---
title: >-
  WebMCP support for Liquid and Hydrogen storefronts - 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.
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  html: 'https://shopify.dev/changelog/webmcp-liquid-hydrogen'
  md: 'https://shopify.dev/changelog/webmcp-liquid-hydrogen.md'
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  createdAt: '2026-07-14T04:46:44-04:00'
  postedAt: '2026-08-05T11:00:00-04:00'
  updatedAt: '2026-08-05T11:18:10-04:00'
  effectiveAt: '2026-08-21T12:00:00-04:00'
---

# WebMCP support for Liquid and Hydrogen storefronts

DateAugust 5, 2026

FlagsNew

SurfacesPlatform

Online stores now expose WebMCP tools that AI agents can call. Agents can search your catalog, manage the shopper's cart, and go to checkout on the shopper's behalf, all in the tab they're looking at.

The tools work through [WebMCP](https://developer.chrome.com/docs/ai/webmcp), a proposed web standard that lets a page register tools with the browser. Without it, agents have to read every page's code and simulate clicks, which is slow and error-prone. The tools are live today on every Liquid storefront and on the [Hydrogen developer preview](https://hydrogen.shopify.dev/update/hydrogen-developer-preview). There's nothing to install or configure.

Everything an agent does happens on the shopper's live session. Cart tools call the same standard storefront actions that apps use, so if your theme opens a cart drawer on updates, agents trigger it too.

Here's what agents can call:

* **Catalog:** `search_catalog`, `browse_store`, `get_product`, and `show_variant`
* **Cart:** `get_cart`, `update_cart`, and `cancel_cart`
* **Checkout and orders:** `proceed_to_checkout` and `manage_orders`
* **Other content:** `search_shop_policies_and_faqs`

WebMCP is still an emerging standard, and agent support is currently limited to Chromium-based browsers through an [origin trial](https://developer.chrome.com/docs/web-platform/origin-trials). Shopify is helping shape the [specification](https://github.com/webmachinelearning/webmcp) alongside Google and Microsoft.

Learn more in the [WebMCP docs](https://shopify.dev/docs/api/web-mcp). If you're building your own agent, see [Build commerce agents](https://shopify.dev/docs/agents).