solana wallet monitoring — track any wallet in real time with javascript

every degen trader watches wallets. the smart money wallets, the insider wallets, the wallets that always seem to buy tokens right before they pump. you can build your own wallet tracker in about 100 lines of javascript. here's how. what you need node.js (v18+) @solana/web3.js — the official solana SDK a solana RPC endpoint (helius, quicknode, or the public one for testing) npm init -y npm install @solana/web3.js connecting to solana const { Connection , PublicKey } = require ( ' @solana/web3.js ' ); // public RPC works for testing. for production use helius or quicknode const RPC = process . env . RPC_URL || ' https://api.mainnet-beta.solana.com ' ; const connection = new Connection ( RPC , ' confirmed ' ); the public RPC has rate limits. if you're tracking wallets seriously, get a paid endpoint. helius free tier gives you 10 requests/second which is plenty for a personal tracker. method 1: polling for new transactions the simplest approach. check for new transactions every few second