Helius MCP: AI-Powered Solana Development Documentation

// Ask your AI: "Create a transaction monitor using Helius websockets"
// The AI will generate something like this with current API patterns:

const WebSocket = require('ws');

// Create WebSocket connection
const ws = new WebSocket('wss://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY');

ws.on('open', function open() {
  console.log('WebSocket connected');
  
  // Subscribe to account changes
  const request = {
    jsonrpc: "2.0",
    id: 1,
    method: "accountSubscribe",
    params: [
      "YOUR_WALLET_ADDRESS",
      {
        encoding: "jsonParsed",
        commitment: "confirmed"
      }
    ]
  };
  
  ws.send(JSON.stringify(request));
});

ws.on('message', function incoming(data) {
  const message = JSON.parse(data.toString());
  console.log('Account update:', message);
});

// Ask: "Build an NFT portfolio tracker using Helius DAS API"
// Get working code with current method signatures:

const getNFTPortfolio = async (walletAddress: string) => {
  const response = await fetch(`https://mainnet.helius-rpc.com/?api-key=${API_KEY}`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({
      jsonrpc: '2.0',
      id: 'my-id',
      method: 'getAssetsByOwner',
      params: {
        ownerAddress: walletAddress,
        page: 1,
        limit: 1000
      },
    }),
  });
  
  const data = await response.json();
  return data.result;
};