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@openlibx402/express

Express.js middleware and decorators for X402 payment protocol.

Installation

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npm install @openlibx402/express

Features

  • Express middleware for payment requirements
  • Automatic payment verification
  • 402 response handling
  • TypeScript support

Usage

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import express from 'express';
import { paymentRequired } from '@openlibx402/express';

const app = express();

app.get('/premium-data', paymentRequired({
  amount: '0.10',
  paymentAddress: 'YOUR_WALLET_ADDRESS',
  tokenMint: 'USDC_MINT_ADDRESS',
  description: 'Access to premium data'
}), (req, res) => {
  res.json({ data: 'Premium content' });
});

License

MIT