Mastercard and Santander Complete Europe’s First Live AI Agent Payment

As AI agents move from supporting decisions to making purchases autonomously, traditional payment systems—in which people initiate and complete transactions one at a time—are ill-equipped for round-the-clock, high-frequency and low-latency machine-to-machine commerce. Mastercard therefore expanded on its 2025 Agent Pay offering with AP4M, allowing businesses to define agent identities, authorization rules and spending limits as the foundation for controlled autonomous commerce.

Mastercard formally launched Agent Pay for Machines (AP4M) on June 10, 2026, U.S. time. The protocol can process microtransactions of less than 1 cent across global payment networks and provide guaranteed multi-rail settlement through cards, accounts and stablecoins. More than 30 companies joined the initial rollout, including OKX, Coinbase, Stripe, Adyen and Cloudflare.

AI agents placing orders on customers’ behalf must still address identity, authorization and liability for disputes, making payment networks pivotal to the adoption of agentic commerce. Mastercard is using Agent Pay and tokenized credentials to retain its position at the transaction gateway while expanding into non-card payments such as stablecoins and cross-border remittances.

On March 4, 2026, Mastercard completed Malaysia’s first verified real-world AI agent transaction with CIMB and RHB, with an agent booking an airport transfer through hoppa. It launched the Crypto Partner Program on March 11 with an initial group of more than 85 companies, then announced on March 17 that it would acquire stablecoin platform BVNK for up to $1.8 billion.

Visa and Mastercard, whose businesses have long centered on card transactions and fees, are extending Agentic AI into corporate operations and payment back offices. Visa is targeting dispute handling, while Mastercard is serving small and medium-sized businesses that lack full management teams. The initiatives reflect the card networks' shift toward becoming technology service providers.

On March 10, 2026, Mastercard launched Virtual C-Suite, beginning with a virtual CFO that analyzes cash flow and risk. Visa and ServiceNow are advancing a dispute-management system that routes and prioritizes cases and organizes documents. Issuers write off an average of $3.3 million annually and spend more than 360 hours preparing for audits, while Mastercard estimates that each case costs $9.08–$10.32.

Agentic AI payments allow AI systems, with consumers’ authorization, to search for options, make selections and complete payments on their behalf. The key challenges are authenticating the agent’s identity, protecting card data and preserving user control. Mastercard launched Agent Pay in the United States in 2025 and expanded it to Asia-Pacific in 2026. Its collaboration with DBS Bank (Taiwan) marks the formal entry of AI-powered commerce into real-world transactions in Taiwan.

On March 26, 2026, Mastercard and DBS Bank (Taiwan) announced that they had completed Taiwan’s first authenticated agentic AI transaction. The transaction amount was not disclosed. A consumer entered the pickup and drop-off locations, time and number of passengers for an airport transfer into an AI chat interface. After matching available options, the AI booked and paid for the consumer’s selection with authorization using a linked Mastercard, while a Mastercard Agentic Token authenticated the agent’s identity.

Agentic commerce allows AI agents, with consumers’ authorization, to search for products, place orders and make payments. Visa and Banco Santander integrated Visa Intelligent Commerce (VIC) with existing payment infrastructure to test consent capture, data security and interoperability across merchants and payment networks. A Visa survey found that more than 70% of Latin American consumers already use AI during the shopping process, making transaction controls and consumer protection critical to scaling the technology.

Visa and Banco Santander announced on March 12, 2026, that they had completed Latin America’s first end-to-end AI agent payment pilots across five markets: Argentina, Brazil, Chile, Mexico and Uruguay. An AI agent bought chocolate in Brazil and books in the other four countries, completing the payments within existing regulatory and authorization parameters. The companies did not disclose transaction values or the number of participants.