Open API Pricing: What x402 Adds Beyond Rate Limits
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....
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....
See how PayAI launched simple prepaid facilitator pricing: free starting credits, transparent per-settlement pricing and a portal built for automated payments....
Discover how HoloWorld leveraged PayAI to seamlessly mint 3,000 NFT passes, achieving $150K in sales with zero payment failures. Explore the innovative x402 payment solution and its impact on digital transactions....
Learn how x402 uses HTTP 402 for API payments. Covers payment requirements, signed requests, verification, settlement and links to implementation guides....
Explore how the x402 Payment Required status code is revolutionizing AI-native payments, enabling autonomous transactions, and transforming the digital economy. Discover its implications for machine-to-machine commerce....
Learn how micropayments make pay-per-request APIs possible, why fixed fees matter, and how x402 supports flexible pricing for content, data and software....
Accept x402 payments on supported networks. Check pricing and authentication requirements for your payment scheme.
Start with the quickstart guide
Quickstart guide