
New system enables AI agents to autonomously discover, negotiate, and pay for services within human-defined spending limits.
AI-generated summary
Mastercard first announced plans for this system in June. The technology leverages the open x402 protocol to facilitate machine-based payments.
Mastercard is moving its vision of AI agents transacting on their own from concept to live demo, opening early access to a system called Agent Pay for Machines that lets autonomous software discover services, agree to terms and pay for them, all within limits a human sets.
The company first announced plans for the system in June and today unveiled the milestone at Cloudflare’s Connect conference, where Mastercard’s Jorn Lambert demonstrated a live transaction.
The pitch addresses a problem emerging as AI agents grow more capable: they are becoming “economic actors” that need to buy data from one provider, an AI model from another and computing power from a third, but today’s paid services typically demand an account, API key or billing relationship with each one, which breaks down when an agent is picking services on the fly.
Agent Pay for Machines builds on x402, the open protocol that lets online services request payment, and pairs it with Mastercard’s network. The flow hinges on authority rather than the payment itself.
A business gives an agent a task and a spending cap; when the agent hits a paid service that returns a “402 Payment Required” response, it generates a digitally signed voucher, a secure promise to pay within its approved limit, which the provider verifies before delivering the service. The interactions happen off-chain at machine speed, and providers can batch vouchers to redeem later.
In the demo, an agent for marketing agency Hype planned a protein-bar campaign on a set budget, discovering registered providers and executing a two-step plan, social media research from one vendor and campaign images via Cloudflare, across nine payments to two independent merchants with no separate accounts or invoices.
Behind the scenes, Coinbase’s developer platform supplied the wallet, the Ethereum layer-2 network Base provided on-chain settlement, and BVNK, the stablecoin firm Mastercard acquired in August, handled payment and settlement in fiat or stablecoins through Mastercard’s Global Money Platform.
The launch follows end-to-end pilots with Cloudflare, Ant International, AWS, BVNK and Coinbase, and Mastercard is releasing buyer- and seller-side APIs, a toolkit and a sandbox to developers.
AI outlook — possibilities, not facts
Mastercard will expand API access to additional enterprise partners.
Likely · Within months

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