The initiative was launched with the support of 30 fintech and crypto companies, including Coinbase, OKX, and Tempo. AP4M users will be able to set authorization rules and spending limits for AI agents. Mastercard noted that the system can handle large volumes of cheap, fast payments. The company emphasized that traditional payment systems are too costly for micropayments and are not designed for AI agents. To address this issue, AP4M will support transactions with cards, accounts, and stablecoins on top of Mastercard's main network.