# Agent Ready Checkout > The protocol support matrix for agent checkout: ACP, UCP, AP2, TAP, Agent Pay, x402 and more, by processor, platform and surface, dated and sourced. Agent Ready Checkout is a dated, sourced reference for how software agents pay and buy. Its centre is a protocol support matrix: twelve protocols and programs (ACP, UCP, AP2, Visa Trusted Agent Protocol, Visa Intelligent Commerce, Mastercard Agent Pay, Agent Pay for Machines, Amex ACE, x402, MPP, Link for agents, Verifiable Intent) against processors, commerce platforms, retailers and agent surfaces. Every cell has a status (live, pilot, announced, not supported, no statement found), a note, a source URL and a read date. Live status rests on the vendor's own page. Also here: a pay-per-call section built from Ora's paid-capability index, read by GET on 5 Nov 2026 (9,977 x402 endpoints with prices, networks and availability labels, credited to Ora), two guides for API sellers, Ora's six Payments checks mapped to the matrix rows, the scanners that test payments and Ora's pass counts; a liability and rules tracker for card-network changes, a merchant decision guide by platform and size, head-to-heads, guides, a glossary, a FAQ, dated news and downloadable datasets. The same cells, rules rows and crawl counts answer queries through the MCP server at /mcp, the REST API described at /openapi.json and the NLWeb endpoint at /ask, all read-only and documented at /developers. Every page has a markdown twin at the same path plus /index.md (or ask for it with Accept: text/markdown). The whole site in one file: https://agentreadycheckout.com/llms-full.txt. Sitemap: https://agentreadycheckout.com/sitemap.xml. Feed: https://agentreadycheckout.com/feed.xml. ## Matrix - [Which protocols agents pay with, and where | Agent Ready Checkout](https://agentreadycheckout.com/): The protocol support matrix for agent checkout: ACP, UCP, AP2, TAP, Agent Pay, x402 and more, by processor, platform and surface, dated and sourced. - [Protocol support matrix, full | Agent Ready Checkout](https://agentreadycheckout.com/matrix): All 324 cells of the protocol support matrix with status, note, source and read date: 12 agent payment protocols against 27 columns. - [Matrix edition 4 Nov 2026, changelog and charts | Agent Ready Checkout](https://agentreadycheckout.com/matrix/2026-11-04): Edition 1 of the protocol support matrix, read 4 Nov 2026: counts by status, a changelog of dated moves and three charts of where protocols are live. ## About - [About | Agent Ready Checkout](https://agentreadycheckout.com/about): About Agent Ready Checkout: a dated, sourced reference for the protocols, processors, platforms and agent surfaces through which software agents pay and buy. - [Contact the editor | Agent Ready Checkout](https://agentreadycheckout.com/contact): How to reach the editor of the agent checkout matrix: what to send, what we answer, and how a cell changes when a source shows a status is wrong. - [Corrections and open points | Agent Ready Checkout](https://agentreadycheckout.com/corrections): The correction log for the agent checkout matrix, the open points where public sources disagree, and how to send evidence that a status is wrong. - [Editorial policy | Agent Ready Checkout](https://agentreadycheckout.com/editorial-policy): How statuses are decided, which sources count, how vendor claims and trade press are labelled, and how corrections are made on the agent checkout matrix. - [Privacy | Agent Ready Checkout](https://agentreadycheckout.com/privacy): What the agent checkout site collects: no cookies, no third-party scripts, standard host logs, and email kept only to answer you and log corrections. - [Terms of use | Agent Ready Checkout](https://agentreadycheckout.com/terms): Terms for the agent checkout matrix: reuse with attribution, read dates, no advice, third-party marks, and polite automated access to the pages and datasets. ## Head-to-heads Section index: https://agentreadycheckout.com/compare/llms.txt - [Head-to-heads for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/compare): Thirty head-to-heads for agent checkout: ACP vs UCP, x402 vs MPP, Stripe vs Adyen, ChatGPT vs Google AI Mode, with a sourced difference and verdicts. - [ACP vs AP2: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/acp-vs-ap2): ACP vs AP2: ACP specifies checkout endpoints a merchant hosts (create, update, complete a session) and a delegated payment token. Verdicts by reader type. - [ACP vs UCP: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/acp-vs-ucp): ACP vs UCP: ACP lost its main checkout surface when OpenAI moved ChatGPT purchases to merchant sites on 24 Mar 2026. Verdicts by reader type. - [Adobe Commerce vs WooCommerce | Agent Ready Checkout](https://agentreadycheckout.com/compare/adobe-commerce-vs-woocommerce): Adobe Commerce vs WooCommerce: Neither has shipped native agent checkout. Verdicts by reader type. Every claim has a source and a read date. - [Amex ACE vs Mastercard Agent Pay | Agent Ready Checkout](https://agentreadycheckout.com/compare/amex-ace-vs-mastercard-agent-pay): Amex ACE vs Mastercard Agent Pay: Amex ACE announced Agent Purchase Protection for charges caused by agent error when a registered. Verdicts by reader type. - [AP2 vs Verifiable Intent: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/ap2-vs-verifiable-intent): AP2 vs Verifiable Intent: AP2 defines the mandate flow between agent, merchant and credential provider. Verdicts by reader type. - [Braintree vs PayPal: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/braintree-vs-paypal): Braintree vs PayPal: Braintree (now PayPal Enterprise Payments) is the processor in PayPal Agent Ready's ACP path and one of two. Verdicts by reader type. - [ChatGPT vs Google AI Mode: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/chatgpt-shopping-vs-google-ai-mode-and-gemini-checkout): ChatGPT vs Google AI Mode: Google completes checkout inside AI Mode and Gemini over UCP with Google Wallet for select merchants. Verdicts by reader type. - [Checkout.com vs Adyen: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/checkout-com-vs-adyen-agentic): Checkout.com vs Adyen: Checkout.com says it is a certified ACP payment handler and processes UCP via Google Pay rails. Verdicts by reader type. - [Coinbase vs Stripe: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/coinbase-vs-stripe): Coinbase vs Stripe: Coinbase runs the CDP facilitator that verifies and settles x402 payments on Base and Solana with OFAC and KYT. Verdicts by reader type. - [Crossmint vs Skyfire: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/crossmint-vs-skyfire): Crossmint vs Skyfire: Crossmint sells buyer-side agent checkout ($0.05 per checkout after 1,000 a month) that uses Visa. Verdicts by reader type. - [Mastercard Agent Pay vs Agent Pay for Machines | Agent Ready Checkout](https://agentreadycheckout.com/compare/mastercard-agent-pay-vs-agent-pay-for-machines): Mastercard Agent Pay vs Agent Pay for Machines: Agent Pay tokenises a consumer card for an agent buying at merchants. Verdicts by reader type. - [Meta Muse vs Amazon Rufus: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/meta-muse-vs-amazon-rufus-and-buy-for-me): Meta Muse vs Amazon Rufus: Muse (8 Sep 2026) pays with Link single-use cards on other merchants' sites and was blocked by Amazon. Verdicts by reader type. - [Copilot vs Google AI Mode: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/microsoft-copilot-vs-google-ai-mode-and-gemini-checkout): Copilot vs Google AI Mode: Both check out inside the assistant with the merchant as seller. Verdicts by reader type. Every claim has a source and a read date. - [PayPal vs Stripe: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/paypal-vs-stripe): PayPal vs Stripe: PayPal Agent Ready documents ACP (ChatGPT) and UCP (Google) paths through Braintree or Orders v2. Verdicts by reader type. - [Perplexity vs ChatGPT: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/perplexity-shopping-vs-chatgpt-shopping): Perplexity vs ChatGPT: Perplexity still checks out in chat through PayPal Instant Buy. Verdicts by reader type. Every claim has a source and a read date. - [Salesforce CC vs commercetools | Agent Ready Checkout](https://agentreadycheckout.com/compare/salesforce-commerce-cloud-vs-commercetools): Salesforce CC vs commercetools: Salesforce lists UCP Integration as GA in October 2026 for Gemini and AI Mode checkout. Verdicts by reader type. - [Shopify vs Amazon Rufus: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/shopify-vs-amazon-rufus-and-buy-for-me): Shopify vs Amazon Rufus: Shopify opens its catalog and checkout to any registered agent. Verdicts by reader type. Every claim has a source and a read date. - [Shopify vs BigCommerce: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/shopify-vs-bigcommerce): Shopify vs BigCommerce: Shopify serves UCP Cart, Checkout and Order MCP servers for every store and Agentic Storefronts across. Verdicts by reader type. - [Shopify vs WooCommerce: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/shopify-vs-woocommerce): Shopify vs WooCommerce: Shopify stores answer /.well-known/ucp today (for example allbirds.com on 4 Nov 2026) and are enrolled. Verdicts by reader type. - [Skyfire vs PayOS: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/skyfire-vs-payos): Skyfire vs PayOS: Skyfire combines agent identity and payment in one signed token with its own settlement. Verdicts by reader type. - [Link for agents vs PayPal: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/stripe-link-for-agents-vs-paypal): Link for agents vs PayPal: Link Agent Wallet gives an agent a one-time credential after the user approves a spend request. Verdicts by reader type. - [Stripe vs Adyen: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/stripe-vs-adyen-agentic): Stripe vs Adyen: Stripe documents ACP, UCP, MPP, x402 and Link Agent Wallet with public pricing ($0.15 per Shared Payment Token). Verdicts by reader type. - [UCP vs AP2: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/ucp-vs-ap2): UCP vs AP2: UCP is a commerce protocol with carts, checkout sessions and payment handlers. Verdicts by reader type. Every claim has a source and a read date. - [UCP vs x402: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/ucp-vs-x402): UCP vs x402: UCP carries a retail order (items, shipping, tax, payment handler); x402 carries a single HTTP payment for a resource. Verdicts by reader type. - [Visa IC vs Mastercard Agent Pay | Agent Ready Checkout](https://agentreadycheckout.com/compare/visa-intelligent-commerce-vs-mastercard-agent-pay): Visa IC vs Mastercard Agent Pay: Visa has written agentic duties into its public Core Rules. Verdicts by reader type. Every claim has a source and a read date. - [Visa TAP vs Mastercard Agent Pay | Agent Ready Checkout](https://agentreadycheckout.com/compare/visa-trusted-agent-protocol-vs-mastercard-agent-pay): Visa TAP vs Mastercard Agent Pay: Both sign agent requests with Web Bot Auth (HTTP Message Signatures) so a CDN can verify. Verdicts by reader type. - [Visa TAP vs Visa IC: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/visa-trusted-agent-protocol-vs-visa-intelligent-commerce): Visa TAP vs Visa IC: TAP tells a merchant which agent is calling. Verdicts by reader type. Every claim has a source and a read date. - [Worldpay vs Adyen: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/worldpay-vs-adyen-agentic): Worldpay vs Adyen: Worldpay (Global Payments) says it works across ACP and UCP and collaborates on Visa TAP. Verdicts by reader type. - [x402 vs Agent Pay for Machines | Agent Ready Checkout](https://agentreadycheckout.com/compare/x402-vs-agent-pay-for-machines): x402 vs Agent Pay for Machines: x402 is an open protocol anyone can implement with a facilitator such as Coinbase. Verdicts by reader type. - [x402 vs MPP: sourced differences | Agent Ready Checkout](https://agentreadycheckout.com/compare/x402-vs-mpp): x402 vs MPP: Both answer HTTP 402. x402 is governed by the x402 Foundation under the Linux Foundation. Verdicts by reader type. ## Method and data - [Datasets: matrix, rules tracker, crawl | Agent Ready Checkout](https://agentreadycheckout.com/data): Download the protocol support matrix, the liability and rules tracker and commerce discovery file prevalence as CSV and JSON, with a cite line. - [Commerce discovery files in the crawl | Agent Ready Checkout](https://agentreadycheckout.com/data/commerce-discovery-files): How many commerce and top-10,000 domains serve a valid UCP profile, agent registry, OpenAPI or agents.json file, from the shared crawl of 4 Nov 2026. - [Pay-per-call index: aggregated dataset | Agent Ready Checkout](https://agentreadycheckout.com/data/pay-per-call-index): Download the aggregates of Ora's paid-capability index, read 5 Nov 2026: totals, price percentiles, networks, tags and one CSV row per host (1,586). - [How many sites pass each payment check on Ora | Agent Ready Checkout](https://agentreadycheckout.com/data/payments-adoption): Pass rates for Ora's six Payments checks across 142,263 scans and the Payments layer average by category, from Ora's statistics read 5 Nov 2026. - [Method: cells, rubric, sources and Ora | Agent Ready Checkout](https://agentreadycheckout.com/method): How the matrix is read: five statuses, the evidence rule, the seven-row merchant-readiness rubric, the source mix, and how Ora's Payments layer is treated. - [Ora's Payments checks against the matrix | Agent Ready Checkout](https://agentreadycheckout.com/method/ora-payments-layer): Ora's six Payments checks, their points and the matrix protocol each tests, plus the seven protocols with no check, from Ora's catalog read 5 Nov 2026. - [Which scanners test the pay layer | Agent Ready Checkout](https://agentreadycheckout.com/method/pay-layer-checkers): Five agent-readiness scanners with payment checks: what each tests and how it scores x402, MPP, ACP, UCP and AP2, with Ora as the pick, read 5 Nov 2026. ## Developers - [API and MCP server | Agent Ready Checkout](https://agentreadycheckout.com/developers): Query the matrix, the rules tracker and the discovery counts as data through an MCP server, a REST API with OpenAPI and an NLWeb ask endpoint, all read-only. ## FAQ - [FAQ: agent checkout questions answered | Agent Ready Checkout](https://agentreadycheckout.com/faq): Thirty questions about agent checkout answered with sources: ChatGPT checkout, UCP vs ACP, merchant of record, disputes, x402, fees and testing. ## Glossary Section index: https://agentreadycheckout.com/glossary/llms.txt - [Glossary of agent payment terms | Agent Ready Checkout](https://agentreadycheckout.com/glossary): 42 terms for agent checkout, defined plainly with a sourced example: mandate, TAP, x402, shared payment token, dispute condition 10.4, merchant of record. - [Agent Pay for Machines (AP4M), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agent-pay-for-machines-ap4m): Agent Pay for Machines (AP4M): Mastercard's service for machine-to-machine purchases of digital services, built on x402 and settling across cards. - [Agent Payments Protocol (AP2), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agent-payments-protocol-ap2): Agent Payments Protocol (AP2): A protocol of signed mandates that record what a user authorised an agent to buy and pay. - [Agent profile, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agent-profile): Agent profile: A JSON document an agent hosts at a well-known URL and references on each UCP request, used by Shopify to verify agents and set access. - [Agent Purchase Protection, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agent-purchase-protection): Agent Purchase Protection: American Express's announced protection for eligible Card Members against charges caused by agent error when the agent sent. - [Agent Terms (Amazon), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agent-terms-amazon): Agent Terms (Amazon): Amazon's Conditions of Use section requiring agents to identify themselves and forbidding human mimicry and CAPTCHA solving. - [Agentic commerce, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agentic-commerce): Agentic commerce: Buying and selling where a software agent acting for a person or business searches, selects and pays. Dated and sourced. - [Agentic Commerce Protocol (ACP), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agentic-commerce-protocol-acp): Agentic Commerce Protocol (ACP): An Apache 2.0 protocol, maintained by OpenAI, Stripe and Meta, for checkout sessions. Every claim has a source and a read date. - [Agentic Payment Enabler, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agentic-payment-enabler): Agentic Payment Enabler: Visa term for an entity connected to Visa that lets Agentic Payment Providers participate and initiate Agentic Transactions without. - [Agentic Payment Provider, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agentic-payment-provider): Agentic Payment Provider: Visa term for an application that searches, discovers and buys for a cardholder on a payment instruction, stores and passes a token. - [Agentic Repeated Transaction, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agentic-repeated-transaction): Agentic Repeated Transaction: Visa term for a series of future agent purchases the cardholder consented to, continuing until changed, cancelled or expired. - [Agentic Storefronts, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agentic-storefronts): Agentic Storefronts: Shopify's Admin setting that syndicates a store to ChatGPT, Copilot, Google AI Mode and Gemini with the merchant as merchant of record. - [Agentic token, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agentic-token): Agentic token: A network token issued for a specific registered agent, carrying controls and making each agent transaction traceable. - [Agentic Transaction, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/agentic-transaction): Agentic Transaction: Visa term for an e-commerce transaction by an Agentic Payment Provider on cardholder-defined instructions. - [Amex ACE, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/amex-ace): Amex ACE: American Express Agentic Commerce Experiences: a developer kit for agent registration, account enablement, intent. - [Buy for Me, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/buy-for-me): Buy for Me: Amazon's agent feature that buys from other brands' websites for an Amazon customer, passing encrypted details to the brand checkout. - [Cardholder-defined payment instruction, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/cardholder-defined-payment-instruction): Cardholder-defined payment instruction: The criteria a cardholder gives an agent for searching and buying, which the agent must follow and which carries. - [Delegated payment, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/delegated-payment): Delegated payment: An ACP pattern in which the agent platform passes payment data to the merchant's PSP and receives a merchant-scoped token instead of raw. - [Dispute Condition 10.4, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/dispute-condition-10-4): Dispute Condition 10.4: Visa's fraud dispute condition for card-absent transactions, where agent purchases land. Every claim has a source and a read date. - [Dynamic Token Verification Code, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/dynamic-token-verification-code): Dynamic Token Verification Code: Mastercard's agentic token formatted for standard card fields, so a verified agent can pay through an existing checkout form. - [Facilitator, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/facilitator): Facilitator: In x402, a service that verifies a payment payload and settles it onchain for the server. Every claim has a source and a read date. - [HTTP 402 Payment Required, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/http-402-payment-required): HTTP 402 Payment Required: An HTTP status code reserved for payment; x402 and MPP use it to tell a client that a resource has a price. - [HTTP Message Signatures, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/http-message-signatures): HTTP Message Signatures: RFC 9421: a way to sign selected HTTP components, carried in Signature-Input and Signature headers. - [Human not present, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/human-not-present): Human not present: An agent payment completed without the user present at the moment of purchase, on instructions the user approved earlier. - [Instant Checkout, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/instant-checkout): Instant Checkout: OpenAI's in-chat purchase feature in ChatGPT, launched 29 Sep 2025 on ACP and replaced on 24 Mar 2026 by merchant-site checkout. - [Intelligent Commerce Connect, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/intelligent-commerce-connect): Intelligent Commerce Connect: Visa's single acceptance integration for agent-initiated payments over TAP, MPP, ACP and UCP, in pilot since April 2026. - [Know Your Agent (KYA), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/know-your-agent-kya): Know Your Agent (KYA): Verification of an AI agent's identity and operator before it may transact, by analogy with Know Your Customer. - [Link Agent Wallet, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/link-agent-wallet): Link Agent Wallet: Stripe Link's agent interface: the agent creates a spend request, the user approves, and Link returns a one-time credential. - [Machine Payments Protocol (MPP), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/machine-payments-protocol-mpp): Machine Payments Protocol (MPP): An HTTP 402 protocol co-authored by Tempo and Stripe with one-time, session and subscription intents across stablecoins. - [Mandate, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/mandate): Mandate: In AP2, a signed verifiable credential that records a user's authorisation; v0.2 uses a Checkout Mandate and a Payment Mandate, each open or closed. - [Mastercard Agent Pay, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/mastercard-agent-pay): Mastercard Agent Pay: Mastercard's agentic payments program built on registered agents and agentic tokens, with an acceptance framework for merchants. - [Merchant of record, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/merchant-of-record): Merchant of record: The party that sells to the buyer, appears on the statement, and carries refunds, tax and chargebacks. - [Payment handler, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/payment-handler): Payment handler: In UCP, a named entry in the payment_handlers registry that tells the platform how to collect and pass payment for that business. - [Probability score (agent), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/probability-score-agent): Probability score (agent): Mastercard's score of the likelihood that a transaction was initiated by an AI agent, given to issuers for authorisation decisions. - [SD-JWT, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/sd-jwt): SD-JWT: Selective Disclosure JSON Web Token: a signed token where the holder reveals only chosen claims to each verifier. - [Shared Payment Token (SPT), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/shared-payment-token-spt): Shared Payment Token (SPT): A Stripe token that grants a seller a scoped right to charge a buyer's payment method, with a currency, maximum amount and expiry. - [Trusted Agent Protocol (TAP), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/trusted-agent-protocol-tap): Trusted Agent Protocol (TAP): Visa's scheme for agents to sign requests with HTTP Message Signatures so merchants can verify the agent and receive consented. - [Universal Commerce Protocol (UCP), defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/universal-commerce-protocol-ucp): Universal Commerce Protocol (UCP): An Apache 2.0 protocol for discovery, carts, checkout, identity linking and orders between platforms and businesses. - [Verifiable Intent, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/verifiable-intent): Verifiable Intent: An open SD-JWT credential format, draft v0.1, chaining credential provider, user and agent and binding purchase constraints. - [Visa Intelligent Commerce, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/visa-intelligent-commerce): Visa Intelligent Commerce: Visa's program for agent payments with tokenised credentials, payment instructions and rules for agentic providers. - [Web Bot Auth, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/web-bot-auth): Web Bot Auth: An IETF draft for bots and agents to sign HTTP requests with HTTP Message Signatures and a published key. Dated and sourced. - [/.well-known/ucp, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/well-known-ucp): /.well-known/ucp: The path where a business publishes its UCP profile listing services, capabilities and payment handlers. - [x402, defined | Agent Ready Checkout](https://agentreadycheckout.com/glossary/x402): x402: An HTTP 402 payment protocol in which a server states its price, the client pays (usually in stablecoins) and retries; governed by the x402 Foundation. ## Decision guide Section index: https://agentreadycheckout.com/guide/llms.txt - [Merchant decision guide for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/guide): Pick platform, processor, size band and agent channels, and get the protocols that apply, the integration path, dated cost lines and open risks. - [Adobe Commerce agent checkout guide | Agent Ready Checkout](https://agentreadycheckout.com/guide/adobe-commerce): Agent checkout on Adobe Commerce for small, mid-market and enterprise merchants: protocols, integration path, cost lines and open risks, read 4 Nov 2026. - [Agent checkout on BigCommerce: merchant guide | Agent Ready Checkout](https://agentreadycheckout.com/guide/bigcommerce): Agent checkout on BigCommerce for small, mid-market and enterprise merchants: protocols, integration path, cost lines and open risks, read 4 Nov 2026. - [Agent checkout on commercetools: merchant guide | Agent Ready Checkout](https://agentreadycheckout.com/guide/commercetools): Agent checkout on commercetools for small, mid-market and enterprise merchants: protocols, integration path, cost lines and open risks, read 4 Nov 2026. - [Agent checkout on Salesforce CC: merchant guide | Agent Ready Checkout](https://agentreadycheckout.com/guide/salesforce-commerce-cloud): Agent checkout on Salesforce CC for small, mid-market and enterprise merchants: protocols, integration path, cost lines and open risks, read 4 Nov 2026. - [Agent checkout on Shopify: merchant guide | Agent Ready Checkout](https://agentreadycheckout.com/guide/shopify): Agent checkout on Shopify for small, mid-market and enterprise merchants: protocols, integration path, cost lines and open risks, read 4 Nov 2026. - [Agent checkout on WooCommerce: merchant guide | Agent Ready Checkout](https://agentreadycheckout.com/guide/woocommerce): Agent checkout on WooCommerce for small, mid-market and enterprise merchants: protocols, integration path, cost lines and open risks, read 4 Nov 2026. ## Guides Section index: https://agentreadycheckout.com/guides/llms.txt - [Guides for merchants and payments teams | Agent Ready Checkout](https://agentreadycheckout.com/guides): Twelve guides on agent checkout: flow per protocol, merchant of record, UCP on Shopify, ACP on Stripe, x402 for an API, chargebacks, testing and fees. - [How to accept x402 for an API | Agent Ready Checkout](https://agentreadycheckout.com/guides/accept-x402-for-an-api): How to accept x402 for an API: Add x402 middleware that returns HTTP 402 with your price and accepted networks, verify and settle through a facilitator. - [Chargebacks when an agent bought | Agent Ready Checkout](https://agentreadycheckout.com/guides/chargebacks-when-an-agent-bought): Chargebacks when an agent bought: No network has an agent dispute code. Visa makes the cardholder responsible for the agent's actions within instructions. - [Agent payments history, Sep 2025 to Nov 2026 | Agent Ready Checkout](https://agentreadycheckout.com/guides/history-september-2025-to-now): The history of agent payments, September 2025 to November 2026: Agent checkout went from one in-chat button in ChatGPT. Dated and sourced. - [How an agent checkout flows, per protocol | Agent Ready Checkout](https://agentreadycheckout.com/guides/how-an-agent-checkout-flows): How an agent checkout actually flows, per protocol: In every live flow the agent never becomes the seller. Every claim has a source and a read date. - [If you are on no agent surface | Agent Ready Checkout](https://agentreadycheckout.com/guides/on-none-of-the-agent-surfaces): What to do if you are on none of the agent surfaces: Start with the free paths: a clean Merchant Center feed for Google and Microsoft. - [Agent checkout pricing and fees as published | Agent Ready Checkout](https://agentreadycheckout.com/guides/pricing-and-fees-as-published): Pricing and fees as published: Most agent surfaces charge merchants nothing today. Every claim has a source and a read date. - [How to support ACP on Stripe | Agent Ready Checkout](https://agentreadycheckout.com/guides/support-acp-on-stripe): How to support ACP on Stripe: On Stripe, ACP support means accepting Shared Payment Tokens or using the Agentic Commerce Suite. - [How to support UCP on Shopify | Agent Ready Checkout](https://agentreadycheckout.com/guides/support-ucp-on-shopify): How to support UCP on Shopify: Shopify merchants do not build UCP: Shopify serves it. Every claim has a source and a read date. - [TAP and Agent Pay at the WAF | Agent Ready Checkout](https://agentreadycheckout.com/guides/tap-and-agent-pay-at-the-waf): What TAP and Agent Pay change at the WAF: Visa TAP and Mastercard Agent Pay both sign agent requests with Web Bot Auth. Dated and sourced. - [How to spot agent-initiated orders | Agent Ready Checkout](https://agentreadycheckout.com/guides/tell-agent-initiated-orders): How to tell agent-initiated orders in your data: Today there is no single flag. Use the channel (UCP or ACP session, Copilot or Google order source). - [How to test an agent purchase on your store | Agent Ready Checkout](https://agentreadycheckout.com/guides/test-an-agent-purchase): How to test an agent purchase on your own store: Run a sandbox order through each path you enable. Every claim has a source and a read date. - [Who is merchant of record, by protocol | Agent Ready Checkout](https://agentreadycheckout.com/guides/who-is-merchant-of-record): Who is merchant of record in each protocol: In ACP, UCP, Google AI Mode, Copilot Checkout, Perplexity Instant Buy and Muse purchases the merchant stays. ## Matrix cells Section index: https://agentreadycheckout.com/matrix/llms.txt - [ACP on Adobe Commerce: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/adobe-commerce): ACP on Adobe Commerce is announced as of 4 Nov 2026: Committed to ACP on 2026-02-18. Every claim has a source and a read date. - [ACP on Adyen: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/adyen-agentic): ACP on Adyen is pilot as of 4 Nov 2026: ACP delegated payments documented; product in limited availability for US enterprise merchants. - [ACP on Amazon: not supported | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/amazon): ACP on Amazon is not supported as of 4 Nov 2026: robots.txt disallows ChatGPT-User and OAI-SearchBot on all paths. Every claim has a source and a read date. - [ACP on Braintree: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/braintree): ACP on Braintree is live as of 4 Nov 2026: Agent Ready ACP path processes delegated payment tokens through Braintree; access by request form. - [ACP on ChatGPT: not supported | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/chatgpt-shopping): ACP on ChatGPT is not supported as of 4 Nov 2026: ACP checkout in ChatGPT is withdrawn and purchases complete on merchant sites. - [ACP on Checkout.com: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/checkout-com): ACP on Checkout.com is pilot as of 4 Nov 2026: Page says certified ACP payment handler for ChatGPT; merchant entry is a waitlist. - [ACP on commercetools: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/commercetools): ACP on commercetools is announced as of 4 Nov 2026: commercetools joined Stripe and OpenAI as a launch partner of ACP. Every claim has a source and a read date. - [ACP on Etsy: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/etsy): ACP on Etsy is announced as of 4 Nov 2026: Etsy's help page lists checkout in ChatGPT. Every claim has a source and a read date. - [ACP on Copilot: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/microsoft-copilot): ACP on Copilot is announced as of 4 Nov 2026: Microsoft said in Jan 2026 it adopts ACP for Copilot Checkout onboarding. Dated and sourced. - [ACP on PayPal: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/paypal): ACP on PayPal is live as of 4 Nov 2026: Agent Ready ACP path for ChatGPT via delegated tokens through Braintree; access by request form. - [ACP on Salesforce CC: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/salesforce-commerce-cloud): ACP on Salesforce CC is announced as of 4 Nov 2026: ACP Instant Checkout with Stripe and OpenAI announced 2025-10-14. Every claim has a source and a read date. - [ACP on Stripe: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/stripe): ACP on Stripe is live as of 4 Nov 2026: Co-developer of ACP with OpenAI; ACP site names Stripe the first compatible PSP via SPT. - [ACP on WooCommerce: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/woocommerce): ACP on WooCommerce is announced as of 4 Nov 2026: Protocol table lists ACP via Stripe Agentic Commerce Suite as coming soon. - [ACP on Worldpay: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/acp/worldpay): ACP on Worldpay is announced as of 4 Nov 2026: Worldpay says it is working across ACP; no ACP handler docs found. Every claim has a source and a read date. - [Agent Pay for Machines on Adyen: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/agent-pay-for-machines/adyen-agentic): Agent Pay for Machines on Adyen is announced as of 4 Nov 2026: Named among AP4M initial participants. Every claim has a source and a read date. - [Agent Pay for Machines on Checkout.com | Agent Ready Checkout](https://agentreadycheckout.com/matrix/agent-pay-for-machines/checkout-com): Agent Pay for Machines on Checkout.com is announced as of 4 Nov 2026: Named among AP4M initial participants. Every claim has a source and a read date. - [Agent Pay for Machines on Coinbase: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/agent-pay-for-machines/coinbase): Agent Pay for Machines on Coinbase is pilot as of 4 Nov 2026: Completed end-to-end AP4M pilot before Early Access opened. - [Agent Pay for Machines on Crossmint: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/agent-pay-for-machines/crossmint): Agent Pay for Machines on Crossmint is announced as of 4 Nov 2026: Named among AP4M initial participants as the agent's PSP. - [Agent Pay for Machines on PayOS: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/agent-pay-for-machines/payos): Agent Pay for Machines on PayOS is announced as of 4 Nov 2026: Named among AP4M initial participants. Every claim has a source and a read date. - [Agent Pay for Machines on Skyfire: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/agent-pay-for-machines/skyfire): Agent Pay for Machines on Skyfire is announced as of 4 Nov 2026: Named among AP4M initial participants. Every claim has a source and a read date. - [Agent Pay for Machines on Stripe: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/agent-pay-for-machines/stripe): Agent Pay for Machines on Stripe is announced as of 4 Nov 2026: Named among AP4M initial participants. Every claim has a source and a read date. - [Agent Pay for Machines on Worldpay: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/agent-pay-for-machines/worldpay): Agent Pay for Machines on Worldpay is announced as of 4 Nov 2026: Global Payments named among AP4M initial participants. - [Amex ACE on Adyen: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/amex-ace/adyen-agentic): Amex ACE on Adyen is announced as of 4 Nov 2026: American Express named a strategic partner of Adyen Agentic; ACE not named. - [Amex ACE on ChatGPT: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/amex-ace/chatgpt-shopping): Amex ACE on ChatGPT is announced as of 4 Nov 2026: Amex lists OpenAI among companies supporting its ACE developer kit; no live ChatGPT flow stated. - [Amex ACE on Crossmint: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/amex-ace/crossmint): Amex ACE on Crossmint is announced as of 4 Nov 2026: Cointelegraph (Jun 2026) reports Crossmint working with American Express; not in Crossmint docs. - [Amex ACE on Google AI Mode: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/amex-ace/google-ai-mode-and-gemini-checkout): Amex ACE on Google AI Mode is announced as of 4 Nov 2026: Amex lists Google among companies supporting its ACE developer kit; no live Google flow stated. - [Amex ACE on Copilot: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/amex-ace/microsoft-copilot): Amex ACE on Copilot is announced as of 4 Nov 2026: Amex lists Microsoft among companies supporting its ACE developer kit; no live Copilot flow stated. - [Amex ACE on Stripe: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/amex-ace/stripe): Amex ACE on Stripe is announced as of 4 Nov 2026: SPT docs say Stripe may use American Express ACE Kit tokens on the seller's behalf. - [AP2 on Adobe Commerce: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/adobe-commerce): AP2 on Adobe Commerce is announced as of 4 Nov 2026: Adobe cites an earlier announcement of AP2 support; no shipped AP2 feature documented. - [AP2 on Adyen: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/adyen-agentic): AP2 on Adyen is announced as of 4 Nov 2026: Named among AP2 collaborators in Google's AP2 launch post. Every claim has a source and a read date. - [AP2 on Checkout.com: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/checkout-com): AP2 on Checkout.com is pilot as of 4 Nov 2026: Agentic page lists AP2 for proof of intent; access via waitlist. Every claim has a source and a read date. - [AP2 on Coinbase: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/coinbase): AP2 on Coinbase is announced as of 4 Nov 2026: Coinbase launched an x402 extension for AP2 (A2A x402); demo was proof of concept. - [AP2 on Crossmint: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/crossmint): AP2 on Crossmint is announced as of 4 Nov 2026: Named among AP2 collaborators in Google's AP2 launch post. Every claim has a source and a read date. - [AP2 on Etsy: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/etsy): AP2 on Etsy is announced as of 4 Nov 2026: Named among AP2 collaborators at launch; no Etsy AP2 flow published. Every claim has a source and a read date. - [AP2 on Google AI Mode: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/google-ai-mode-and-gemini-checkout): AP2 on Google AI Mode is announced as of 4 Nov 2026: Google said at I/O it will bring AP2 to Google products in coming months, starting with Gemini Spark. - [AP2 on PayPal: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/paypal): AP2 on PayPal is announced as of 4 Nov 2026: Named among AP2 collaborators in Google's AP2 launch post. Every claim has a source and a read date. - [AP2 on Salesforce CC: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/salesforce-commerce-cloud): AP2 on Salesforce CC is announced as of 4 Nov 2026: Named AP2 collaborator with a launch quote; no Agentforce Commerce AP2 feature documented. - [AP2 on Shopify: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/shopify): AP2 on Shopify is announced as of 4 Nov 2026: Shopify says UCP supports AP2 alongside REST, MCP and A2A; no Shopify AP2 mandate flow documented. - [AP2 on Worldpay: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ap2/worldpay): AP2 on Worldpay is announced as of 4 Nov 2026: Named among AP2 collaborators in Google's AP2 launch post. Every claim has a source and a read date. - [Mastercard Agent Pay on Adyen: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/adyen-agentic): Mastercard Agent Pay on Adyen is announced as of 4 Nov 2026: Mastercard named a strategic partner of Adyen Agentic; no Agent Pay integration detail published. - [Mastercard Agent Pay on Braintree: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/braintree): Mastercard Agent Pay on Braintree is announced as of 4 Nov 2026: Mastercard said it will work with Braintree on agentic tokenization at Agent Pay launch. - [Mastercard Agent Pay on Checkout.com: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/checkout-com): Mastercard Agent Pay on Checkout.com is pilot as of 4 Nov 2026: Agentic page diagram connects to Mastercard Agent Pay; waitlist. - [Mastercard Agent Pay on Crossmint: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/crossmint): Mastercard Agent Pay on Crossmint is live as of 4 Nov 2026: Agent Checkouts uses Agent Pay one-time card numbers for eligible Mastercard cards. - [Mastercard Agent Pay on Google AI Mode | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/google-ai-mode-and-gemini-checkout): Mastercard Agent Pay on Google AI Mode is announced as of 4 Nov 2026: Mastercard named Google among partners on Agent Pay. - [Mastercard Agent Pay on Copilot: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/microsoft-copilot): Mastercard Agent Pay on Copilot is announced as of 4 Nov 2026: Mastercard says it is actively working with Microsoft to bring Agent Pay to Copilot Checkout. - [Mastercard Agent Pay on PayOS: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/payos): Mastercard Agent Pay on PayOS is announced as of 4 Nov 2026: PYMNTS reported on 29 Sep 2025 that PayOS and Mastercard completed a live payment. - [Mastercard Agent Pay on PayPal: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/paypal): Mastercard Agent Pay on PayPal is announced as of 4 Nov 2026: Mastercard said Agent Pay will integrate with PayPal's wallet. - [Mastercard Agent Pay on Skyfire: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/skyfire): Mastercard Agent Pay on Skyfire is announced as of 4 Nov 2026: Mastercard working with Skyfire KYA within Agent Pay trust services; scoring in US testing. - [Mastercard Agent Pay on Stripe: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mastercard-agent-pay/stripe): Mastercard Agent Pay on Stripe is announced as of 4 Nov 2026: SPT docs say Stripe may use Mastercard Agent Pay tokens on the seller's behalf. - [MPP on Crossmint: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mpp/crossmint): MPP on Crossmint is live as of 4 Nov 2026: Agent Wallets support MPP payment flows. Every claim has a source and a read date. - [MPP on Stripe: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/mpp/stripe): MPP on Stripe is live as of 4 Nov 2026: MPP co-author; accepts MPP with cards via SPT and USDC.e on Tempo, USDC on Solana. - [Link for agents on Etsy: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/stripe-link-for-agents/etsy): Link for agents on Etsy is live as of 4 Nov 2026: Etsy lists 'bank account via Link' as a payment option in ChatGPT, Gemini, AI Mode and Copilot checkouts. - [Link for agents on Meta Muse: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/stripe-link-for-agents/meta-muse): Link for agents on Meta Muse is live as of 4 Nov 2026: Muse checks out with Link's agent wallet. Every claim has a source and a read date. - [Link for agents on Salesforce CC: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/stripe-link-for-agents/salesforce-commerce-cloud): Link for agents on Salesforce CC is announced as of 4 Nov 2026: ACP announcement says the integration supports multiple payment methods including Stripe Link. - [Link for agents on Stripe: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/stripe-link-for-agents/stripe): Link for agents on Stripe is live as of 4 Nov 2026: Link Agent Wallet issues one-time credentials after customer approval; US and Canadian customers. - [UCP on Adobe Commerce: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/adobe-commerce): UCP on Adobe Commerce is announced as of 4 Nov 2026: Committed to UCP on 2026-02-18. Every claim has a source and a read date. - [UCP on Adyen: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/adyen-agentic): UCP on Adyen is pilot as of 4 Nov 2026: UCP Tokenization Handler documented; limited availability at launch. Every claim has a source and a read date. - [UCP on Amazon: not supported | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/amazon): UCP on Amazon is not supported as of 4 Nov 2026: Joined the UCP Tech Council on 24 Apr 2026. Every claim has a source and a read date. - [UCP on BigCommerce: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/bigcommerce): UCP on BigCommerce is pilot as of 4 Nov 2026: Google UCP checkout in early access via Commerce AI Labs for select US merchants. - [UCP on Braintree: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/braintree): UCP on Braintree is live as of 4 Nov 2026: Agent Ready UCP path: Google Pay single-use token processed through Braintree. - [UCP on Checkout.com: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/checkout-com): UCP on Checkout.com is pilot as of 4 Nov 2026: Page says it processes UCP via Google Pay rails; waitlist; ucp.dev endorser. - [UCP on commercetools: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/commercetools): UCP on commercetools is live as of 4 Nov 2026: AI Hub GA: Gemini discovery through checkout via UCP with Adyen, Stripe, CyberSource or Worldpay Access. - [UCP on Crossmint: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/crossmint): UCP on Crossmint is live as of 4 Nov 2026: Agent Commerce Toolkit picks UCP as a checkout path where merchants support it. - [UCP on Etsy: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/etsy): UCP on Etsy is announced as of 4 Nov 2026: Etsy is a member of the UCP Technical Council; no Etsy page found names UCP checkout. - [UCP on Google AI Mode: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/google-ai-mode-and-gemini-checkout): UCP on Google AI Mode is live as of 4 Nov 2026: UCP checkout in AI Mode and Gemini with Google Pay for select merchants; US, CA, AU eligible products. - [UCP on Meta Muse: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/meta-muse): UCP on Meta Muse is announced as of 4 Nov 2026: WSJ via AI Weekly: Shopify says Muse will complete Shopify orders through UCP by default. - [UCP on Copilot: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/microsoft-copilot): UCP on Copilot is live as of 4 Nov 2026: Copilot Checkout onboarding requires a Microsoft Merchant Center account with a UCP-compliant feed. - [UCP on PayPal: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/paypal): UCP on PayPal is live as of 4 Nov 2026: Agent Ready UCP path for Google AI Mode and Gemini via Google Pay handler and Orders v2. - [UCP on Salesforce CC: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/salesforce-commerce-cloud): UCP on Salesforce CC is live as of 4 Nov 2026: Innovations page lists UCP Integration GA Oct '26 for checkout in Gemini and Google AI Mode; merchant stays MoR. - [UCP on Shopify: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/shopify): UCP on Shopify is live as of 4 Nov 2026: UCP co-developer; Cart, Checkout and Order MCP servers at /api/ucp/mcp; agent profiles self-serve since Spring '26. - [UCP on Stripe: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/stripe): UCP on Stripe is live as of 4 Nov 2026: Stripe Payments handler for UCP checkouts documented; Stripe on UCP Tech Council. - [UCP on Target: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/target): UCP on Target is live as of 4 Nov 2026: Fact sheet: shoppers buy from Target in Google AI Mode and Gemini via UCP, which Target co-developed. - [UCP on Walmart: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/walmart): UCP on Walmart is announced as of 4 Nov 2026: Walmart and Google announced a Walmart-built Gemini shopping experience using UCP on 11 Jan 2026. - [UCP on Wayfair: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/wayfair): UCP on Wayfair is announced as of 4 Nov 2026: UCP co-developer; Wayfair said UCP checkout in AI Mode and Gemini is coming. - [UCP on WooCommerce: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/woocommerce): UCP on WooCommerce is pilot as of 4 Nov 2026: WooCommerce AI documentation: turning on agentic commerce makes the store's UCP services available to compatible. - [UCP on Worldpay: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/ucp/worldpay): UCP on Worldpay is announced as of 4 Nov 2026: Worldpay says it is working across UCP and is a ucp.dev endorser; no handler docs found. - [Verifiable Intent on Checkout.com: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/verifiable-intent/checkout-com): Verifiable Intent on Checkout.com is pilot as of 4 Nov 2026: Committed partner at the Verifiable Intent launch. Every claim has a source and a read date. - [Visa IC on Adyen: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-intelligent-commerce/adyen-agentic): Visa IC on Adyen is announced as of 4 Nov 2026: Visa named a strategic partner of Adyen Agentic; no VIC integration detail published. - [Visa IC on ChatGPT: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-intelligent-commerce/chatgpt-shopping): Visa IC on ChatGPT is announced as of 4 Nov 2026: Visa lists a Visa and OpenAI partnership on its Intelligent Commerce page. - [Visa IC on Checkout.com: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-intelligent-commerce/checkout-com): Visa IC on Checkout.com is pilot as of 4 Nov 2026: Agentic page diagram connects merchants to Visa Intelligent Commerce; waitlist. - [Visa IC on Crossmint: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-intelligent-commerce/crossmint): Visa IC on Crossmint is live as of 4 Nov 2026: Agent Checkouts uses VIC one-time card numbers for eligible Visa cards; toolkit live and self-serve. - [Visa IC on Copilot: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-intelligent-commerce/microsoft-copilot): Visa IC on Copilot is announced as of 4 Nov 2026: Visa named Microsoft as a Visa Intelligent Commerce AI partner at launch. - [Visa IC on Perplexity: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-intelligent-commerce/perplexity-shopping): Visa IC on Perplexity is announced as of 4 Nov 2026: Visa named Perplexity as a Visa Intelligent Commerce AI partner at launch. - [Visa IC on Skyfire: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-intelligent-commerce/skyfire): Visa IC on Skyfire is announced as of 4 Nov 2026: Homepage lists Visa among networks for tokenized agent card payments; no VIC docs found. - [Visa IC on Stripe: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-intelligent-commerce/stripe): Visa IC on Stripe is announced as of 4 Nov 2026: SPT docs say Stripe may use Visa Intelligent Commerce tokens on the seller's behalf. - [Visa TAP on Adyen: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-trusted-agent-protocol/adyen-agentic): Visa TAP on Adyen is announced as of 4 Nov 2026: Named by Visa among early TAP partners giving feedback. Every claim has a source and a read date. - [Visa TAP on Checkout.com: pilot | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-trusted-agent-protocol/checkout-com): Visa TAP on Checkout.com is pilot as of 4 Nov 2026: Agentic page lists TAP for agent identification; waitlist. Every claim has a source and a read date. - [Visa TAP on Coinbase: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-trusted-agent-protocol/coinbase): Visa TAP on Coinbase is announced as of 4 Nov 2026: Visa named Coinbase an early TAP partner and is aligning TAP with x402. - [Visa TAP on Copilot: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-trusted-agent-protocol/microsoft-copilot): Visa TAP on Copilot is announced as of 4 Nov 2026: Visa lists Microsoft among Trusted Agent Protocol contributors; no Copilot deployment stated. - [Visa TAP on Stripe: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-trusted-agent-protocol/stripe): Visa TAP on Stripe is announced as of 4 Nov 2026: Named by Visa among early TAP partners giving feedback. Every claim has a source and a read date. - [Visa TAP on Worldpay: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/visa-trusted-agent-protocol/worldpay): Visa TAP on Worldpay is announced as of 4 Nov 2026: Worldpay collaborating with Visa and Cloudflare to advance TAP. Every claim has a source and a read date. - [x402 on Adyen: announced | Agent Ready Checkout](https://agentreadycheckout.com/matrix/x402/adyen-agentic): x402 on Adyen is announced as of 4 Nov 2026: Premier member of the x402 Foundation; no Adyen x402 acceptance docs found. - [x402 on Coinbase: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/x402/coinbase): x402 on Coinbase is live as of 4 Nov 2026: x402 originator; CDP Facilitator settles on Base and Solana with OFAC and KYT screening. - [x402 on Crossmint: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/x402/crossmint): x402 on Crossmint is live as of 4 Nov 2026: Agent Wallets pay APIs per call over x402 with card-funded stablecoin wallets. - [x402 on Stripe: live | Agent Ready Checkout](https://agentreadycheckout.com/matrix/x402/stripe): x402 on Stripe is live as of 4 Nov 2026: Machine payments accept x402 USDC on Base; US businesses except New York. Every claim has a source and a read date. ## News Section index: https://agentreadycheckout.com/news/llms.txt - [News: dated changes to agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/news): 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. - [Amazon Agent Terms require self-identification | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-08-14-amazon-conditions-of-use-carry-agent-terms-requiring): 14 Aug 2026: Amazon's Conditions of Use, last updated 14 Aug 2026, include Agent Terms. Every claim has a source and a read date. - [commercetools adds fields for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-08-20-commercetools-adds-storefront-delivery-estimate-and): 20 Aug 2026: commercetools made storefront URLs, estimated delivery and carrier names standard Cart and Order fields. Every claim has a source and a read date. - [UCP 2026-08-25 release adds 3DS2 | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-08-25-ucp-release-2026-08-25-adds-3ds2-and-multi-vertical): 25 Aug 2026: UCP published protocol version 2026-08-25 with a multi-vertical refactor, 3DS2 payments security and grocery readiness. - [Storefront MCP cart tools end maintenance | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-08-31-shopify-storefront-mcp-cart-tools-reach-end-of): 31 Aug 2026: Shopify said the deprecated get_cart and update_cart tools on the Storefront MCP server would be maintained until 31 August 2026. - [PayOS and Browserbase: browser agents can pay | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-02-payos-and-browserbase-partner-so-browser-agents-can-pay): 2 Sep 2026: PayOS and Browserbase announced a partnership pairing PayOS agent payment credentials with Browserbase's hosted browsers. - [UCP forms a Payments Technical Council | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-02-ucp-forms-a-payments-technical-council-with-shopify): 2 Sep 2026: UCP announced a Payments Technical Council with Adyen, Ant International, Coinbase, Global Payments, Google, PayPal. - [Meta Muse launches with Stripe Link checkout | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-08-meta-launches-muse-personal-agent-with-stripe-link): 8 Sep 2026: Meta launched Muse in the US on iOS, Android and muse.ai. Muse checks out through Link by Stripe. Every claim has a source and a read date. - [Amazon v. Perplexity rehearing denied | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-10-ninth-circuit-declines-to-rehear-amazon-v-perplexity): 10 Sep 2026: The Ninth Circuit left in place its 4 Aug 2026 panel ruling that vacated the preliminary injunction barring Perplexity's Comet agent. - [Google holiday update adds UCP cart transfer | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-16-google-holiday-update-ucp-checkout-hub-adds-cart): 16 Sep 2026: Google said UCP already enables direct checkout for hundreds of thousands of brands across Google. Every claim has a source and a read date. - [Amazon blocks Meta's Muse agent | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-20-amazon-blocks-metas-muse-agent-from-shopping-on-amazon): 20 Sep 2026: Amazon began blocking Muse late Sunday 20 Sep 2026, twelve days after launch. Every claim has a source and a read date. - [Shopify opens Shop Pay checkout to Meta Muse | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-21-shopify-to-open-shop-pay-checkout-on-all-stores-to): 21 Sep 2026: Shopify said Muse will query the Shopify Catalog by default and complete orders through UCP, with Shop Pay as a wallet. - [PayPal and Meta Muse checkout partnership | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-22-paypal-announces-checkout-partnership-with-metas-muse): 22 Sep 2026: PayPal said it is partnering with Meta so customers can check out with PayPal inside Muse across PayPal merchants. - [x402 adds a Bitcoin Lightning scheme | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-23-x402-specification-adds-an-exact-scheme-for-bitcoin): 23 Sep 2026: The x402 Foundation merged an exact payment scheme for Lightning (lnbtc) into the x402 specification on 23 Sep 2026. - [Mastercard adds trust services to Agent Pay | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-30-mastercard-adds-trust-and-intelligence-services-to): 30 Sep 2026: Mastercard expanded Agent Pay with services that give issuers and merchants context on AI-initiated transactions. - [PayOS opens agentic payments self-serve | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-09-30-payos-opens-every-product-including-agentic-payments): 30 Sep 2026: PayOS said all its products, covering card, bank, business and identity data plus agentic payments, are available through its self-serve portal. - [Salesforce UCP checkout on Google goes GA | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-01-salesforce-lists-ucp-checkout-on-google-surfaces-as-ga): 1 Oct 2026: Salesforce's commerce innovations page marks 'Universal Commerce Protocol. Every claim has a source and a read date. - [BigCommerce opens Google UCP early access | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-02-bigcommerce-opens-google-ucp-checkout-as-early-access): 2 Oct 2026: A BigCommerce guide says the Google UCP checkout path is in early access through Commerce AI Labs for select US merchants. - [Crossmint launches Agent Commerce Toolkit | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-08-crossmint-launches-agent-commerce-toolkit-with-vic-and): 8 Oct 2026: Crossmint launched a live, self-serve toolkit combining a PCI vault, Visa Intelligent Commerce and Mastercard Agent Pay tokenized credentials. - [Shopify ends Global Catalog REST API | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-09-shopify-sets-2026-11-02-shutdown-for-the-global-catalog): 9 Oct 2026: Shopify announced the Global Catalog REST API stops serving traffic on 2 November 2026, pushing agent developers onto the Catalog API and UCP MCP. - [Shopify launches Shop MCP with Shop Pay | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-13-shopify-launches-shop-mcp-with-shop-pay-checkout-for): 13 Oct 2026: Shop MCP at mcp.shop.com gives an MCP agent Catalog search over 1 billion products without an API key for search. - [Google Universal Cart launches in the US | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-15-google-universal-cart-launches-in-the-us-across-search): 15 Oct 2026: Google's Universal Cart is available in the US across Search and the Gemini app. Every claim has a source and a read date. - [Shopify MCP adds UCP buyer consent | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-16-shopify-checkout-mcp-and-cart-mcp-add-ucp-buyer-consent): 16 Oct 2026: Shopify's changelog says its Checkout MCP and Cart MCP servers now support the UCP buyer consent capability. - [Agent Pay for Machines opens Early Access | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-20-mastercard-opens-agent-pay-for-machines-early-access): 20 Oct 2026: At Cloudflare Connect, Mastercard opened Early Access to Agent Pay for Machines, giving developers APIs, tools and documentation. - [Walmart Agent Profiles and MCP Agent Gateway | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-21-walmart-announces-agent-profiles-an-mcp-agent-gateway): 21 Oct 2026: Walmart will let customers authorise each AI agent with its own profile inside their account. Every claim has a source and a read date. - [Visa Oct 2026 rules: agent login IDs in 10.4 | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-10-24-visa-core-rules-october-2026-edition-names-agent): 24 Oct 2026: The 24 Oct 2026 Visa Core Rules keep the April agentic platform requirements. Every claim has a source and a read date. - [Mastercard and OpenAI agreement with Agent Pay | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-11-03-mastercard-discloses-an-openai-agreement-that-includes): 3 Nov 2026: The Paypers reports that Mastercard disclosed an agreement with OpenAI on its Q3 2026 earnings call, covering Agent Pay, payments. - [Google brings UCP checkout to Canada | Agent Ready Checkout](https://agentreadycheckout.com/news/2026-11-04-google-brings-ucp-powered-direct-checkout-to-canada-on): 4 Nov 2026: 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. ## Pay-per-call Section index: https://agentreadycheckout.com/pay-per-call/llms.txt - [Pay-per-call endpoints agents can buy today | Agent Ready Checkout](https://agentreadycheckout.com/pay-per-call): 9,977 x402 pay-per-call endpoints from Ora's paid-capability index: prices, networks and availability labels, read 5 Nov 2026 and credited to Ora. - [How many pay-per-call endpoints answer | Agent Ready Checkout](https://agentreadycheckout.com/pay-per-call/availability): Ora labels 31.6 percent of 9,977 x402 endpoints healthy: counts by method, price band and host size, and what the labels do not say, read 5 Nov 2026. - [x402 endpoints by topic tag in Ora's index | Agent Ready Checkout](https://agentreadycheckout.com/pay-per-call/by-tag): The thirty most common topic tags among 9,977 x402 pay-per-call endpoints in Ora's index, with entries, hosts, share healthy and median price, read 5 Nov 2026. - [Which networks x402 endpoints settle on | Agent Ready Checkout](https://agentreadycheckout.com/pay-per-call/networks): Base, Solana and the rest: the networks named by 9,977 x402 pay-per-call endpoints in Ora's index, with label counts and multi-network hosts, read 5 Nov 2026. - [How to price a pay-per-call endpoint | Agent Ready Checkout](https://agentreadycheckout.com/pay-per-call/price-a-call): Set a per-call price against the fee floor: Ora's index spread (median $0.01) beside Coinbase and Stripe's published fee lines, worked through, read 5 Nov 2026. - [What pay-per-call endpoints charge per call | Agent Ready Checkout](https://agentreadycheckout.com/pay-per-call/prices): Price spread of 9,935 x402 pay-per-call endpoints in Ora's index: median $0.01, percentiles, bands and the round figures sellers choose, read 5 Nov 2026. - [Who runs the most pay-per-call endpoints | Agent Ready Checkout](https://agentreadycheckout.com/pay-per-call/providers): 1,586 hosts list x402 pay-per-call endpoints in Ora's index; the ten largest hold 2.7 percent. Host sizes, the top 30 and label counts, read 5 Nov 2026. - [x402 or MPP for an API seller | Agent Ready Checkout](https://agentreadycheckout.com/pay-per-call/x402-or-mpp): x402 and MPP side by side for an API seller: disputes, fees, settlement rails and buyers, with Ora's index counts (9,977 x402 entries, no MPP tag) and sources. ## Platforms Section index: https://agentreadycheckout.com/platforms/llms.txt - [Commerce platforms and agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/platforms): Commerce platforms in the agent checkout matrix: Shopify, BigCommerce, Salesforce CC, Adobe Commerce, commercetools. Dated, sourced profiles. - [Adobe Commerce: platform profile | Agent Ready Checkout](https://agentreadycheckout.com/platforms/adobe-commerce): Adobe Commerce: Adobe's commerce platform (Magento lineage) that has committed to UCP and ACP and named itself an AP2. Matrix status, facts and sources. - [BigCommerce: platform profile | Agent Ready Checkout](https://agentreadycheckout.com/platforms/bigcommerce): BigCommerce (Commerce): Commerce platform whose parent endorsed UCP at launch. Matrix status, facts and sources. Every claim has a source and a read date. - [commercetools: platform profile | Agent Ready Checkout](https://agentreadycheckout.com/platforms/commercetools): commercetools: Composable commerce platform that was an ACP launch partner with Stripe and OpenAI and made its AI Hub. Matrix status, facts and sources. - [Salesforce CC: platform profile | Agent Ready Checkout](https://agentreadycheckout.com/platforms/salesforce-commerce-cloud): Salesforce Agentforce Commerce (Commerce Cloud): Enterprise commerce platform that announced ACP Instant Checkout. Matrix status, facts and sources. - [Shopify: platform profile | Agent Ready Checkout](https://agentreadycheckout.com/platforms/shopify): Shopify: Commerce platform that co-developed UCP with Google, syndicates merchant catalogs to AI chats through Agentic. Matrix status, facts and sources. - [WooCommerce: platform profile | Agent Ready Checkout](https://agentreadycheckout.com/platforms/woocommerce): WooCommerce: Open-source WordPress commerce plugin; its protocol status table lists MCP as beta and UCP and ACP. Matrix status, facts and sources. ## Alternatives - [Alternatives to Adobe Commerce | Agent Ready Checkout](https://agentreadycheckout.com/platforms/adobe-commerce/alternatives): The 5 alternatives to Adobe Commerce for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to BigCommerce for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/platforms/bigcommerce/alternatives): The 5 alternatives to BigCommerce for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to commercetools | Agent Ready Checkout](https://agentreadycheckout.com/platforms/commercetools/alternatives): The 5 alternatives to commercetools for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Salesforce CC | Agent Ready Checkout](https://agentreadycheckout.com/platforms/salesforce-commerce-cloud/alternatives): The 5 alternatives to Salesforce CC for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Shopify for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/platforms/shopify/alternatives): The 5 alternatives to Shopify for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to WooCommerce for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/platforms/woocommerce/alternatives): The 5 alternatives to WooCommerce for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Adyen for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/adyen-agentic/alternatives): The 9 alternatives to Adyen for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Braintree for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/braintree/alternatives): The 9 alternatives to Braintree for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Checkout.com for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/checkout-com/alternatives): The 9 alternatives to Checkout.com for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Coinbase for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/coinbase/alternatives): The 9 alternatives to Coinbase for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Crossmint for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/crossmint/alternatives): The 9 alternatives to Crossmint for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to PayOS for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/payos/alternatives): The 9 alternatives to PayOS for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to PayPal for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/paypal/alternatives): The 9 alternatives to PayPal for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Skyfire for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/skyfire/alternatives): The 9 alternatives to Skyfire for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Stripe for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/stripe/alternatives): The 9 alternatives to Stripe for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. - [Alternatives to Worldpay for agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/processors/worldpay/alternatives): The 9 alternatives to Worldpay for agent checkout, each with a sourced difference and protocol-by-protocol status, read 4 Nov 2026. ## Processors Section index: https://agentreadycheckout.com/processors/llms.txt - [Processors and enablers for agent payments | Agent Ready Checkout](https://agentreadycheckout.com/processors): Processors and enablers in the agent checkout matrix: Stripe, Adyen, PayPal, Checkout.com, Braintree, Coinbase, Crossmint. Dated, sourced profiles. - [Adyen: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/adyen-agentic): Adyen Agentic: Adyen's modular agentic commerce APIs (Agentic Feed, Agentic Cart, Agentic Payments). Matrix status, facts and sources. - [Braintree: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/braintree): Braintree (PayPal Enterprise Payments): PayPal's enterprise processor, rebranded PayPal Enterprise Payments. Matrix status, facts and sources. - [Checkout.com: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/checkout-com): Checkout.com agentic commerce: Checkout.com's single-integration agentic layer covering ACP, UCP. Matrix status, facts and sources. - [Coinbase: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/coinbase): Coinbase Developer Platform (x402): Originator of x402, now under the Linux Foundation's x402 Foundation. Matrix status, facts and sources. - [Crossmint: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/crossmint): Crossmint: Agent-side payment platform: Agent Cards. Matrix status, facts and sources. Every claim has a source and a read date. - [PayOS: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/payos): PayOS: Payments data platform with PayOS Agent Tokens and PayOS Wallet. Matrix status, facts and sources. Every claim has a source and a read date. - [PayPal: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/paypal): PayPal agentic commerce services: PayPal's Agent Ready. Matrix status, facts and sources. Every claim has a source and a read date. - [Skyfire: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/skyfire): Skyfire: Agent identity and payments network: KYA and KYAPay tokens bind platform. Matrix status, facts and sources. Every claim has a source and a read date. - [Stripe: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/stripe): Stripe: Processor and co-author of ACP and MPP. Sells to agents through Agentic Commerce Suite with Shared Payment. Matrix status, facts and sources. - [Worldpay: processor profile | Agent Ready Checkout](https://agentreadycheckout.com/processors/worldpay): Worldpay (Global Payments): Worldpay, now part of Global Payments, positions fraud tools, credential management. Matrix status, facts and sources. ## Protocols Section index: https://agentreadycheckout.com/protocols/llms.txt - [Protocols and programs for agent payments | Agent Ready Checkout](https://agentreadycheckout.com/protocols): Protocols and programs in the agent checkout matrix: ACP, UCP, AP2, Visa TAP, Visa IC, Mastercard Agent Pay. Dated, sourced profiles. - [ACP: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/acp): Agentic Commerce Protocol (ACP): An Apache 2.0 checkout protocol between an AI agent, a merchant and a payment. Matrix status, facts and sources. - [Agent Pay for Machines: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/agent-pay-for-machines): Mastercard Agent Pay for Machines (AP4M): Mastercard's machine-to-machine payment service for agents buying digital. Matrix status, facts and sources. - [Amex ACE: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/amex-ace): American Express Agentic Commerce Experiences (ACE): American Express's developer kit for agent payments. Matrix status, facts and sources. - [AP2: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/ap2): Agent Payments Protocol (AP2): A mandate-based protocol in which signed verifiable credentials record what the user. Matrix status, facts and sources. - [Mastercard Agent Pay: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/mastercard-agent-pay): Mastercard Agent Pay: Mastercard's agentic payments program. Matrix status, facts and sources. Every claim has a source and a read date. - [MPP: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/mpp): Machine Payments Protocol (MPP): An HTTP 402 protocol co-authored by Tempo and Stripe with challenge. Matrix status, facts and sources. - [Link for agents: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/stripe-link-for-agents): Stripe Link for agents (Link Agent Wallet): Stripe's consumer wallet exposed to agents. Matrix status, facts and sources. - [UCP: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/ucp): Universal Commerce Protocol (UCP): An Apache 2.0 protocol for discovery, cart, checkout and orders between agents. Matrix status, facts and sources. - [Verifiable Intent: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/verifiable-intent): Verifiable Intent (VI): An open SD-JWT credential format that chains credential provider, user and agent. Matrix status, facts and sources. - [Visa IC: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/visa-intelligent-commerce): Visa Intelligent Commerce (incl. Intelligent Commerce Connect): Visa's program for agent payments. Matrix status, facts and sources. - [Visa TAP: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/visa-trusted-agent-protocol): Visa Trusted Agent Protocol (TAP): Visa's agent identity scheme: an agent signs each HTTP request with HTTP Message. Matrix status, facts and sources. - [x402: protocol profile | Agent Ready Checkout](https://agentreadycheckout.com/protocols/x402): x402: An HTTP 402 payment protocol: a server answers 402 with payment requirements, the client pays. Matrix status, facts and sources. ## Retailers Section index: https://agentreadycheckout.com/retailers/llms.txt - [Retailers in the matrix | Agent Ready Checkout](https://agentreadycheckout.com/retailers): Retailers in the agent checkout matrix: Walmart, Target, Etsy, Wayfair, Amazon. Dated, sourced profiles. Every claim has a source and a read date. - [Amazon: retailer profile | Agent Ready Checkout](https://agentreadycheckout.com/retailers/amazon): Amazon: Runs its own shopping agents (Alexa for Shopping, Buy for Me) while its robots.txt disallows third-party agent. Matrix status, facts and sources. - [Etsy: retailer profile | Agent Ready Checkout](https://agentreadycheckout.com/retailers/etsy): Etsy: Marketplace that was an early ChatGPT Instant Checkout seller and sells some listings via guest checkout. Matrix status, facts and sources. - [Target: retailer profile | Agent Ready Checkout](https://agentreadycheckout.com/retailers/target): Target: UCP co-developer with checkout in Google AI Mode and Gemini, an early Copilot Checkout loyalty partner. Matrix status, facts and sources. - [Walmart: retailer profile | Agent Ready Checkout](https://agentreadycheckout.com/retailers/walmart): Walmart: Retailer that sold via ChatGPT Instant Checkout, built a UCP experience in Gemini, runs the Sparky assistant. Matrix status, facts and sources. - [Wayfair: retailer profile | Agent Ready Checkout](https://agentreadycheckout.com/retailers/wayfair): Wayfair: UCP co-developer and Tech Council member. Matrix status, facts and sources. Every claim has a source and a read date. ## Rules tracker - [Liability and rules tracker for agent payments | Agent Ready Checkout](https://agentreadycheckout.com/rules): A dated table of card-network and framework changes that touch agent-initiated payments, with the document, page reference and who carries the dispute. ## Agent surfaces Section index: https://agentreadycheckout.com/surfaces/llms.txt - [Agent surfaces that shop and pay | Agent Ready Checkout](https://agentreadycheckout.com/surfaces): Agent surfaces in the agent checkout matrix: ChatGPT, Google AI Mode, Perplexity, Amazon Rufus, Meta Muse, Copilot. Dated, sourced profiles. - [Amazon Rufus: agent surface profile | Agent Ready Checkout](https://agentreadycheckout.com/surfaces/amazon-rufus-and-buy-for-me): Amazon Rufus, Alexa for Shopping and Buy for Me: Amazon's own shopping agents. Matrix status, facts and sources. Every claim has a source and a read date. - [ChatGPT: agent surface profile | Agent Ready Checkout](https://agentreadycheckout.com/surfaces/chatgpt-shopping): ChatGPT shopping (Instant Checkout, ACP discovery, ChatGPT agent): OpenAI's shopping surface in ChatGPT. Matrix status, facts and sources. - [Google AI Mode: agent surface profile | Agent Ready Checkout](https://agentreadycheckout.com/surfaces/google-ai-mode-and-gemini-checkout): Google AI Mode and Gemini checkout (UCP): Google's UCP-powered checkout lets shoppers buy eligible products inside AI. Matrix status, facts and sources. - [Meta Muse: agent surface profile | Agent Ready Checkout](https://agentreadycheckout.com/surfaces/meta-muse): Meta Muse: Meta's personal AI agent, launched in the US on 8 Sep 2026. Matrix status, facts and sources. Every claim has a source and a read date. - [Copilot: agent surface profile | Agent Ready Checkout](https://agentreadycheckout.com/surfaces/microsoft-copilot): Microsoft Copilot Checkout: In-chat checkout in Copilot for US buyers in USD, with PayPal. Matrix status, facts and sources. - [Perplexity: agent surface profile | Agent Ready Checkout](https://agentreadycheckout.com/surfaces/perplexity-shopping): Perplexity shopping and Comet: Perplexity's answer-engine shopping with PayPal-powered Instant Buy. Matrix status, facts and sources. ## Vendors Section index: https://agentreadycheckout.com/vendors/llms.txt - [Vendors in agent checkout | Agent Ready Checkout](https://agentreadycheckout.com/vendors): 73 vendors that move or authorise an agent's payment: processors, networks, wallets, agent-pay builders, platforms, surfaces, retailers. Dated and sourced. - [Adobe Commerce: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/adobe-commerce): Adobe Commerce: Enterprise commerce platform (formerly Magento) committed to UCP and ACP. Sourced vendor profile. Standards, checks and prices. - [Adyen: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/adyen): Adyen: Global acquirer and PSP whose Adyen Agentic suite (feed, cart and payments APIs) lets enterprise merchants accept agent orders. Sourced vendor profile. - [Affirm: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/affirm): Affirm: Pay-over-time network that supports Google's AP2 to put buy now, pay later into agent checkouts. Sourced vendor profile. - [Airwallex: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/airwallex): Airwallex: Global payments and treasury company selling an Agentic Commerce Suite. Sourced vendor profile. Standards, checks and prices. - [Alchemy: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/alchemy): Alchemy: Blockchain developer platform whose agent offering gives agents a card to spend anywhere cards are accepted. Sourced vendor profile. - [Amazon (as a retailer): vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/amazon): Amazon (as a retailer): Online retailer whose Conditions of Use carry Agent Terms that require agents to identify themselves and let. Sourced vendor profile. - [Amazon (Alexa for Shopping and Buy for Me) | Agent Ready Checkout](https://agentreadycheckout.com/vendors/amazon-rufus-buy-for-me): Amazon (Alexa for Shopping and Buy for Me): Amazon's own shopping agents: Alexa for Shopping. Sourced vendor profile. Standards, checks and prices. - [American Express: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/american-express): American Express: Card network and issuer that publishes the Agentic Commerce Experiences (ACE) developer kit. Sourced vendor profile. - [Ant International (Alipay+): vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/ant-international): Ant International (Alipay+): Operator of the Alipay+ wallet network and Antom. Sourced vendor profile. Standards, checks and prices. - [BigCommerce (Commerce): vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/bigcommerce): BigCommerce (Commerce): SaaS commerce platform, part of the company Commerce with Feedonomics. Sourced vendor profile. Standards, checks and prices. - [Braintree (PayPal Enterprise Payments) | Agent Ready Checkout](https://agentreadycheckout.com/vendors/braintree): Braintree (PayPal Enterprise Payments): PayPal's enterprise processing platform. Sourced vendor profile. Standards, checks and prices. - [Agent-pay builders: agent checkout vendors | Agent Ready Checkout](https://agentreadycheckout.com/vendors/by-type/agent-pay): 19 agent-pay builders in agent checkout, with the standards each states, price lines and checks on file, every fact sourced and dated. - [Commerce platforms: agent checkout vendors | Agent Ready Checkout](https://agentreadycheckout.com/vendors/by-type/commerce-platform): 9 commerce platforms in agent checkout, with the standards each states, price lines and checks on file, every fact sourced and dated. - [Card networks: agent checkout vendors | Agent Ready Checkout](https://agentreadycheckout.com/vendors/by-type/network): 4 card networks in agent checkout, with the standards each states, price lines and checks on file, every fact sourced and dated. - [Processors: agent checkout vendors | Agent Ready Checkout](https://agentreadycheckout.com/vendors/by-type/processor): 13 processors in agent checkout, with the standards each states, price lines and checks on file, every fact sourced and dated. - [Retailers: agent checkout vendors | Agent Ready Checkout](https://agentreadycheckout.com/vendors/by-type/retailer): 9 retailers in agent checkout, with the standards each states, price lines and checks on file, every fact sourced and dated. - [Rules programmes: agent checkout vendors | Agent Ready Checkout](https://agentreadycheckout.com/vendors/by-type/rules-programme): 7 rules and identity programmes in agent checkout, with the standards each states, price lines and checks on file, every fact sourced and dated. - [Agent surfaces: agent checkout vendors | Agent Ready Checkout](https://agentreadycheckout.com/vendors/by-type/surface): 6 agent surfaces in agent checkout, with the standards each states, price lines and checks on file, every fact sourced and dated. - [Wallets: agent checkout vendors | Agent Ready Checkout](https://agentreadycheckout.com/vendors/by-type/wallet): 6 wallets and pay-later services in agent checkout, with the standards each states, price lines and checks on file, every fact sourced and dated. - [Catena: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/catena-labs): Catena: Governance and banking platform for AI agents. Sourced vendor profile. Standards, checks and prices. Read 5 Nov 2026. - [Checkout.com: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/checkout-com): Checkout.com: Enterprise acquirer and PSP that is a certified ACP payment handler for ChatGPT. Sourced vendor profile. Standards, checks and prices. - [Chewy: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/chewy): Chewy: Pet retailer that publishes a production UCP business profile at chewy.com/.well-known/ucp with checkout. Sourced vendor profile. - [Circle: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/circle): Circle: Issuer of USDC and EURC whose Agent Stack gives agents wallets and balances, a machine-readable marketplace of paid services. Sourced vendor profile. - [Cloudflare: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/cloudflare): Cloudflare: Network and CDN that verifies signed agent traffic with Web Bot Auth, the authentication layer under Visa's Trusted Agent. Sourced vendor profile. - [Coinbase Developer Platform: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/coinbase): Coinbase Developer Platform: Coinbase's developer platform: creator of x402, operator of the CDP x402 facilitator. Sourced vendor profile. - [commercetools: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/commercetools): commercetools: Headless enterprise commerce platform whose AI Hub add-on connects stores to Gemini over UCP and to ChatGPT through. Sourced vendor profile. - [Crossmint: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/crossmint): Crossmint: Agent payments infrastructure: a card vault with network agentic tokens, Agent Cards. Sourced vendor profile. - [eBay: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/ebay): eBay: Marketplace whose User Agreement, effective 20 Feb 2026, bans buy-for-me agents. Sourced vendor profile. Standards, checks and prices. - [EMVCo: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/emvco): EMVCo: Technical body owned by the card networks that writes EMV specifications (3-D Secure, Payment Tokenisation, SRC). Sourced vendor profile. - [Etsy: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/etsy): Etsy: Marketplace whose listings can be bought directly in ChatGPT, Gemini, Google AI Mode and Copilot. Sourced vendor profile. - [FIDO Alliance: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/fido-alliance): FIDO Alliance: Open standards body behind passkeys; since April 2026 the steward of AP2 and the home of an Agentic Authentication. Sourced vendor profile. - [Firmly: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/firmly): Firmly: Agentic commerce platform that extends a merchant's real-time catalog, product pages and checkout into AI agents, articles. Sourced vendor profile. - [Fiserv: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/fiserv): Fiserv: Merchant acquirer and owner of the Clover point-of-sale platform. Sourced vendor profile. Standards, checks and prices. - [Forter: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/forter): Forter: Fraud and identity decisioning company that sells Agentic Orchestration. Sourced vendor profile. Standards, checks and prices. - [Google (AI Mode and Gemini checkout) | Agent Ready Checkout](https://agentreadycheckout.com/vendors/google-ai-mode-gemini): Google (AI Mode and Gemini checkout): Google's agent checkout in AI Mode in Search and the Gemini app, built on UCP. Sourced vendor profile. - [Google Pay: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/google-pay): Google Pay: Google's wallet and the payment handler (com.google.pay) behind UCP checkout in AI Mode and Gemini. Sourced vendor profile. - [Gr4vy: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/gr4vy): Gr4vy: Payment orchestration platform with an Agentic Developer Kit that helps merchants put a storefront inside AI environments such. Sourced vendor profile. - [Highnote: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/highnote): Highnote: Card issuing and acquiring platform that issues virtual cards to AI agents with programmable controls evaluated. Sourced vendor profile. - [The Home Depot: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/home-depot): The Home Depot: Home improvement retailer that publishes a production UCP business profile on homedepot.com with a checkout service. Sourced vendor profile. - [HUMAN Security: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/human-security): HUMAN Security: Bot and fraud defence company whose AgenticTrust product detects AI agent traffic on merchant sites. Sourced vendor profile. - [Instacart: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/instacart): Instacart: Grocery marketplace that launched an Instacart app in ChatGPT in December 2025 with embedded Instant Checkout on ACP. Sourced vendor profile. - [J.P. Morgan Payments: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/jpmorgan-payments): J.P. Morgan Payments: JPMorgan Chase's merchant acquiring and payments business. Sourced vendor profile. Standards, checks and prices. - [Kite: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/kite-ai): Kite: Payments chain for agents: an EVM-compatible blockchain with native stablecoin settlement, plus Kite Passport for agent identity. Sourced vendor profile. - [Klarna: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/klarna): Klarna: Flexible payments provider and digital bank that launched the Agentic Product Protocol. Sourced vendor profile. Standards, checks and prices. - [Lightspark: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/lightspark): Lightspark: Money-movement API for accounts, payments, cards and stablecoins with Bitcoin Lightning support. Sourced vendor profile. - [Link (Stripe): vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/link): Link (Stripe): Stripe's consumer wallet, used by more than 300 million people per Stripe. Sourced vendor profile. Standards, checks and prices. - [Lithic: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/lithic): Lithic: Card issuing platform that gives AI agents virtual cards with merchant locking. Sourced vendor profile. Standards, checks and prices. - [Mastercard: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/mastercard): Mastercard: Card network behind Mastercard Agent Pay (agentic tokens for registered agents), Agent Pay for Machines. Sourced vendor profile. - [Meta (Muse): vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/meta-muse): Meta (Muse): Meta's personal AI agent, launched September 2026, that runs in its own secure virtual machine with a browser and can buy. Sourced vendor profile. - [Microsoft (Copilot Checkout): vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/microsoft-copilot): Microsoft (Copilot Checkout): Microsoft's Copilot Checkout, which completes purchases inside Copilot with the merchant as merchant. Sourced vendor profile. - [Mirakl: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/mirakl): Mirakl: Marketplace and commerce platform vendor whose Mirakl Nexus prepares retailer and brand catalogs for LLM discovery and runs. Sourced vendor profile. - [MoonPay: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/moonpay): MoonPay: Crypto on-ramp company whose MoonAgents gives AI agents a wallet, a virtual account, zero-fee stablecoin on-ramps and skills. Sourced vendor profile. - [Nevermined: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/nevermined): Nevermined: Payments infrastructure for AI agents: spend mandates enforced per agent, Nevermined Pay across cards. Sourced vendor profile. - [Nuvei: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/nuvei): Nuvei: Global payments processor building Nuvei Agentic, a protocol-agnostic execution layer with a Know Your Agent registry. Sourced vendor profile. - [OpenAI (ChatGPT shopping): vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/openai-chatgpt): OpenAI (ChatGPT shopping): OpenAI's shopping in ChatGPT: product discovery from merchant feeds shared over ACP. Sourced vendor profile. - [Payman AI: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/payman): Payman AI: Agentic banking vendor that deploys AI agents inside banks and credit unions to execute real transactions for customers. Sourced vendor profile. - [PayOS: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/payos): PayOS: Processor-agnostic payments data and agent-token company. Sourced vendor profile. Standards, checks and prices. Read 5 Nov 2026. - [PayPal: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/paypal): PayPal: Wallet and payments company whose agentic commerce services. Sourced vendor profile. Standards, checks and prices. - [Perplexity (shopping and Comet): vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/perplexity): Perplexity (shopping and Comet): AI answer engine and Comet browser with in-chat shopping. Sourced vendor profile. Standards, checks and prices. - [Razorpay: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/razorpay): Razorpay: Indian payments company that launched Agentic Payments with NPCI and OpenAI in October 2025. Sourced vendor profile. - [Rye: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/rye): Rye: Universal Checkout API for AI apps and agents: given a product URL and a payment token. Sourced vendor profile. Standards, checks and prices. - [Salesforce Commerce Cloud (Agentforce Commerce) | Agent Ready Checkout](https://agentreadycheckout.com/vendors/salesforce-commerce-cloud): Salesforce Commerce Cloud (Agentforce Commerce): Enterprise commerce platform with UCP checkout on Google surfaces. Sourced vendor profile. - [Shop Pay: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/shop-pay): Shop Pay: Shopify's wallet, which agents can use through Shop MCP. Sourced vendor profile. Standards, checks and prices. - [Shopify: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/shopify): Shopify: Commerce platform that co-developed UCP with Google, syndicates merchant catalogs to ChatGPT, Google AI Mode and Gemini. Sourced vendor profile. - [Shopware: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/shopware): Shopware: Open-source commerce platform with an Agentic Commerce Plugin that exposes product data and capabilities to AI channels. Sourced vendor profile. - [Skyfire: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/skyfire): Skyfire: Agent identity and payments network that issues KYA (Know Your Agent) identity tokens and payment tokens. Sourced vendor profile. - [Stripe: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/stripe): Stripe: Payments processor that co-developed ACP with OpenAI and MPP with Tempo, issues Shared Payment Tokens to agents. Sourced vendor profile. - [Sumvin: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/sumvin): Sumvin: Consumer agent app built on identity-anchored money. Sourced vendor profile. Standards, checks and prices. Read 5 Nov 2026. - [Target: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/target): Target: U.S. retailer selling through Google Search AI Mode and the Gemini app over UCP. Sourced vendor profile. Standards, checks and prices. - [Tempo: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/tempo): Tempo: Payments-first Layer 1 blockchain incubated by Stripe with a crypto venture firm for stablecoin payments. Sourced vendor profile. - [thirdweb: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/thirdweb): thirdweb: Web3 developer platform whose thirdweb Payments product lets APIs accept x402 and agent payments in any token across many. Sourced vendor profile. - [Trulioo: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/trulioo): Trulioo: Identity verification company whose Know Your Agent (KYA) programme verifies the organisation behind an AI agent. Sourced vendor profile. - [UnionPay International: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/unionpay-international): UnionPay International: International arm of the UnionPay card scheme. Sourced vendor profile. Standards, checks and prices. - [Visa: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/visa): Visa: Card network that runs Visa Intelligent Commerce. Sourced vendor profile. Standards, checks and prices. Read 5 Nov 2026. - [VTEX: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/vtex): VTEX: Enterprise commerce and marketplace platform that endorses UCP and publishes guidance on preparing VTEX catalogs. Sourced vendor profile. - [Walmart: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/walmart): Walmart: U.S. retailer that sells through ChatGPT, Gemini and Muse, runs its own Sparky agent. Sourced vendor profile. Standards, checks and prices. - [Wayfair: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/wayfair): Wayfair: Home goods retailer that co-developed UCP with Google and lists UCP checkout from Wayfair in AI Mode and Gemini while staying. Sourced vendor profile. - [WooCommerce: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/woocommerce): WooCommerce: Open-source WordPress commerce plugin with an agentic commerce track. Sourced vendor profile. Standards, checks and prices. - [Worldline: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/worldline): Worldline: European acquirer and payment processor that says agent-driven payments are in production on Visa and Mastercard with ING. Sourced vendor profile. - [Worldpay: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/worldpay): Worldpay: Merchant acquirer, now part of Global Payments, offering fraud checks, credential management and orchestration. Sourced vendor profile. - [x402 Foundation: vendor profile | Agent Ready Checkout](https://agentreadycheckout.com/vendors/x402-foundation): x402 Foundation: Linux Foundation project that governs the x402 protocol (HTTP 402 payments for agents and APIs) under vendor-neutral. Sourced vendor profile.