x402 for Blockchain and Crypto Payments: How x402 Is Powering the Future of Internet-Native Commerce
See how x402 connects HTTP requests to stablecoin payments across Solana and EVM networks—with low-cost settlement built for APIs and autonomous agents....
How x402 and MPP differ in payment flows, supported schemes and discovery. Check deployed capabilities and access requirements before choosing an integration....
Compare API keys and x402: credentials identify or authorize applications; x402 adds HTTP-native payments. Learn when to use either—or combine both....
The definitive guide to agentic payments: how AI agents pay for things, which companies are building (Mastercard, Visa, Stripe, x402), real-world use cases, and how to build agent-native payment infrastructure....
x402 adds request-level pricing to open APIs. Learn what payment can change about usage incentives—and why authentication, rate limits and abuse controls still matter....
Learn how x402 uses HTTP 402 for API payments. Covers payment requirements, signed requests, verification, settlement and links to implementation guides....
Accept x402 payments on supported networks. Check pricing and authentication requirements for your payment scheme.
Start with the quickstart guide
Quickstart guide
