--- title: "x402 vs Agent Pay for Machines | Agent Ready Checkout" description: "x402 vs Agent Pay for Machines: x402 is an open protocol anyone can implement with a facilitator such as Coinbase. Verdicts by reader type." canonical: https://agentreadycheckout.com/compare/x402-vs-agent-pay-for-machines site: "Agent Ready Checkout" last_updated: 2026-11-04 section: "Head-to-heads" --- # x402 vs Agent Pay for Machines | Agent Ready Checkout > x402 vs Agent Pay for Machines: x402 is an open protocol anyone can implement with a facilitator such as Coinbase. Verdicts by reader type. Source: https://agentreadycheckout.com/compare/x402-vs-agent-pay-for-machines Site: Agent Ready Checkout Last reviewed: 2026-11-04 Head-to-head # x402 vs Agent Pay for Machines In short x402 is an open protocol anyone can implement with a facilitator such as Coinbase (first 1,000 transactions free, then $0.001). On Stripe the matrix reads x402 live and Agent Pay for Machines announced, and the two split on 6 more columns. For a head of ecommerce engineering: Start with plain x402; AP4M adds controls when your buyers are enterprises. ## The sourced difference x402 is an open protocol anyone can implement with a facilitator such as Coinbase (first 1,000 transactions free, then $0.001). Agent Pay for Machines wraps x402 with Mastercard credentialing, spend controls and settlement, and is in Early Access with no published price. [mastercard.com](https://www.mastercard.com/global/en/news-and-trends/press/2026/october/Mastercard-Agent-Pay-for-Machines-in-action.html), read 4 Nov 2026. ## Verdicts by reader type Head of ecommerce engineering Start with plain x402; AP4M adds controls when your buyers are enterprises. Payments lead AP4M offers guaranteed settlement across rails; x402 alone settles onchain. ## Side by side | Measure | x402 | Agent Pay for Machines | | --- | --- | --- | | Kind | Protocol | Protocol | | Operator | x402 Foundation (Linux Foundation) | Mastercard | | Homepage | x402.org | ap4m.build | | Matrix cells with a stated status | 3 live, 0 pilot, 1 announced | 0 live, 1 pilot, 7 announced | | Published pricing | No pricing statement on file | No pricing statement on file | | A limit worth knowing | Does not offer chargebacks on stablecoin payments. | Is not a consumer checkout program. | | Merchant of record | Seller | Seller of the service | | Dispute rules | None | Not published | | Live surfaces | API and agent tools | None | | Cost | Network fees only | Not published | ## Column by column: where the statuses differ 7 of 27 columns read differently for x402 and Agent Pay for Machines on 4 Nov 2026. | Column | x402 | Agent Pay for Machines | | --- | --- | --- | | Stripe | live | announced | | Checkout.com | no statement found | announced | | Worldpay | no statement found | announced | | Coinbase | live | pilot | | Crossmint | live | announced | | Skyfire | no statement found | announced | | PayOS | no statement found | announced | | | | 7 differences | | | ## Read the profiles - [x402](https://agentreadycheckout.com/protocols/x402) - [Mastercard Agent Pay for Machines (AP4M)](https://agentreadycheckout.com/protocols/agent-pay-for-machines) ## Sources 1. [Watch Mastercard Agent Pay for Machines in action](https://www.mastercard.com/global/en/news-and-trends/press/2026/october/Mastercard-Agent-Pay-for-Machines-in-action.html), read 4 Nov 2026 2. [x402.org](https://www.x402.org/), read 4 Nov 2026 3. [ap4m.build/info](https://ap4m.build/info), read 4 Nov 2026 4. [Linux Foundation launches the x402 Foundation](https://www.linuxfoundation.org/press/linux-foundation-is-launching-the-x402-foundation-and-welcoming-the-contribution-of-the-x402-protocol), read 4 Nov 2026 5. [Mastercard launches Agent Pay for Machines](https://www.mastercard.com/us/en/news-and-trends/press/2026/june/mastercard-launches-agent-pay-for-machines.html), read 4 Nov 2026 Last reviewed 4 Nov 2026 ## Edition Matrix edition of 4 Nov 2026. Reviewed 4 Nov 2026, [5 sources](#sources-h). ## Method [How cells, sources and read dates are defined](https://agentreadycheckout.com/method)