Leveraging the HTTP 402 status code, PayChain enables instant crypto payments via standard HTTP requests without accounts, OAuth flows, or complex blockchain interactions.
Zero protocol fees
PayChain charges no fees on transactions - just pay network gas costs.
Instant settlement
Accept payments at the speed of the blockchain. Money in your wallet in 2 seconds, not T+2.
Chain Agnostic
Works with any EVM-compatible blockchain and supports multiple tokens.
Frictionless
As little as 1 line of middleware code or configuration in your existing web server stack and you can start accepting payments. Customers and agents aren't required to create an account or provide any personal information.
Security & trust via an open standard
Open-source and decentralized. No central authority controls the protocol.
HTTP-native
Uses standard HTTP headers and status codes. Integrates seamlessly with your existing web infrastructure.
PayChain enables new revenue streams, giving developers and creators an effortless way to monetize content and APIs through micro-transactions, without ads or mandatory subscriptions.
AI Agents
AI agents can autonomously pay for API access in real-time using PayChain.
Cloud Storage Providers
Enable pay-per-use storage access without requiring user accounts.
Content Creators
Enable true micropayments for digital content with instant settlement.
Just add a single line of code in your app, and you can require a USDC payment for each incoming request.
paymentMiddleware("0xYourAddress", {
"/your-endpoint": "$0.01"
});
// and thats it!If a request arrives without payment, the server responds with HTTP 402, prompting the client to pay and retry.
HTTP/1.1 402 Payment Required
// PayChain Payment RequiredPayChain lets developers accept cryptocurrency without dealing with blockchain complexity directly.