Klarna announced that it is joining Google's Universal Commerce Protocol (UCP), an open standard designed to help AI agents and commerce systems work together across the full shopping lifecycle, from discovery and purchase through post-purchase support. UCP enables consumers to shop seamlessly in AI conversations while giving agents, merchant systems, and payment providers a standardized way to interact across multiple AI platforms. The announcement builds on Klarna's recent support for Google's Agent Payments Protocol (AP2) and expands Klarna's multiyear partnership with Google across Google Pay, Google Store, Google Play, and Google Cloud infrastructure. Together, these efforts reflect ongoing collaboration to support open standards as AI increasingly shapes how consumers shop online.