Wormhole NextJS Agent Integration

This documentation provides a comprehensive guide to building a NextJS application that leverages the Solana Agent Kit to create a Wormhole agent for cross-chain operations. This integration enables a chat-based interface for interacting with Wormhole’s cross-chain messaging protocol.

Features Overview

Interactive Chat Interface for natural language interaction
Cross-Chain Token Transfers between supported blockchains
CCTP Transfers for USDC between compatible chains
Real-Time Transaction Tracking with visual feedback
Transaction History for reviewing past operations
Responsive Design with dark mode support
Debug Panel showing agent operations in real-time

Setup Guide

Prerequisites

Node.js (v18 or later recommended)
npm, yarn, pnpm, or bun
Solana wallet with private key
API keys for supported blockchains

Installation

Clone the repository or create a new NextJS application:

# Create a new NextJS app
npx create-next-app wormhole-agent
cd wormhole-agent

# OR clone existing repository
git clone https://github.com/your-repo/wormhole-nextjs-agent.git
cd wormhole-nextjs-agent

Install dependencies:

npm install @sendaifun/solana-agent-kit @wormhole-foundation/sdk react react-dom next typescript

Configure environment variables:

# Copy example environment file
cp .example.env .env.local

# Edit .env.local with your credentials

Start the development server:

npm run dev

Project Structure

wormhole-nextjs-agent/
├── app/
│   ├── api/
│   │   └── chat/
│   │       └── route.ts     # Chat API route
│   ├── page.tsx             # Main application page
│   └── layout.tsx           # Root layout
├── components/
│   ├── ChatInterface.tsx    # Main chat component
│   ├── ChatInput.tsx        # User input component
│   ├── MessageBubble.tsx    # Message rendering component
│   ├── TransactionStatus.tsx # Transaction status indicator
│   ├── TokenTransferUI.tsx  # Token transfer UI component
│   ├── CCTPTransferUI.tsx   # CCTP transfer UI component
│   └── LogsPanel.tsx        # Debug logs component
├── lib/
│   ├── agent.ts             # Solana Agent Kit configuration
│   ├── wormhole.ts          # Wormhole SDK integration
│   └── types.ts             # TypeScript type definitions
├── public/
│   └── assets/              # Static assets
├── styles/
│   └── globals.css          # Global styles
├── next.config.js           # Next.js configuration
├── package.json             # Project dependencies
└── tsconfig.json            # TypeScript configuration

Integration Steps

1. Configure Solana Agent Kit

// lib/agent.ts
import { SolanaAgentKit } from '@sendaifun/solana-agent-kit';

export function initializeAgent() {
  const agent = new SolanaAgentKit({
    privateKey: process.env.SOLANA_PRIVATE_KEY!,
    rpcUrl: process.env.SOLANA_RPC_URL!,
    wormholeConfig: {
      rpcUrls: {
        solana: process.env.SOLANA_RPC_URL!,
        ethereum: process.env.ETHEREUM_RPC_URL!,
        // Add other chain RPCs
      },
      privateKeys: {
        solana: process.env.SOLANA_PRIVATE_KEY!,
        ethereum: process.env.ETHEREUM_PRIVATE_KEY!,
        // Add other chain private keys
      }
    }
  });
  
  return agent;
}

2. Create API Route for Chat

// app/api/chat/route.ts
import { NextRequest, NextResponse } from 'next/server';
import { initializeAgent } from '@/lib/agent';

export async function POST(req: NextRequest) {
  try {
    const { message } = await req.json();
    const agent = initializeAgent();
    
    // Process user message with agent
    const response = await agent.processMessage(message);
    
    return NextResponse.json(response);
  } catch (error) {
    console.error('Error processing chat message:', error);
    return NextResponse.json(
      { error: 'Failed to process message' },
      { status: 500 }
    );
  }
}

3. Create Chat Interface Component

// components/ChatInterface.tsx
import { useState, useEffect, useRef } from 'react';
import MessageBubble from './MessageBubble';
import ChatInput from './ChatInput';
import LogsPanel from './LogsPanel';

export default function ChatInterface() {
  const [messages, setMessages] = useState([]);
  const [logs, setLogs] = useState([]);
  const [isLoading, setIsLoading] = useState(false);
  
  const sendMessage = async (message) => {
    setIsLoading(true);
    
    // Add user message to chat
    setMessages(prev => [...prev, { role: 'user', content: message }]);
    
    try {
      const response = await fetch('/api/chat', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ message })
      });
      
      const data = await response.json();
      
      // Add agent response to chat
      setMessages(prev => [...prev, { 
        role: 'assistant', 
        content: data.text,
        transactionData: data.transactionData // If available
      }]);
      
      // Add to logs if available
      if (data.logs) {
        setLogs(prev => [...prev, ...data.logs]);
      }
    } catch (error) {
      console.error('Error sending message:', error);
      // Add error message
      setMessages(prev => [...prev, { 
        role: 'assistant', 
        content: 'Sorry, an error occurred while processing your request.' 
      }]);
    } finally {
      setIsLoading(false);
    }
  };
  
  return (
    <div className="flex flex-col h-screen">
      <div className="flex-1 overflow-y-auto p-4">
        {messages.map((message, index) => (
          <MessageBubble key={index} message={message} />
        ))}
      </div>
      
      <ChatInput onSendMessage={sendMessage} isLoading={isLoading} />
      
      <LogsPanel logs={logs} />
    </div>
  );
}

4. Implement Message Bubble Component

// components/MessageBubble.tsx
import TokenTransferUI from './TokenTransferUI';
import CCTPTransferUI from './CCTPTransferUI';

export default function MessageBubble({ message }) {
  const { role, content, transactionData } = message;
  
  const renderContent = () => {
    // Basic text message
    if (!transactionData) {
      return <p>{content}</p>;
    }
    
    // Render special UI based on transaction type
    switch(transactionData.type) {
      case 'tokenTransfer':
        return (
          <TokenTransferUI 
            content={content}
            transaction={transactionData}
          />
        );
      case 'cctpTransfer':
        return (
          <CCTPTransferUI
            content={content}
            transaction={transactionData}
          />
        );
      case 'chainInfo':
        return (
          <div className="grid grid-cols-2 md:grid-cols-3 gap-4">
            {transactionData.chains.map(chain => (
              <div key={chain.id} className="border rounded p-2">
                <h3 className="font-bold">{chain.name}</h3>
                <p className="text-sm">{chain.network}</p>
              </div>
            ))}
          </div>
        );
      default:
        return <p>{content}</p>;
    }
  };
  
  return (
    <div className={`mb-4 ${role === 'user' ? 'text-right' : 'text-left'}`}>
      <div
        className={`inline-block max-w-[85%] rounded-lg p-4 
          ${role === 'user' 
            ? 'bg-blue-500 text-white' 
            : 'bg-gray-200 dark:bg-gray-700 dark:text-white'
          }`
        }
      >
        {renderContent()}
      </div>
    </div>
  );
}

Cross-Chain Operations

Token Transfers

// lib/wormhole.ts
import { SolanaAgentKit } from '@sendaifun/solana-agent-kit';

export async function performTokenTransfer(
  agent: SolanaAgentKit, 
  sourceChain: string,
  destinationChain: string,
  token: string,
  amount: string
) {
  // Perform the token transfer using the agent
  const result = await agent.wormholeTransferToken({
    sourceChain,
    destinationChain,
    token,
    amount
  });
  
  return {
    type: 'tokenTransfer',
    sourceTxId: result.sourceTxId,
    destinationTxId: result.destinationTxId,
    token,
    amount,
    sourceChain,
    destinationChain,
    status: result.status
  };
}

CCTP Transfers

// lib/wormhole.ts
export async function performCCTPTransfer(
  agent: SolanaAgentKit, 
  sourceChain: string,
  destinationChain: string,
  amount: string
) {
  // Perform CCTP transfer for USDC
  const result = await agent.wormholeTransferCCTP({
    sourceChain,
    destinationChain,
    amount
  });
  
  return {
    type: 'cctpTransfer',
    sourceTxId: result.sourceTxId,
    destinationTxId: result.destinationTxId,
    amount,
    sourceChain,
    destinationChain,
    status: result.status
  };
}

UI Components

Token Transfer UI

// components/TokenTransferUI.tsx
export default function TokenTransferUI({ content, transaction }) {
  const {
    sourceChain,
    destinationChain,
    token,
    amount,
    sourceTxId,
    destinationTxId,
    status
  } = transaction;
  
  return (
    <div className="bg-gradient-to-r from-green-50 to-green-100 dark:from-green-900 dark:to-green-800 p-4 rounded-lg border-l-4 border-green-500">
      <h3 className="font-bold text-lg mb-2">Token Transfer</h3>
      <p className="mb-2">{content}</p>
      
      <div className="grid grid-cols-2 gap-2 mb-2">
        <div>
          <h4 className="text-xs text-gray-500 dark:text-gray-400">From</h4>
          <p className="font-medium">{sourceChain}</p>
        </div>
        <div>
          <h4 className="text-xs text-gray-500 dark:text-gray-400">To</h4>
          <p className="font-medium">{destinationChain}</p>
        </div>
        <div>
          <h4 className="text-xs text-gray-500 dark:text-gray-400">Token</h4>
          <p className="font-medium">{token}</p>
        </div>
        <div>
          <h4 className="text-xs text-gray-500 dark:text-gray-400">Amount</h4>
          <p className="font-medium">{amount}</p>
        </div>
      </div>
      
      <div className="mt-2 text-xs">
        <div className="flex items-center">
          <div className={`w-3 h-3 rounded-full mr-2 ${
            status === 'completed' ? 'bg-green-500' : 
            status === 'pending' ? 'bg-yellow-500' : 'bg-red-500'
          }`}></div>
          <span className="capitalize">{status}</span>
        </div>
        
        {sourceTxId && (
          <a 
            href={`https://solscan.io/tx/${sourceTxId}`} 
            target="_blank" 
            rel="noopener noreferrer"
            className="text-blue-500 hover:underline block mt-1"
          >
            View Source Transaction
          </a>
        )}
        
        {destinationTxId && (
          <a 
            href={`https://explorer.sui.io/txblock/${destinationTxId}`} 
            target="_blank" 
            rel="noopener noreferrer"
            className="text-blue-500 hover:underline block mt-1"
          >
            View Destination Transaction
          </a>
        )}
      </div>
    </div>
  );
}

Example Prompts

Here are some example prompts that can be handled by the Wormhole agent:

# Token Transfer Examples
- "Transfer 0.01 SOL from Solana to Ethereum"
- "Send 5 USDC from Ethereum to Base"
- "Move 1 WBTC from Polygon to Solana"

# CCTP Transfer Examples
- "Send 10 USDC from Solana to Base using CCTP"
- "Transfer 50 USDC via CCTP from Ethereum to Arbitrum"
- "Use CCTP to send 25 USDC from Avalanche to Optimism"

# Information Requests
- "What chains do you support?"
- "Show me all available networks"
- "What is Wormhole?"
- "How does CCTP work?"
- "What's the difference between token bridge and CCTP?"

Styling Guide

The application uses Tailwind CSS for styling with the following Wormhole brand color palette:

/* tailwind.config.js */
module.exports = {
  theme: {
    extend: {
      colors: {
        wormhole: {
          black: '#000000',
          white: '#FFFFFF',
          plum: '#C1BBF6',
          yellow: '#DDE95A',
          coral: '#FD8058',
        },
      },
    },
  },
}

Error Handling

// lib/agent.ts
export async function handleAgentError(error: any) {
  console.error('Agent error:', error);
  
  // Categorize errors
  if (error.message.includes('insufficient funds')) {
    return {
      status: 'error',
      message: 'Insufficient funds for this transaction. Please check your balance and try again.',
      code: 'INSUFFICIENT_FUNDS'
    };
  }
  
  if (error.message.includes('timeout')) {
    return {
      status: 'error',
      message: 'The operation timed out. This could be due to network congestion.',
      code: 'TIMEOUT'
    };
  }
  
  // Default error
  return {
    status: 'error',
    message: 'An unexpected error occurred. Please try again later.',
    code: 'UNKNOWN_ERROR'
  };
}

Testing

# Run tests
npm test

# Run tests with coverage
npm test -- --coverage

Deployment

The application can be deployed on Vercel:

Push your code to a Git repository
Connect the repository to Vercel
Configure environment variables in Vercel dashboard
Deploy the application

Best Practices

Error Handling: Implement comprehensive error handling for all blockchain operations
Rate Limiting: Add rate limiting for API endpoints to prevent abuse
Transaction Monitoring: Implement a robust transaction monitoring system
User Feedback: Provide clear feedback during long-running operations
Security: Store private keys securely and never expose them in client-side code

Getting Started

Examples

Guides

v2-beta

Features

Classes

Functions

Interfaces

Wormhole NextJS Agent Integration

Features Overview

Setup Guide

Prerequisites

Installation

Project Structure

Integration Steps

1. Configure Solana Agent Kit

2. Create API Route for Chat

3. Create Chat Interface Component

4. Implement Message Bubble Component

Cross-Chain Operations

Token Transfers

CCTP Transfers

UI Components

Token Transfer UI

Example Prompts

Styling Guide

Error Handling

Testing

Deployment

Best Practices

Resources

Getting Started

Examples

Guides

v2-beta

Features

Classes

Functions

Interfaces

​Features Overview

​Setup Guide

​Prerequisites

​Installation

​Project Structure

​Integration Steps

​1. Configure Solana Agent Kit

​2. Create API Route for Chat

​3. Create Chat Interface Component

​4. Implement Message Bubble Component

​Cross-Chain Operations

​Token Transfers

​CCTP Transfers

​UI Components

​Token Transfer UI

​Example Prompts

​Styling Guide

​Error Handling

​Testing

​Deployment

​Best Practices

​Resources

Features Overview

Setup Guide

Prerequisites

Installation

Project Structure

Integration Steps

1. Configure Solana Agent Kit

2. Create API Route for Chat

3. Create Chat Interface Component

4. Implement Message Bubble Component

Cross-Chain Operations

Token Transfers

CCTP Transfers

UI Components

Token Transfer UI

Example Prompts

Styling Guide

Error Handling

Testing

Deployment

Best Practices

Resources