x402: the internet-native payment protocol
Fast, cheap, and AI-friendly payments over HTTP
The onchain payment gateway for AI and APIs
Monetize APIs & AI models
Charge per API call, AI inference, or data access without subscriptions
No chargebacks or middlemen
Instant USDC payments with finality, no disputes
Built-in compliance & security
KYT screening from Coinbase including OFAC and illicit finance
Real-time reporting dashboards
Track revenue, balances, and transactions effortlessly.
Used by the best
How Agents & APIs use x402
Pay-per-use API models
AI services charge per inference, no subscription needed.
AI agents accessing APIs
AI tools pay per use for data, compute, or cloud services.
On-demand content
Users pay per article, video, or dataset, no subscription required.
Machine payments
IoT & autonomous systems transact automatically.
Better payments happen onchain
Building onchain is hard. We make it easy.
We're committed to helping builders create incredible products. That's why we've made it easy to access powerful APIs and SDKs from Coinbase to help solve developers' toughest problems.
Discord
Get help with your project, meet other developers, and get access to the web3 community.
Talk to an expert
Get in touch with us to discuss your integration or if you have an idea on how you would like to work with us.