Santander and Mastercard say they have completed Europe’s first live end-to-end AI agent payment.
The payment was executed by an AI agent, with the two banks describing it as the first agentic payment carried out within a regulated banking framework.
An AI agent payment is designed to remove a moment of effort, and that can change the customer journey far beyond checkout.
In discussing the news, 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."
What Santander And Mastercard Actually Tested
Santander carried out the transaction in a controlled environment using Mastercard Agent Pay.
The companies say Santander processed the transaction through its 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. The approach also maintains strict standards of security, privacy, and consumer protection while using existing payment networks.
Mastercard says Mastercard Agent Pay integrates AI agents into the payment flow as visible, governed participants. Adding that PayOS supported the end-to-end orchestration of the transaction.
Why This Strengthens The Case That Finance Leads
In a recent CX Today article, we cited Lloyds Banking Group as an enterprise blueprint for agentic AI adoption, highlighting that generative AI delivered around £50 million of value for Lloyds in 2025, and over 50 AI use cases went live that year.
Also Lloyds expects £100 million in incremental value in 2026 alone from its next wave of agentic AI, with income verification for mortgages shifting from days to seconds, while fraud and dispute workflows that once stretched across weeks are now resolved in days.
The earlier article also pointed to Mastercard’s broader bet on agentic AI. Mastercard believes a third of enterprise software applications could incorporate agentic AI by 2028, and it expects a significant percentage of customer interactions and operational tasks to be supported by AI agents by 2030.
This new Santander and Mastercard pilot extends the storyline into payments. It suggests agentic AI is not only taking on service and operational tasks, it is also starting to execute transactions.
And innovation is unlikely to stop here, Kelly Devine, President, Europe at Mastercard said:
"Agentic payments represent a profound shift in how commerce is initiated and executed. This milestone with Banco Santander demonstrates that innovation and trust can advance together."
Where Friction Could Move Next In The Customer Journey
Checkout has been a long-running battleground for digital teams. Faster flows helped, and wallets helped too.