While some retailers, like Amazon：https://www.bloomberg.com/news/articles/2026-09-21/amazon-blocks-meta-s-muse-ai-agent-from-its-retail-site (and Adidas：https://x.com/kesslerIO/status/2104397316673462339, apparently!), are blocking：https://x.com/kesslerIO/status/2104397316673462339 AI agents from making purchases on users’ behalf on their respective platforms, e-commerce platform Shopify has moved in the other direction.

On Monday, the company announced：https://x.com/gilgNYC/status/2104583942728822998 that browser-based AI agents can now complete purchases on Shopify merchants’ sites, extending their capabilities beyond just searching for products and adding items to carts.

Shopify previously supported WebMCP：https://shopify.dev/docs/api/web-mcp for its storefronts and carts, allowing browser-based AI agents to comb through a Shopify retailer’s inventory, search for products, and add them to a cart. The addition of WebMCP support for checkout, including Shop Pay, means these agents can now read the checkout screen, update it, and submit the transaction with the buyer’s authorization, without relying on screenshots or scraping webpages, the company said.

This update introduces three new tools — get_checkout, update_checkout, and complete_checkout — that allow agents to inspect a checkout, change things like the customer’s address or delivery option, and then place an order after the buyer authorizes it.

The feature is rolling out to all eligible Shopify merchants, said Gil Greenberg：https://www.linkedin.com/in/gilgreenberg/, a staff product manager who works on agentic commerce at Shopify, in a post on X：https://x.com/gilgNYC/status/2104583942728822998.

Shopping with an agent shouldn’t feel like watching paint dry. 🥱 Today, we’re launching WebMCP support for checkout, including Shop Pay, for all eligible Shopify merchants. Learn how it works, where UCP fits, and what the data shows: https://t.co/U96VtJaeyc：https://t.co/U96VtJaeyc

Shopify already offers a hosted Model Context Protocol (MCP)：https://modelcontextprotocol.io/docs/2026-07-28/getting-started/intro server, which allows agents to work server-to-server. The proposed standard WebMCP：https://shopify.dev/docs/api/web-mcp, meanwhile, is designed for agents that work inside the buyer’s browser. Both leverage Shopify’s Universal Commerce Protocol：https://www.shopify.com/ucp (UCP), which provides a common way to search for and discover products, build carts, and check out.

Top AI agents like Muse：https://www.wsj.com/tech/shopify-to-use-metas-muse-for-agentic-checkout-d23947c0 and Instinct：https://x.com/noahrshinn/status/2104628465488306183 already have direct partnerships with Shopify for agentic commerce. The Instinct partnership was announced：https://x.com/noahrshinn/status/2104628465488306183 today.

“If your agent is operating in the buyer’s browser, use WebMCP tools provided on storefront and checkout to efficiently complete order placement, instead of navigating HTML built for humans,” Greenberg wrote on X. “These WebMCP tools provide structured and efficient APIs, purposely designed — via UCP — to ensure accurate commerce facts, required disclosures, and handoff requirements.”

When you purchase through links in our articles, we may earn a small commission：https://techcrunch.com/techcrunch-affiliate-monetization-standards/. This doesn’t affect our editorial independence.

Event Logo

Get 50% off a second pass The Disrupt experience is meant to be shared. Get your pass and bring a colleague, partner, or peer at 50% off. Cover more ground by making connections, building momentum, and discovering what’s next in the startup ecosystem.

Crusoe abandons $1.25B plan to use Boom turbines at AI data centers：https://techcrunch.com/2026/09/25/crusoe-abandons-1-25b-plan-to-use-boom-turbines-at-ai-data-centers/ Kirsten Korosec：https://techcrunch.com/author/kirsten-korosec/

Astra and Opus just passed Turing’s other test：https://techcrunch.com/2026/09/25/astra-and-opus-just-passed-turings-other-test/ Tim Fernholz：https://techcrunch.com/author/tim-fernholz/

Oracle sends force majeure notice on its New Mexico Stargate data center：https://techcrunch.com/2026/09/24/oracle-sends-force-majeure-notice-on-its-new-mexico-stargate-data-center/ Aditya Mehta：https://techcrunch.com/author/aditya-mehta/

Meta made a Tamagotchi-like wearable for its Muse AI agent：https://techcrunch.com/2026/09/23/meta-made-a-tamagotchi-like-wearable-for-its-muse-ai-agent/ Lucas Ropek：https://techcrunch.com/author/lucas-ropek/

Vogue sent robots down the runway at Vogue World, and people were not impressed：https://techcrunch.com/2026/09/23/vogue-sent-robots-down-the-runway-at-vogue-world-and-people-were-not-impressed/ Dominic-Madori Davis：https://techcrunch.com/author/dominic-madori-davis/

Anthropic says its biology lab has already found something big：https://techcrunch.com/2026/09/23/anthropic-says-its-biology-lab-has-already-found-something-big/ Julie Bort：https://techcrunch.com/author/julie-bort/

PitPro’s first tire-changing robot goes live in Canada：https://techcrunch.com/2026/09/23/pitpros-first-tire-changing-robot-goes-live-in-canada/ Sean O'Kane：https://techcrunch.com/author/sean-okane/