---
title: The UCP profile on your domain
description: How shopping agents discover that your store supports agent checkout.
---

Shopping agents discover that your store supports agent checkout by requesting `/.well-known/ucp` on your domain. The plugin serves this file, but the content comes from Sarvex — the plugin is just the doorway.

- It's cached for an hour, so a brief Sarvex outage doesn't break it — your store keeps serving the last known-good version.
- It never requires authentication and never redirects; it just returns the file.
- You don't maintain or edit this yourself.