Banco Santander and Mastercard announced the successful completion of Europe’s first live end-to-end payment executed by an AI agent, representing the first agentic payment carried out within a regulated banking framework and marking a significant milestone in the application of AI systems capable of initiating and completing transactions on behalf of customers.
Santander carried out the transaction in a controlled environment using Mastercard Agent Pay. The transaction was processed through Santander’s live payments infrastructure to validate the end-to-end operational and control framework under real conditions. The solution enables AI agents to initiate and execute payments on behalf of customers within predefined limits and permissions. In practical terms, this allows an AI system to securely and transparently complete a purchase using existing payment networks, while maintaining strict standards of security, privacy and consumer protection.
Matías Sánchez, global head of Cards and Digital Solutions at Santander, said: “At Santander, we see AI as a transformative force in the evolution of payments. Our role is not only to adopt innovation, but to shape it responsibly, embedding security, governance and customer protection by design. As AI agents become part of everyday commerce, building trusted, scalable frameworks will be essential to unlocking their full potential.”
The milestone confirms Santander’s technical and operational readiness to support emerging AI-driven transaction models. The bank will now move into extended testing and scaling, exploring additional use cases and partnerships while maintaining strong controls, resilience and regulatory alignment.
Mastercard Agent Pay integrates AI agents into the payment flow as visible, governed participants, enabling seamless interaction between issuers, acquirers and merchants. PayOS supported the end-to-end orchestration of the transaction.
Kelly Devine, President, Europe at Mastercard, said: “Agentic payments represent a profound shift in how commerce is initiated and executed. With Mastercard Agent Pay, we are applying the same principles that have defined our network for decades — security, trust, interoperability and global scale — to a new era of AI-enabled commerce. This milestone with Banco Santander demonstrates that innovation and trust can advance together.”
The pilot was conducted within Santander’s regulated payment framework and does not constitute a commercial rollout at this stage.
Banco Santander (SAN SM) is a leading commercial bank, founded in 1857 and headquartered in Spain and one of the largest banks in the world by market capitalization. The group’s activities are consolidated into five global businesses: Retail & Commercial Banking, Digital Consumer Bank, Corporate & Investment Banking (CIB), Wealth Management & Insurance and Payments (PagoNxt and Cards). This operating model allows the bank to better leverage its unique combination of global scale and local leadership. Santander aims to be the best open financial services platform providing services to individuals, SMEs, corporates, financial institutions and governments. The bank’s purpose is to help people and businesses prosper in a simple, personal and fair way. At the end of the third quarter of 2025, Banco Santander had €1.3 trillion in total funds, 178 million customers, 7,400 branches and 201,000 employees.
Visit https://www.bancosantander.es/en/particulares/
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