialty home goods made in Portland, OR.

## Catalog
- [Product feed (Google Merchant XML)](https://example.com/feed.xml)
- [All products (HTML)](https://example.com/collections/all)

## Policies
- [Returns](https://example.com/policies/refund-policy)
- [Shipping](https://example.com/policies/shipping-policy)

## Contact
- support@example.com

The spec it's pinned to

  • llmstxt.org — /llms.txt manifest

    llms.txt is a community convention (llmstxt.org, not a vendor or RFC spec) where merchants point LLM-driven agents at structured resources. Adoption is voluntary; absence is not a defect.

llmstxt.org ↗

Does your store pass this check?

Run the full audit — 82 checks across five AI shopping surfaces. Most tools only check whether you get mentioned; we check whether an agent can buy from you.

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