Amex debuts ACE payments kit

American Express said on April 14 that it is releasing a developer kit that lets approved artificial intelligence agents make purchases on its payments network. (americanexpress.com) The kit, called Agentic Commerce Experiences, or ACE, is being offered to select developers and is designed to work with existing and emerging agent protocols. American Express said it will support “intent-driven transactions” with end-to-end visibility across the commerce process on its closed-loop network. (americanexpress.com) American Express listed five services inside the kit: agent registration, account enablement, intent intelligence, payment credentials, and cart context. The company said those tools are meant to verify agents, let cardholders enroll cards, capture purchase intent, issue tokenized payment credentials, and preserve cart details for authorization and disputes. (americanexpress.com) In plain terms, the product is trying to solve a basic problem in artificial intelligence shopping: if software is going to buy a flight or refill inventory, the payment network has to know which agent is acting, what the user approved, and what was actually bought. American Express tied ACE to trust and control rather than just checkout speed. (americanexpress.com) That framing has been building for months inside the company. In its March 25, 2026 chairman’s letter, Chief Executive Officer Stephen Squeri said American Express would publish the ACE kit in April and described a market where agents could book travel, manage expenses, and complete payments autonomously. (americanexpress.com) American Express also said in February that it had already completed “thousands” of artificial-intelligence-assisted transactions through pilots with platform partners. The company said those tests were part of work on industry standards for more secure agentic payments. (americanexpress.com) The company paired the launch with what it called Amex Agent Purchase Protection, which it described as a first-of-its-kind commitment for purchases made by registered agents on its network. American Express said the protection extends to eligible card member purchases made by enrolled agents, adding a consumer-protection layer to the developer release. (americanexpress.com) American Express is not opening the system to anyone with an application programming interface key. Its developer materials say access is for select developers, and the first control in the stack is agent registration, which is meant to ensure only verified agents can transact. (americanexpress.com) That makes payments a harder test than many other agent tasks. A chatbot can suggest a restaurant with little downside, but a payment product has to handle authentication, authorization, tokenized credentials, and dispute evidence in the same flow. (americanexpress.com) The release turns a broad industry argument about “agents” into a narrower one about permissions, records, and liability. American Express is betting that if software is going to spend money, the network that moves the money will need to see far more of the transaction than a typical checkout button does today. (americanexpress.com)