npm install x402-hono @coinbase/x402

import { Hono } from "hono";
import { paymentMiddleware, Network } from "x402-hono";

const app = new Hono();

// Configure the payment middleware
app.use(paymentMiddleware(
  "0xYourAddress",
  {
    "/protected-route": {
      price: "$0.10",
      network: "sei-testnet",
      config: {
        description: "Access to premium content",
      }
    }
  }
));

// Implement your route
app.get("/protected-route", (c) => {
  return c.json({ message: "This content is behind a paywall" });
});

serve({
  fetch: app.fetch,
  port: 3000
});

type RoutesConfig = Record<string, Price | RouteConfig>;

interface RouteConfig {
  price: Price;           // Price in USD or token amount
  network: Network;       // "sei" or "seiTestnet"
  config?: PaymentMiddlewareConfig;
}

interface PaymentMiddlewareConfig {
  description?: string;               // Description of the payment
  mimeType?: string;                  // MIME type of the resource
  maxTimeoutSeconds?: number;         // Maximum time for payment (default: 60)
  outputSchema?: Record<string, any>; // JSON schema for the response
  customPaywallHtml?: string;         // Custom HTML for the paywall
  resource?: string;                  // Resource URL (defaults to request URL)
}

import { Hono } from "hono";
import { paymentMiddleware } from "x402-hono";

const app = new Hono();

app.use(paymentMiddleware(
  "0xYourAddress",
  {
    "/api/premium": {
      price: "$0.02",
      network: "sei-testnet",
      config: {
        description: "Premium API endpoint",
        maxTimeoutSeconds: 60,
      }
    }
  }
));

app.get("/api/premium", (c) => {
  return c.json({
    message: "This is premium content",
    data: {
      timestamp: Date.now(),
      premium: true
    }
  });
});

app.get("/", (c) => {
  return c.text("Hono x402 API Server");
});

export default app;