Introduction

import { solanaPaymentMiddleware } from '@cheapay/x402-express';
import { TokenMint } from '@cheapay/x402';

// Protect your API endpoint with $0.01 USDC payment
app.use(
  '/api/premium-data',
  solanaPaymentMiddleware({
    payTo: 'YourSolanaAddressHere',
    routes: {
      '/*': {
        price: '$0.01',
        network: 'solana-mainnet',
        mint: TokenMint.USDC.mainnet,
      },
    },
  })
);

// Your protected endpoint
app.get('/api/premium-data', (req, res) => {
  res.json({
    data: 'Premium content unlocked!',
    earnings: 'Every call = $0.01 in your wallet',
  });
});