@agentpay-dev/x402-facilitator

x402 Facilitator using CKB Fiber Network as settlement layer

Why CKB Fiber for x402?

| | Coinbase x402 (Base L2) | AgentPay x402 (CKB Fiber) | |---|---|---| | Settlement Speed | ~2 seconds | milliseconds | | Transaction Cost | ~$0.0001 | ~$0 | | BTC Support | �?| �?(via Cch) | | Hold Invoice | �?| �?(trustless) |

Install

npm install @agentpay-dev/x402-facilitator @agentpay-dev/core

Usage �?Middleware (one-line paywall)

import { createX402Middleware } from '@agentpay-dev/x402-facilitator';
import { createServer } from 'node:http';

const paywall = createX402Middleware({ price: '100000000', asset: 'CKB' });

createServer(async (req, res) => {
  await paywall(req, res, () => {
    // Only reached if payment is verified
    res.writeHead(200);
    res.end(JSON.stringify({ data: 'premium content' }));
  });
}).listen(3000);

Usage �?Standalone Facilitator

FIBER_RPC_URL=http://127.0.0.1:8227 npx tsx src/index.ts

Endpoints:

• POST /verify �?Verify payment against requirements
• POST /settle �?Settle a verified payment

License

MIT