Accept x402 Payments

import express from "express";
import { paymentMiddleware, x402ResourceServer } from "@x402/express";
import { ExactEvmScheme } from "@x402/evm/exact/server";
import { HTTPFacilitatorClient } from "@x402/core/server";

const app = express();
const payTo = "0xYourWalletAddress";

const facilitatorClient = new HTTPFacilitatorClient({
  url: "https://facilitator.x402.abs.xyz",
});

app.use(
  paymentMiddleware(
    {
      "GET /weather": {
        accepts: [
          {
            scheme: "exact",
            price: "$0.001",
            network: "eip155:2741",
            payTo,
          },
        ],
        description: "Weather data",
        mimeType: "application/json",
      },
    },
    new x402ResourceServer(facilitatorClient).register(
      "eip155:*",
      new ExactEvmScheme()
    ),
  ),
);

app.get("/weather", (_req, res) => {
  res.send({ weather: "sunny", temperature: 70 });
});