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Prerequisites

Before you begin, make sure you have the following installed on your system. This is what we will be using in this example. Node.js and npm: Download and install from nodejs.org

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Step 1: Create a new project

Head to your preferred directory and create a new project using create-next-app with TypeScript template (you can use other templates or methods to start your project too): 
npx create-next-app@latest wallet-kit-demo --typescript
cd wallet-kit-demo
npm run dev

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Step 2: Install dependency

npm i @jup-ag/wallet-adapter

Download Jupiter Wallet Extension

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Step 3: Add notification functionality

In /src/components, create a new file WalletNotification.tsx with the following content: In this example, we will use a simple browser notification system to handle the wallet connection events. 
"use client";

interface IWalletNotification {
  publicKey?: string;
  shortAddress?: string;
  walletName?: string;
  metadata?: {
    name: string;
    url: string;
    icon: string;
    supportedTransactionVersions?: any;
  };
}

// Simple notification component - you can replace this with your preferred notification library
const showNotification = (message: string, type: 'success' | 'error' | 'info' = 'info') => {
  // For demo purposes, we'll use browser notifications
  // In a real app, you'd want to use a proper notification library like react-hot-toast
  console.log(`[${type.toUpperCase()}] ${message}`);
  
  // Simple visual feedback
  if (typeof window !== 'undefined') {
    const notification = document.createElement('div');
    notification.style.cssText = `
      position: fixed;
      top: 20px;
      right: 20px;
      background: ${type === 'error' ? '#ef4444' : type === 'success' ? '#10b981' : '#3b82f6'};
      color: white;
      padding: 12px 16px;
      border-radius: 8px;
      z-index: 9999;
      font-family: system-ui, -apple-system, sans-serif;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    `;
    notification.textContent = message;
    document.body.appendChild(notification);
    
    setTimeout(() => {
      document.body.removeChild(notification);
    }, 3000);
  }
};

export const WalletNotification = {
  onConnect: ({ shortAddress, walletName }: IWalletNotification) => {
    showNotification(`Connected to ${walletName} (${shortAddress})`, 'success');
  },
  onConnecting: ({ walletName }: IWalletNotification) => {
    showNotification(`Connecting to ${walletName}...`, 'info');
  },
  onDisconnect: ({ walletName }: IWalletNotification) => {
    showNotification(`Disconnected from ${walletName}`, 'info');
  },
  onError: ({ walletName }: IWalletNotification) => {
    showNotification(`Failed to connect to ${walletName}`, 'error');
  },
  onNotInstalled: ({ walletName }: IWalletNotification) => {
    showNotification(`${walletName} is not installed`, 'error');
  },
};

export default WalletNotification;

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Step 4: Wrap your app in the Wallet Kit

In /src/app/page.tsx, wrap your app with <UnifiedWalletProvider />. This example code covers the base usage of the wallet kit which allows all wallets in your browser to be detected and used. If you have downloaded the Jupiter Wallet Extension , you should be able to see and connect to it. 
"use client";

import { Adapter, UnifiedWalletButton, UnifiedWalletProvider } from "@jup-ag/wallet-adapter";
import { WalletNotification } from "../components/WalletNotification";

export default function Home() {
  // You can add specific wallet adapters here if needed
  // For now, we'll rely on the Unified Wallet Kit's built-in wallet discovery
  const wallets: Adapter[] = [];

  return (
    <UnifiedWalletProvider
      wallets={wallets}
      config={{
        autoConnect: false,
        env: "mainnet-beta",
        metadata: {
          name: "Jupiter Wallet Kit Demo",
          description: "A demo application showcasing the Jupiter Wallet Kit",
          url: "https://localhost:3000",
          iconUrls: ["https://jup.ag/favicon.ico"],
        },
        notificationCallback: WalletNotification,
        walletlistExplanation: {
          href: "https://build.jup.ag/tool-kits/wallet-kit",
        },
        theme: "dark",
        lang: "en",
      }}
    >
      <div className="min-h-screen bg-gradient-to-br from-gray-900 to-gray-800 flex flex-col items-center justify-center p-8">
        <div className="max-w-md w-full space-y-8 text-center">
          <div>
            <h1 className="text-4xl font-bold text-white mb-4">
              Jupiter Wallet Extension Demo
            </h1>
            <p className="text-gray-300 mb-8">
              Connect your Solana wallet to get started
            </p>
          </div>
          
          <div className="bg-gray-800 p-6 rounded-lg shadow-lg">
            <UnifiedWalletButton />
          </div>
                          
          <div className="text-sm text-gray-400">
            <p>Powered by Jupiter Wallet Kit</p>
          </div>
        </div>
      </div>
    </UnifiedWalletProvider>
  );
}
There you have it! You’ve successfully integrated Jupiter Wallet Kit into your Next.js application and able to connect the Jupiter Wallet Extension!
  • Please test the wallet functionality and build into your own application.
  • If you require more customizations, check out the Wallet Kit Playground or Github repo.
  • If you have any questions or issues, please reach out to us in Discord.
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