Micro Case Study: How American Express is underwriting AI agent error to unlock trust in $trillion-scale agentic commerce - Tearsheet

"American Express has launched Agentic Commerce Experiences (ACE) Developer Kit, which formalizes and verifies user intent before any transaction takes place. The firm has also introduced what it calls an “industry-first” protection against AI agent error, agreeing to cover eligible transactions when an agent executes an authorized but unintended purchase."

"The new ACE Kit shifts payments from simple authorization to intent-driven execution: User intent is captured as a structured, verifiable, and enforceable input. That intent is authenticated and tied to tokenized credentials before any transaction is initiated. Agents can transact on behalf of card members only within clearly defined, authenticated intent and control layers. Amex extends purchase protection into agent-executed transactions."

"“The model includes card member enrollment and authentication and gives card members the ability to manage controls directly in the Amex app - using structured intent, spend limits, merchant preferences, and tokenized credentials so the agent can only act within clearly defined boundaries set by the card member,” noted Luke Gebb, EVP and Head of Global Innovation at American Express."

"“The core of our approach is that intent is not treated as a loose instruction - it's treated as a structured, verifiable representation of Card Member intent that the system can evaluate and enforce,” he added."

American Express introduced Agentic Commerce Experiences (ACE) Developer Kit to ensure AI agents execute the right payments by formalizing and verifying user intent before any transaction. The system shifts payments from simple authorization to intent-driven execution. User intent is captured as structured, verifiable, and enforceable input, authenticated and tied to tokenized credentials before initiating a transaction. Agents can transact only within clearly defined, authenticated intent and control layers. American Express also extends purchase protection to agent-executed transactions, covering eligible transactions when an agent executes an authorized but unintended purchase. The approach aims to reduce ambiguity before execution rather than resolving disputes afterward.

Read at Tearsheet