Why x402?

x402 is the native protocol for machine-to-machine payments. It brings a standard 402 Payment Required flow to HTTP, enabling per-request payments that are fast, composable, and easy for agents to use.

Benefits (from our landing narrative)

• Built for the agent economy: AI agents can pay per call without accounts or subscriptions

• No integration friction: replaces key juggling and billing backends with a single HTTP header

• Composable infrastructure: x402-wrapped endpoints become programmable building blocks

• Future-proof standard: a simple, widely adoptable payment rail for autonomous systems

How xPay uses x402

• Every paid proxy call passes through Faremeter x402 middleware

• Payments verify before forwarding the request; successful responses trigger earnings tracking

• Marketplace and MCP layers sit on top, enabling discovery and agent-native consumption

Learn more about x402

Read the x402 official documentation