Amex introduces a framework to prevent AI agents from making unauthorized purchases

Language models do not behave the same way twice, so an AI shopping agent can act outside its instructions. American Express's new framework records your request, with limits like budget and merchant, as a signed token the agent trades for a one-time payment credential at checkout, instead of your card number. The aim is to keep purchases tied to what the customer approved.

Summary written with AI by HowTechMoves, based on reporting by TechCrunch.