---
title: WebMCP support for checkout - Shopify developer changelog
description: >-
  Shopify’s developer changelog documents all changes to Shopify’s platform.
  Find the latest news and learn about new platform opportunities.
source_url:
  html: 'https://shopify.dev/changelog/posts/webmcp-support-for-checkout'
  md: 'https://shopify.dev/changelog/posts/webmcp-support-for-checkout.md'
metadata:
  effectiveApiVersion: ''
  affectedApi: []
  primaryTag:
    displayName: Platform
    handle: platform
  secondaryTag:
    displayName: New
    handle: new
  indicatesActionRequired: false
  createdAt: '2026-09-25T09:59:27-04:00'
  postedAt: '2026-09-28T10:30:00-04:00'
  updatedAt: '2026-09-28T10:06:32-04:00'
  effectiveAt: '2026-09-28T12:00:00-04:00'
---

September 28, 2026

# WebMCP support for checkout

DateSeptember 28, 2026

FlagsNew

SurfacesPlatform

Browser agents can now read and update Shopify checkouts using [WebMCP tools for checkout](http://shopify.dev/docs/agents/carts-and-checkout/checkout-webmcp). The tools let agents interact with the active checkout in the buyer’s browser session. When the buyer’s input is required, such as 3D Secure authentication or for blocking UI extensions, the tools hand back control to the buyer.

With [storefront and cart tools](https://shopify.dev/changelog/webmcp-liquid-hydrogen) already live, browser agents can now assist the full shopping journey on Shopify, from product discovery and cart management through checkout and order confirmation. These tools serve agents that shop your store from their browser.

Here's what agents can call at checkout:

* Navigate to storefront: `navigate_to_storefront`
* Read checkout state, messages, and post-completion order details: `get_checkout`
* Update supported checkout fields: `update_checkout`
* Submit checkout after buyer confirmation: `complete_checkout`

The tools run inside checkout-web and use the same state as the checkout UI. They don't expose a new API or require merchant configuration.

Learn more about [WebMCP tools for checkout](http://shopify.dev/docs/agents/carts-and-checkout/checkout-webmcp) and [building commerce agents](https://shopify.dev/docs/agents).