Mastercard opened developer early access for Agent Pay for Machines (AP4M) on October 20, 2026, releasing buyer- and seller-side APIs, a sandbox and developer toolkits. In a Cloudflare Connect demonstration, marketing agency Hype tested an autonomous agent making nine payments to two merchants within a single budget, without manual billing or account setup. AP4M uses HTTP 402 payment challenges, but differs from crypto-native implementations of the x402 protocol. Its agents issue digitally signed vouchers off-chain; merchants can batch and redeem them later instead of settling every request on-chain. The pilot combined agent wallet infrastructure from Coinbase Developer Platform and BVNK, settlement on Base, and Mastercard’s multi-currency fiat and stablecoin settlement platform. Circle separately expanded its managed payments service to target AI-agent traffic using USDC. Together, the developments show competing approaches to machine-to-machine payments, with different choices about settlement, funding and who manages digital assets.

Mastercard has opened developer early access to Agent Pay for Machines, offering buyer- and seller-side APIs, software development kits and sandbox environments. The service remains in pilot, is not commercially available and has no announced date for a general production release. At Cloudflare Connect 2026, Mastercard Chief Product Officer Jorn Lambert demonstrated an AI agent running on Amazon Bedrock AgentCore making nine payments across two merchants under a single budget approved by marketing firm Hype. The agent paid for social media research from AIsa and eight image generations through Cloudflare AI Gateway without separate accounts or API keys. Built on the open x402 standard, Mastercard’s system uses off-chain, cryptographically signed vouchers that providers can redeem in batches. Coinbase Developer Platform provides wallet infrastructure, Base handles on-chain settlement, and BVNK processes fiat and stablecoin settlements through the Mastercard Global Money Platform. The early-access rollout gives developers a way to test the model, not a commercially available payment service.