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Santander and Mastercard recorded the first confirmed agentic payment transaction in Europe this week 1, completing a consumer purchase via an agent interface using Mastercard Agent Pay infrastructure. The transaction was processed through Santander’s Spanish banking operations. Mastercard described it as part of Agent Pay’s international rollout programme, which the company began formalising after the US production deployments in October 2025.
The European pilot involved a consumer purchasing through a conversational agent interface connected to Santander’s payment infrastructure. Both parties confirmed the transaction as a production deployment rather than a controlled demonstration, distinguishing it from earlier proofs-of-concept.
The European transaction follows a geographic progression: US production deployments at Citibank and US Bank in October 2025 3, the Australian first transaction confirmed in January 2026 2, and now Europe in March 2026. Three continents have confirmed agent payment transactions via Mastercard’s infrastructure within a five-month window.
This is the fourth Pilots-lane event since tracking began and the first Pilots-only week since Amazon Rufus in November 2025. The geographic distribution of Mastercard’s deployment confirms Agent Pay operating cross-jurisdictionally; the same technical stack processed transactions in North America, Oceania, and Europe across the period.
First fully authenticated AI-agent payment executed within Santander's regulated banking infrastructure via Mastercard Agent Pay in a controlled production test.
Mastercard Newsroom