Shopify lets AI agents finish checkout on merchant sites

Shopify's move stands out because some other retailers, like Amazon and Adidas, are blocking AI agents from making purchases on users' behalf. Shopify has instead extended its earlier WebMCP support for storefronts and carts to the checkout step, letting browser-based agents read, update, and submit a checkout with the buyer's authorization rather than relying on screenshots or scraping.

The company already offers a hosted MCP server for server-to-server agent work, and WebMCP is designed for agents inside the buyer's browser. Both rely on Shopify's Universal Commerce Protocol, which provides a common way to search for and discover products, build carts, and check out. Gil Greenberg, a staff product manager who works on agentic commerce at Shopify, said the WebMCP tools are structured APIs purposely designed via UCP to ensure accurate commerce facts, required disclosures, and handoff requirements.

The outcome may hinge on whether merchants enable the feature and whether agent-driven checkout behaves reliably in practice. For Shopify merchants, the calculation is whether letting agents complete purchases improves conversion enough to offset the loss of direct control over the final checkout step.