What is x402? The Internet Native Payments Standard for APIs, Data, and Agents

Agents and builders grapple with integrating micropayments for API calls, data access, and AI agents amid clunky payment gateways and high fees. As more and more AI agents enter the economy, there is an urgent need to help these agents accept and make payments for services. x402 is an HTTP-native payment protocol that enables autonomous agents and APIs to execute micropayments per request without human intervention or account setup. When an AI agent encounters a paywall or paid resource, x402 allows it to instantly settle the cost using stablecoins and continue without interruption. No account creation or human approval is needed. This article breaks down x402, the internet-native payments protocol built on HTTP 402, covering: What x402 is Why it matters Who x402 is for Payment flows Features Benefits Use cases Implementation guide What Is x402? x402 is an open, internet-native payment standard designed to enable autonomous agents and APIs to execute payments per request without human