Build a Copy Trading Bot for Solana — Watch Any Wallet, Mirror Their Trades

How Copy Trading Works Copy trading monitors a target wallet and automatically mirrors their trades. When they buy a token, you buy it. When they sell, you sell. Implementation 1. Watch Wallet Transactions const { Connection } = require ( ' @solana/web3.js ' ); async function pollWallet ( walletAddress , lastSig ) { const conn = new Connection ( ' https://api.mainnet-beta.solana.com ' ); const sigs = await conn . getSignaturesForAddress ( new PublicKey ( walletAddress ), { until : lastSig , limit : 10 } ); return sigs ; } 2. Detect Token Swaps Parse each transaction to find Jupiter/Raydium swap instructions: function isSwap ( tx ) { const jupiterProgram = ' JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4 ' ; return tx . transaction . message . accountKeys . some ( key => key . toString () === jupiterProgram ); } 3. Extract Token Details From the swap instruction, extract which token was bought/sold and the amount. 4. Mirror the Trade Execute the same swap with your configured amount. Polli