---
title: "/.well-known/ucp, defined | Agent Ready Checkout"
description: "/.well-known/ucp: The path where a business publishes its UCP profile listing services, capabilities and payment handlers."
canonical: https://agentreadycheckout.com/glossary/well-known-ucp
site: "Agent Ready Checkout"
last_updated: 2026-11-04
section: "Glossary"
---

# /.well-known/ucp, defined | Agent Ready Checkout

> /.well-known/ucp: The path where a business publishes its UCP profile listing services, capabilities and payment handlers.

Source: https://agentreadycheckout.com/glossary/well-known-ucp
Site: Agent Ready Checkout
Last reviewed: 2026-11-04

Glossary

# /.well-known/ucp

In short

/.well-known/ucp: The path where a business publishes its UCP profile listing services, capabilities and payment handlers. /.well-known/ucp appears in 4 sourced facts on this site, the first in Universal Commerce Protocol (UCP). Example: allbirds.com returned JSON at /.well-known/ucp on 4 Nov 2026. After /.well-known/ucp the glossary lists Instant Checkout.

## Definition

The path where a business publishes its UCP profile listing services, capabilities and payment handlers.

## Example

allbirds.com returned JSON at /.well-known/ucp on 4 Nov 2026. [ucp.dev](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026.

## Where it appears in the sourced facts

-   Businesses publish their UCP profile at /.well-known/ucp; platforms send their own profile URI per request in the UCP-Agent header. [ucp.dev](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026. In [Universal Commerce Protocol (UCP)](https://agentreadycheckout.com/protocols/ucp).
-   In the shared crawl of 4 Nov 2026, Shopify stores such as allbirds.com and gymshark.com answer /.well-known/ucp with JSON; homedepot.com, barnesandnoble.com, wyzecam.com and bitdefender.com answered /.well-known/ucp.json with a ucp object. [ucp.dev](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026. In [Universal Commerce Protocol (UCP)](https://agentreadycheckout.com/protocols/ucp).
-   UCP: the business publishes a profile at /.well-known/ucp; the platform sends its own profile URI in the UCP-Agent header; capabilities are negotiated and a payment handler is chosen from the payment\_handlers registry. [ucp.dev](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026. In [How an agent checkout actually flows, per protocol](https://agentreadycheckout.com/guides/how-an-agent-checkout-flows).
-   On 4 Nov 2026 allbirds.com and gymshark.com returned JSON at /.well-known/ucp. [ucp.dev](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026. In [How to support UCP on Shopify](https://agentreadycheckout.com/guides/support-ucp-on-shopify).

## Nearby terms

-   [Instant Checkout](https://agentreadycheckout.com/glossary/instant-checkout)
-   [Buy for Me](https://agentreadycheckout.com/glossary/buy-for-me)
-   [Agent profile](https://agentreadycheckout.com/glossary/agent-profile)
-   [All terms](https://agentreadycheckout.com/glossary)

## Sources

1.  [UCP specification overview](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026

Last reviewed 4 Nov 2026

## Edition

Matrix edition of 4 Nov 2026.

Reviewed 4 Nov 2026, [1 sources](#sources-h).

## Method

[How cells, sources and read dates are defined](https://agentreadycheckout.com/method)