--- title: "News: dated changes to agent checkout | Agent Ready Checkout" description: "Dated news on agent checkout from August to November 2026: Visa rules, Mastercard Agent Pay, Shopify, Google, Amazon and x402, each linked to its source." canonical: https://agentreadycheckout.com/news site: "Agent Ready Checkout" last_updated: 2026-11-04 date: 2026-11-04 section: "News" --- # News: dated changes to agent checkout | Agent Ready Checkout > Dated news on agent checkout from August to November 2026: Visa rules, Mastercard Agent Pay, Shopify, Google, Amazon and x402, each linked to its source. Source: https://agentreadycheckout.com/news Site: Agent Ready Checkout Last reviewed: 2026-11-04 # News: what changed in agent checkout In short 27 dated items from 14 Aug 2026 to 4 Nov 2026 that change the matrix or the rules tracker: surface launches, protocol releases, rulebook edits and a court order. Each item names its source and says whether it is a primary document or trade press. ## November 2026 - 4 Nov 2026 [**Google brings UCP-powered direct checkout to Canada on AI Mode and Gemini**](https://agentreadycheckout.com/news/2026-11-04-google-brings-ucp-powered-direct-checkout-to-canada-on) Google says UCP-powered direct checkout is rolling out from 4 Nov 2026 to Canadian shoppers on AI Mode in Google Search and the Gemini app, for eligible retailers including lululemon, select Shopify merchants. - 3 Nov 2026 [**Mastercard discloses an OpenAI agreement that includes Agent Pay**](https://agentreadycheckout.com/news/2026-11-03-mastercard-discloses-an-openai-agreement-that-includes)Trade press The Paypers reports that Mastercard disclosed an agreement with OpenAI on its Q3 2026 earnings call, covering Agent Pay, payments, services and AI transformation. ## October 2026 - 24 Oct 2026 [**Visa Core Rules October 2026 edition names agent provider login IDs in 10.4 evidence**](https://agentreadycheckout.com/news/2026-10-24-visa-core-rules-october-2026-edition-names-agent) The 24 Oct 2026 Visa Core Rules keep the April agentic platform requirements (section 4.1.23) and update Dispute Condition 10.4 invalid-dispute evidence (section 11.8.5.3, last updated Oct 2026). - 21 Oct 2026 [**Walmart announces Agent Profiles, an MCP Agent Gateway beta and terms for AI agents**](https://agentreadycheckout.com/news/2026-10-21-walmart-announces-agent-profiles-an-mcp-agent-gateway) Walmart will let customers authorise each AI agent with its own profile inside their account, with approval on every purchase or a customer-set spending limit. - 20 Oct 2026 [**Mastercard opens Agent Pay for Machines Early Access after pilots including Coinbase**](https://agentreadycheckout.com/news/2026-10-20-mastercard-opens-agent-pay-for-machines-early-access) At Cloudflare Connect, Mastercard opened Early Access to Agent Pay for Machines, giving developers APIs, tools and documentation, after end-to-end pilots with Cloudflare, Ant International, AIsa, Base, BVNK, Coinbase and Hype. - 16 Oct 2026 [**Shopify Checkout MCP and Cart MCP add UCP buyer consent**](https://agentreadycheckout.com/news/2026-10-16-shopify-checkout-mcp-and-cart-mcp-add-ucp-buyer-consent) Shopify's changelog says its Checkout MCP and Cart MCP servers now support the UCP buyer consent capability. - 15 Oct 2026 [**Google Universal Cart launches in the US across Search and Gemini**](https://agentreadycheckout.com/news/2026-10-15-google-universal-cart-launches-in-the-us-across-search) Google's Universal Cart is available in the US across Search and the Gemini app. - 13 Oct 2026 [**Shopify launches Shop MCP with Shop Pay checkout for any agent**](https://agentreadycheckout.com/news/2026-10-13-shopify-launches-shop-mcp-with-shop-pay-checkout-for) Shop MCP at mcp.shop.com gives an MCP agent Catalog search over 1 billion products without an API key for search, cart building and Shop Pay checkout. - 9 Oct 2026 [**Shopify sets 2026-11-02 shutdown for the Global Catalog REST API**](https://agentreadycheckout.com/news/2026-10-09-shopify-sets-2026-11-02-shutdown-for-the-global-catalog) Shopify announced the Global Catalog REST API stops serving traffic on 2 November 2026, pushing agent developers onto the Catalog API and UCP MCP endpoints. - 8 Oct 2026 [**Crossmint launches Agent Commerce Toolkit with VIC and Agent Pay credentials**](https://agentreadycheckout.com/news/2026-10-08-crossmint-launches-agent-commerce-toolkit-with-vic-and) Crossmint launched a live, self-serve toolkit combining a PCI vault, Visa Intelligent Commerce and Mastercard Agent Pay tokenized credentials for eligible cards, and checkout at online stores via Shop Pay, UCP or browser automation. - 2 Oct 2026 [**BigCommerce opens Google UCP checkout as early access**](https://agentreadycheckout.com/news/2026-10-02-bigcommerce-opens-google-ucp-checkout-as-early-access) A BigCommerce guide says the Google UCP checkout path is in early access through Commerce AI Labs for select US merchants, with timing given as early Q4 2026 subject to Google approval. - 1 Oct 2026 [**Salesforce lists UCP checkout on Google surfaces as GA in October 2026**](https://agentreadycheckout.com/news/2026-10-01-salesforce-lists-ucp-checkout-on-google-surfaces-as-ga) Salesforce's commerce innovations page marks 'Universal Commerce Protocol (UCP) Integration' GA Oct '26, enabling UCP-powered checkout in the Gemini app and Google Search including AI Mode while the retailer remains merchant of record. ## September 2026 - 30 Sep 2026 [**Mastercard adds trust and intelligence services to Agent Pay, working with Skyfire and Cloudflare**](https://agentreadycheckout.com/news/2026-09-30-mastercard-adds-trust-and-intelligence-services-to) Mastercard expanded Agent Pay with services that give issuers and merchants context on AI-initiated transactions. The first, a probability score that a transaction was AI-initiated, is rolling out for testing in the US. - 30 Sep 2026 [**PayOS opens every product, including agentic payments, through a self-serve portal**](https://agentreadycheckout.com/news/2026-09-30-payos-opens-every-product-including-agentic-payments) PayOS said all its products, covering card, bank, business and identity data plus agentic payments, are available through its self-serve portal, following a 27 Sep 2026 portal launch. - 23 Sep 2026 [**x402 specification adds an exact scheme for Bitcoin Lightning**](https://agentreadycheckout.com/news/2026-09-23-x402-specification-adds-an-exact-scheme-for-bitcoin) The x402 Foundation merged an exact payment scheme for Lightning (lnbtc) into the x402 specification on 23 Sep 2026 (PR #2861), alongside exact schemes for EVM, Solana, XRPL, Stellar and other networks. - 22 Sep 2026 [**PayPal announces checkout partnership with Meta's Muse**](https://agentreadycheckout.com/news/2026-09-22-paypal-announces-checkout-partnership-with-metas-muse)Trade press PayPal said it is partnering with Meta so customers can check out with PayPal inside Muse across PayPal merchants. - 21 Sep 2026 [**Shopify to open Shop Pay checkout on all stores to Meta's Muse**](https://agentreadycheckout.com/news/2026-09-21-shopify-to-open-shop-pay-checkout-on-all-stores-to)Trade press Shopify said Muse will query the Shopify Catalog by default and complete orders through UCP, with Shop Pay as a wallet, per an AI Weekly report citing the WSJ and Tobi Lutke's post. - 20 Sep 2026 [**Amazon blocks Meta's Muse agent from shopping on Amazon.com**](https://agentreadycheckout.com/news/2026-09-20-amazon-blocks-metas-muse-agent-from-shopping-on-amazon)Trade press Amazon began blocking Muse late Sunday 20 Sep 2026, twelve days after launch. - 16 Sep 2026 [**Google holiday update: UCP checkout hub adds cart transfer and testing**](https://agentreadycheckout.com/news/2026-09-16-google-holiday-update-ucp-checkout-hub-adds-cart) Google said UCP already enables direct checkout for hundreds of thousands of brands across Google. - 10 Sep 2026 [**Ninth Circuit declines to rehear Amazon v. Perplexity**](https://agentreadycheckout.com/news/2026-09-10-ninth-circuit-declines-to-rehear-amazon-v-perplexity)Trade press The Ninth Circuit left in place its 4 Aug 2026 panel ruling that vacated the preliminary injunction barring Perplexity's Comet agent from Amazon.com. No judge requested an en banc vote. - 8 Sep 2026 [**Meta launches Muse personal agent with Stripe Link checkout**](https://agentreadycheckout.com/news/2026-09-08-meta-launches-muse-personal-agent-with-stripe-link) Meta launched Muse in the US on iOS, Android and muse.ai. - 2 Sep 2026 [**PayOS and Browserbase partner so browser agents can pay on any website**](https://agentreadycheckout.com/news/2026-09-02-payos-and-browserbase-partner-so-browser-agents-can-pay) PayOS and Browserbase announced a partnership pairing PayOS agent payment credentials with Browserbase's hosted browsers, so agents can reach websites and complete payment with scoped tokens instead of raw card numbers. - 2 Sep 2026 [**UCP forms a Payments Technical Council with Shopify among members**](https://agentreadycheckout.com/news/2026-09-02-ucp-forms-a-payments-technical-council-with-shopify) UCP announced a Payments Technical Council with Adyen, Ant International, Coinbase, Global Payments, Google, PayPal, Shopify and Stripe as inaugural members. ## August 2026 - 31 Aug 2026 [**Shopify Storefront MCP cart tools reach end of maintenance**](https://agentreadycheckout.com/news/2026-08-31-shopify-storefront-mcp-cart-tools-reach-end-of) Shopify said the deprecated get\_cart and update\_cart tools on the Storefront MCP server would be maintained until 31 August 2026; the replacement is UCP Cart MCP at /api/ucp/mcp implementing the UCP cart capability. - 25 Aug 2026 [**UCP release 2026-08-25 adds 3DS2 and multi-vertical refactor**](https://agentreadycheckout.com/news/2026-08-25-ucp-release-2026-08-25-adds-3ds2-and-multi-vertical) UCP published protocol version 2026-08-25 with a multi-vertical refactor, 3DS2 payments security and grocery readiness. Shopify's agent docs show sample agent profiles declaring this version. - 20 Aug 2026 [**commercetools adds storefront, delivery estimate and carrier fields for agentic checkout**](https://agentreadycheckout.com/news/2026-08-20-commercetools-adds-storefront-delivery-estimate-and) commercetools made storefront URLs, estimated delivery and carrier names standard Cart and Order fields, noting these were commonly modelled as Custom Fields for agentic or headless checkout. - 14 Aug 2026 [**Amazon Conditions of Use carry Agent Terms requiring agents to self-identify**](https://agentreadycheckout.com/news/2026-08-14-amazon-conditions-of-use-carry-agent-terms-requiring) Amazon's Conditions of Use, last updated 14 Aug 2026, include Agent Terms: any software acting for a person must identify itself in every HTTP request with the user agent 'Agent/\[agent name\]'. ## Sources 1. [blog.google/a-new-way-to-shop-introducing-a](https://blog.google/intl/en-ca/products/explore-get-answers/a-new-way-to-shop-introducing-a-more-intuitive-agentic-shopping-experience-for-consumers-and-retailers-in-canada/), read 5 Nov 2026 2. [thepaypers.com/mastercard-partners-with-openai](https://thepaypers.com/payments/news/mastercard-partners-with-openai-on-agent-pay-and-ai-transformation), read 5 Nov 2026 3. [Visa Core Rules and Visa Product and Service Rules, 24 October 2026](https://usa.visa.com/dam/VCOM/download/about-visa/visa-rules-public.pdf), read 4 Nov 2026 4. [corporate.walmart.com/news/2026/10/Making-It-Possible-for-Agents-to-Shop-on-Behalf-of-Customers](https://corporate.walmart.com/news/2026/10/Making-It-Possible-for-Agents-to-Shop-on-Behalf-of-Customers), read 4 Nov 2026 5. [mastercard.com/us/en/news-and-trends/press/2026/october/Mastercard-Agent-Pay-for-Machines-in-action.html](https://www.mastercard.com/us/en/news-and-trends/press/2026/october/Mastercard-Agent-Pay-for-Machines-in-action.html), read 4 Nov 2026 6. [shopify.dev/changelog/posts/checkout-mcp-and-cart-mcp-now-support-ucp-buyer-consent](https://shopify.dev/changelog/posts/checkout-mcp-and-cart-mcp-now-support-ucp-buyer-consent), read 4 Nov 2026 7. [Google's new Universal Cart launches today in the U.S.](https://blog.google/products-and-platforms/products/shopping/universal-cart-launch/), read 4 Nov 2026 8. [shopify.dev/changelog/posts/add-shopping-and-shop-pay-checkout-to-any-agent-with-shop-mcp](https://shopify.dev/changelog/posts/add-shopping-and-shop-pay-checkout-to-any-agent-with-shop-mcp), read 4 Nov 2026 9. [shopify.dev/changelog/posts/global-catalog-rest-api-stops-serving-traffic-on-november-2-2026](https://shopify.dev/changelog/posts/global-catalog-rest-api-stops-serving-traffic-on-november-2-2026), read 4 Nov 2026 10. [crossmint.com/announcement/agent-commerce-toolkit-launch](https://crossmint.com/announcement/agent-commerce-toolkit-launch), read 4 Nov 2026 11. [bigcommerce.com/articles/ecommerce/google-agentic-checkout/](https://www.bigcommerce.com/articles/ecommerce/google-agentic-checkout/), read 4 Nov 2026 12. [salesforce.com/commerce/innovations/](https://www.salesforce.com/commerce/innovations/), read 4 Nov 2026 13. [Mastercard trust and intelligence services](https://www.mastercard.com/us/en/news-and-trends/press/2026/september/new-trust-and-intelligence-services.html), read 4 Nov 2026 14. [payos.ai/blog](https://payos.ai/blog), read 4 Nov 2026 15. [x402 exact scheme on Lightning (lnbtc)](https://github.com/x402-foundation/x402/blob/main/specs/schemes/exact/scheme_exact_lnbtc.md), read 4 Nov 2026 16. [PayPal partners with Meta to bring checkout to Muse](https://thepaypers.com/payments/news/paypal-partners-with-meta-to-bring-checkout-to-muse-ai-agent), read 4 Nov 2026 17. [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 18. [Amazon blocks Meta's Muse agent from shopping on users' behalf](https://siliconangle.com/2026/09/21/amazon-blocks-metas-muse-agent-from-shopping-on-users-behalf/), read 4 Nov 2026 19. [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 20. [Appeals Court Again Rejects Amazon Bid To Block Perplexity](https://www.mediapost.com/publications/article/417793/appeals-court-again-rejects-amazon-bid-to-block-pe.html), read 4 Nov 2026 21. [Stripe helps Muse shop across the internet with Link](https://stripe.com/newsroom/news/stripe-helps-meta-muse-shop-with-link), read 4 Nov 2026 22. [payos.ai/blog/payos-browserbase-agents-ready-to-pay](https://payos.ai/blog/payos-browserbase-agents-ready-to-pay), read 4 Nov 2026 23. [ucp.dev/documentation/announcements/](https://ucp.dev/documentation/announcements/), read 4 Nov 2026 24. [shopify.dev/changelog/storefront-mcp-cart-tools-are-being-deprecated-in-favour-of-ucp-cart-mcp](https://shopify.dev/changelog/storefront-mcp-cart-tools-are-being-deprecated-in-favour-of-ucp-cart-mcp), read 4 Nov 2026 25. [docs.commercetools.com/api/releases](https://docs.commercetools.com/api/releases), read 4 Nov 2026 26. [Amazon Conditions of Use](https://www.amazon.com/gp/help/customer/display.html?nodeId=508088), 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)