Shopify Opens Checkout to Browser-Based AI Agents
Shopify has extended its WebMCP support to the checkout process, enabling browser-based AI agents to complete purchases on merchant sites, including via Shop Pay. This extension is part of the Universal Commerce Protocol (UCP) developed with Google, Etsy, Wayfair, and Walmart. Three new tools—get_checkout, update_checkout, and complete_checkout—allow agents to inspect, update, and finalize orders, with buyer authorization required. Existing customizations, business rules, and security checks remain intact. In benchmarks, WebMCP reduced average time per attempt from 27.4 to 10.3 seconds, cut costs by 58%, and achieved a 100% success rate (60/60) compared to 56/60 for traditional browser automation. Rolling out to all eligible merchants, Shopify positions itself as open infrastructure for agentic commerce, partnering directly with top agents like Muse and Instinct, in contrast to retailers like Amazon and Adidas that block AI agents.