Browser agents can now read and update Shopify checkouts using WebMCP tools for checkout. The tools let agents interact with the active checkout in the buyer’s browser session.
With storefront and cart tools already live, browser agents can now assist the full shopping journey on Shopify, from product discovery and cart management through checkout and order confirmation.
Tools available at checkout:
- navigate_to_storefront
- get_checkout — read checkout state, messages, and post-completion order details
- update_checkout — update supported checkout fields
- complete_checkout — submit checkout after buyer confirmation
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.
Checkout WebMCP implements the UCP checkout capability over browser-registered WebMCP tools instead of server-side JSON-RPC.