--- title: "UCP: protocol profile | Agent Ready Checkout" description: "Universal Commerce Protocol (UCP): An Apache 2.0 protocol for discovery, cart, checkout and orders between agents. Matrix status, facts and sources." canonical: https://agentreadycheckout.com/protocols/ucp site: "Agent Ready Checkout" last_updated: 2026-11-04 section: "Protocols" --- # UCP: protocol profile | Agent Ready Checkout > Universal Commerce Protocol (UCP): An Apache 2.0 protocol for discovery, cart, checkout and orders between agents. Matrix status, facts and sources. Source: https://agentreadycheckout.com/protocols/ucp Site: Agent Ready Checkout Last reviewed: 2026-11-04 Protocol profile # Universal Commerce Protocol (UCP) In short An Apache 2.0 protocol for discovery, cart, checkout and orders between agents and businesses, announced by Google and Shopify in January 2026; powers checkout in Google AI Mode and Gemini and Microsoft Copilot onboarding. For UCP, merchant of record is merchant and dispute rules are none in spec. Announced but not yet live: Worldpay, Adobe Commerce, Walmart, and 3 more. ## Fact sheet Type Protocol Operator UCP Tech Council (Google, Shopify, Etsy, Target, Wayfair, Amazon, Meta, Microsoft, Salesforce, Stripe and others) Homepage [ucp.dev](https://ucp.dev/) Discovery path /.well-known/ucp Releases v2026-01-11, v2026-01-23, v2026-04-08, v2026-08-25 Matrix reach 10 live, 4 pilot, 6 announced, 1 not supported, 6 with no statement found ## Readiness for merchants Seven rows, each read from a primary source on 4 Nov 2026. The [method page](https://agentreadycheckout.com/method) defines every row. | Rubric row | Reading | Evidence | Source and read date | | --- | --- | --- | --- | | Specification public | Yes | Specification and schemas are public at ucp.dev and on GitHub under Apache 2.0. | ucp.dev, 4 Nov 2026 | | Reference implementation | Yes | Shopify publishes a UCP CLI and Cart and Checkout MCP servers; Google publishes a developer guide and Merchant Center hub. | shopify.dev, 4 Nov 2026 | | Live surfaces | Yes | Google AI Mode and Gemini (select merchants) and Microsoft Copilot Checkout (US, USD, English) onboard through UCP. | support.google.com, 4 Nov 2026 | | Processor support | Yes | Stripe offers a UCP payment handler; Adyen a UCP tokenization handler; PayPal and Braintree a Google Pay handler path. | docs.stripe.com, 4 Nov 2026 | | Merchant of record | Merchant | ucp.dev and Google both state the business remains merchant of record. | ucp.dev, 4 Nov 2026 | | Dispute rules | None in spec | UCP defines checkout, identity linking and consent; disputes follow the card network rules of the credential used. | ucp.dev, 4 Nov 2026 | | Cost | No protocol fee | Apache 2.0; Google publishes no checkout fee on its UCP help page; processing fees apply through the merchant PSP. | support.google.com, 4 Nov 2026 | ## The row in full: every column | Column | Status | Note | Source and read date | | --- | --- | --- | --- | | Stripe | live | Stripe Payments handler for UCP checkouts documented; Stripe on UCP Tech Council | docs.stripe.com, 4 Nov 2026 | | Adyen | pilot | UCP Tokenization Handler documented; limited availability at launch | adyen.com, docs.adyen.com, 4 Nov 2026 | | PayPal | live | Agent Ready UCP path for Google AI Mode and Gemini via Google Pay handler and Orders v2 | developer.paypal.com, 4 Nov 2026 | | Checkout.com | pilot | Page says it processes UCP via Google Pay rails; waitlist; ucp.dev endorser | checkout.com, 4 Nov 2026 | | Braintree | live | Agent Ready UCP path: Google Pay single-use token processed through Braintree | developer.paypal.com, 4 Nov 2026 | | Worldpay | announced | Worldpay says it is working across UCP and is a ucp.dev endorser; no handler docs found | worldpay.com, 4 Nov 2026 | | Coinbase | no statement found | no statement found (2026-11-04) | docs.cdp.coinbase.com, 4 Nov 2026 | | Crossmint | live | Agent Commerce Toolkit picks UCP as a checkout path where merchants support it | crossmint.com, 4 Nov 2026 | | Skyfire | no statement found | no statement found (2026-11-04) | docs.skyfire.xyz, 4 Nov 2026 | | PayOS | no statement found | no statement found (2026-11-04) | payos.ai, 4 Nov 2026 | | Shopify | live | UCP co-developer; Cart, Checkout and Order MCP servers at /api/ucp/mcp; agent profiles self-serve since Spring '26 | shopify.com, 4 Nov 2026 | | BigCommerce | pilot | Google UCP checkout in early access via Commerce AI Labs for select US merchants | bigcommerce.com, 4 Nov 2026 | | Salesforce CC | live | Innovations page lists UCP Integration GA Oct '26 for checkout in Gemini and Google AI Mode; merchant stays MoR | salesforce.com, 4 Nov 2026 | | Adobe Commerce | announced | Committed to UCP on 2026-02-18 | business.adobe.com, 4 Nov 2026 | | commercetools | live | AI Hub GA: Gemini discovery through checkout via UCP with Adyen, Stripe, CyberSource or Worldpay Access | docs.commercetools.com, 4 Nov 2026 | | WooCommerce | pilot | WooCommerce AI documentation: turning on agentic commerce makes the store's UCP services available to compatible shopping agents | woocommerce.com, 4 Nov 2026 | | Amazon | not supported | Joined the UCP Tech Council on 24 Apr 2026; robots.txt disallows GoogleAgent-Shopping, and no UCP checkout was found on Amazon | amazon.com, github.com, 4 Nov 2026 | | Walmart | announced | Walmart and Google announced a Walmart-built Gemini shopping experience using UCP on 11 Jan 2026; no Walmart or Google page found says it is live | corporate.walmart.com, 4 Nov 2026 | | Target | live | Fact sheet: shoppers buy from Target in Google AI Mode and Gemini via UCP, which Target co-developed | corporate.target.com, 4 Nov 2026 | | Etsy | announced | Etsy is a member of the UCP Technical Council; no Etsy page found names UCP checkout | github.com, 4 Nov 2026 | | Wayfair | announced | UCP co-developer; Wayfair said UCP checkout in AI Mode and Gemini is coming | aboutwayfair.com, 4 Nov 2026 | | ChatGPT | no statement found | no statement found (2026-11-04) | chatgpt.com, 4 Nov 2026 | | Google AI Mode | live | UCP checkout in AI Mode and Gemini with Google Pay for select merchants; US, CA, AU eligible products; merchant stays MoR. | support.google.com, 4 Nov 2026 | | Perplexity | no statement found | no statement found (2026-11-04) | perplexity.ai, 4 Nov 2026 | | Amazon Rufus | no statement found | no statement found (2026-11-04) | aboutamazon.com, 4 Nov 2026 | | Meta Muse | announced | WSJ via AI Weekly: Shopify says Muse will complete Shopify orders through UCP by default. No Meta statement found. | aiweekly.co, 4 Nov 2026 | | Copilot | live | Copilot Checkout onboarding requires a Microsoft Merchant Center account with a UCP-compliant feed; US, USD, English only. | about.ads.microsoft.com, 4 Nov 2026 | | | | 14 live or pilot of 27 | | | | ## What UCP does not do - Does not move funds: payment runs through the merchant PSP via a payment handler. - Does not use network agentic tokens on Google today: the help page says standard FPANs. - Does not guarantee access: Google and Microsoft gate merchants by interest form, country and feed quality. ## Sourced facts - Shopify announced UCP on 11 Jan 2026 as an open standard co-developed with Google, endorsed by more than 20 retailers and platforms and compatible with any payment processor. [shopify.com](https://www.shopify.com/news/ai-commerce-at-scale), read 4 Nov 2026. - ucp.dev lists shopping co-developers Google, Shopify, Etsy, Wayfair, Target, Walmart, Amazon, Microsoft, Meta, Salesforce and Stripe, and states that businesses "remain the Merchant of Record". [ucp.dev](https://ucp.dev/), read 4 Nov 2026. - Businesses publish their UCP profile at /.well-known/ucp; platforms send their own profile URI per request in the UCP-Agent header. [ucp.dev](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026. - The spec defines transports rest (OpenAPI 3.x), mcp (OpenRPC), a2a (Agent Card) and embedded (OpenRPC), and a payment\_handlers registry that must be present even when empty. [ucp.dev](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026. - GitHub releases: v2026-01-11, v2026-01-23, v2026-04-08 and v2026-08-25; the August release added 3DS2 actions, split PAN and network token credentials, installments, split payments and grocery capabilities. [github.com](https://github.com/Universal-Commerce-Protocol/ucp/releases/tag/v2026-08-25), read 4 Nov 2026. - Amazon, Meta, Microsoft, Salesforce and Stripe joined the UCP Tech Council on 24 Apr 2026, alongside current members Google, Shopify, Etsy, Target and Wayfair. [github.com](https://github.com/Universal-Commerce-Protocol/ucp/discussions/379), read 4 Nov 2026. - Google's Merchant Center help says UCP checkout puts a Buy button on eligible listings in AI Mode and Gemini "while keeping you the merchant of record", for select merchants, using standard card numbers (FPANs) from Google Wallet today. [support.google.com](https://support.google.com/merchants/answer/16837055), read 4 Nov 2026. - Shopify made its UCP agent access self-serve in the Spring 26 Edition developer post on 17 Jun 2026: developers register an agent profile and call the public MCP endpoint without approval. [shopify.com](https://shopify.com/news/spring-26-edition-dev), read 4 Nov 2026. - Microsoft requires a UCP-compliant Merchant Center feed, or a trusted partner, to onboard to Copilot Checkout. [about.ads.microsoft.com](https://about.ads.microsoft.com/en/solutions/technology/agentic-commerce), read 4 Nov 2026. - Google said on 16 Sep 2026 that UCP already enables direct checkout for hundreds of thousands of brands. [blog.google](https://blog.google/products-and-platforms/products/shopping/google-shopping-updates-holiday-shopping/), read 4 Nov 2026.Vendor claim - In the shared crawl of 4 Nov 2026, Shopify stores such as allbirds.com and gymshark.com answer /.well-known/ucp with JSON; homedepot.com, barnesandnoble.com, wyzecam.com and bitdefender.com answered /.well-known/ucp.json with a ucp object. [ucp.dev](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026. ## In the vendors section - [Google Pay](https://agentreadycheckout.com/vendors/google-pay), wallet profile - [Shop Pay](https://agentreadycheckout.com/vendors/shop-pay), wallet profile - [Shopify](https://agentreadycheckout.com/vendors/shopify), commerce platform profile - [VTEX](https://agentreadycheckout.com/vendors/vtex), commerce platform profile - [Google (AI Mode and Gemini checkout)](https://agentreadycheckout.com/vendors/google-ai-mode-gemini), agent surface profile - [Chewy](https://agentreadycheckout.com/vendors/chewy), retailer profile - [The Home Depot](https://agentreadycheckout.com/vendors/home-depot), retailer profile ## Compare and alternatives - [ACP vs UCP](https://agentreadycheckout.com/compare/acp-vs-ucp) - [UCP vs AP2](https://agentreadycheckout.com/compare/ucp-vs-ap2) - [UCP vs x402](https://agentreadycheckout.com/compare/ucp-vs-x402) ## Sources 1. [ucp.dev/](https://ucp.dev/), read 4 Nov 2026 2. [shopify.com/news/ai-commerce-at-scale](https://www.shopify.com/news/ai-commerce-at-scale), read 4 Nov 2026 3. [UCP specification overview](https://ucp.dev/latest/specification/overview/), read 4 Nov 2026 4. [UCP release v2026-08-25](https://github.com/Universal-Commerce-Protocol/ucp/releases/tag/v2026-08-25), read 4 Nov 2026 5. [github.com/Universal-Commerce-Protocol/ucp/discussions/379](https://github.com/Universal-Commerce-Protocol/ucp/discussions/379), read 4 Nov 2026 6. [Merchant Center help: UCP-powered checkout](https://support.google.com/merchants/answer/16837055), read 4 Nov 2026 7. [shopify.com/news/spring-26-edition-dev](https://shopify.com/news/spring-26-edition-dev), read 4 Nov 2026 8. [Agentic Commerce, Microsoft Advertising](https://about.ads.microsoft.com/en/solutions/technology/agentic-commerce), read 4 Nov 2026 9. [Boost your holiday sales with these agentic commerce updates](https://blog.google/products-and-platforms/products/shopping/google-shopping-updates-holiday-shopping/), read 4 Nov 2026 10. [shopify.dev/docs/agents](https://shopify.dev/docs/agents), read 4 Nov 2026 11. [docs.stripe.com/agentic-commerce/protocols/ucp.md](https://docs.stripe.com/agentic-commerce/protocols/ucp.md), read 4 Nov 2026 12. [adyen.com/press-and-media/adyen-agentic](https://www.adyen.com/press-and-media/adyen-agentic), read 4 Nov 2026 13. [developer.paypal.com/agent-ready/overview](https://developer.paypal.com/agent-ready/overview), read 4 Nov 2026 14. [checkout.com/agentic-commerce](https://www.checkout.com/agentic-commerce), read 4 Nov 2026 15. [worldpay.com/en/agentic-commerce](https://www.worldpay.com/en/agentic-commerce), read 4 Nov 2026 16. [crossmint.com/announcement/agent-commerce-toolkit-launch](https://crossmint.com/announcement/agent-commerce-toolkit-launch), read 4 Nov 2026 17. [bigcommerce.com/articles/ecommerce/google-agentic-checkout/](https://www.bigcommerce.com/articles/ecommerce/google-agentic-checkout/), read 4 Nov 2026 18. [salesforce.com/commerce/innovations/](https://www.salesforce.com/commerce/innovations/), read 4 Nov 2026 19. [business.adobe.com/blog/adobe-commerce-commits-to-agentic-commerce-standards](https://business.adobe.com/blog/adobe-commerce-commits-to-agentic-commerce-standards), read 4 Nov 2026 20. [docs.commercetools.com/api/releases/2026-07-30-ai-hub-is-now-generally-available](https://docs.commercetools.com/api/releases/2026-07-30-ai-hub-is-now-generally-available), read 4 Nov 2026 21. [woocommerce.com/document/woocommerce-ai/agentic-commerce/](https://woocommerce.com/document/woocommerce-ai/agentic-commerce/), read 4 Nov 2026 22. [amazon.com/robots.txt](https://www.amazon.com/robots.txt), read 4 Nov 2026 23. [corporate.walmart.com/news/2026/01/11/walmart-and-google-turn-ai-discovery-into-effortless-shopping-experiences](https://corporate.walmart.com/news/2026/01/11/walmart-and-google-turn-ai-discovery-into-effortless-shopping-experiences), read 4 Nov 2026 24. [corporate.target.com/press/fact-sheet/2026/01/google-gemini-2026](https://corporate.target.com/press/fact-sheet/2026/01/google-gemini-2026), read 4 Nov 2026 25. [aboutwayfair.com/category/tech-innovation/wayfair-partners-with-google-to-make-it-easier-to-shop-for-your-home](https://www.aboutwayfair.com/category/tech-innovation/wayfair-partners-with-google-to-make-it-easier-to-shop-for-your-home), read 4 Nov 2026 26. [Shopify branche Muse de Meta sur son Catalog et UCP par defaut](https://aiweekly.co/fr/alerts/shopify-branche-muse-de-meta-sur-son-catalog-et-ucp-par-dfaut), read 4 Nov 2026 Last reviewed 4 Nov 2026 ## Edition Matrix edition of 4 Nov 2026. Reviewed 4 Nov 2026, [26 sources](#sources-h). ## Method [How cells, sources and read dates are defined](https://agentreadycheckout.com/method)