Mastercard just made its biggest bet yet on the machine economy. The company launched Agent Pay for Machines, or AP4M, on June 10, a new program designed to let AI agents conduct autonomous payment transactions through cards, accounts, and digital rails.
The partner list reads like a crypto all-star roster: Aave Labs, Coinbase, OKX, Polygon, RippleX, and the Solana Foundation are among the initial backers. Over 30 partners have signed on in total, blending blockchain-native companies with traditional financial players.
What Agent Pay for Machines actually does
The program is built around three pillars: credentialing (proving the AI agent is authorized to spend), transaction controls (setting guardrails on what it can buy and how much), and guaranteed settlement (making sure the money actually moves).
The program targets high-velocity, low-cost microtransactions. That’s the kind of payment activity that traditional card networks weren’t originally designed for: millions of tiny transactions happening continuously between machines rather than occasional large purchases by people.
