// Sort by price (lowest price for token A in terms of token B) validResults.sort((a, b) => a.price - b.price);
const validResults = results.filter(r => r !== null); if (validResults.length === 0) console.log("❌ No pools found for this pair."); return;
This piece dissects a fully functional Dex Explorer V2 Script written in TypeScript/Node.js, leveraging ethers.js v6 and on-chain subgraph APIs. The V2 script is modular, consisting of five core engines:
// DEX endpoints (Uniswap V2 style) const DEXES = [ name: "UniswapV2", router: "0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D", chainId: 1 , name: "SushiSwap", router: "0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F", chainId: 1 , name: "PancakeSwap", router: "0x10ED43C718714eb63d5aA57B78B54704E256024E", chainId: 56 , ]; dex explorer v2 script
private initProviders() // Ethereum mainnet const ethProvider = new ethers.JsonRpcProvider(process.env.ETH_RPC_URL); this.providers.set(1, ethProvider); this.multicalls.set(1, new Multicall(ethProvider));
console.table(validResults.map(r => ( DEX: r.dex, Chain: r.chainId === 1 ? "Ethereum" : "BNB Chain", Price: `$$r.price.toFixed(4) USDC per WETH`, Liquidity: `$(Number(r.reserve0) / 1e18).toFixed(2) WETH / $(Number(r.reserve1) / 1e6).toFixed(2) USDC` )));
// Main exploration: fetch prices from all DEXes and find best route async explore() console.log( \n🔍 Dex Explorer V2 – Scanning $DEXES.length DEXes...\n ); const results = await Promise.all( DEXES.map(dex => this.getPoolData(dex, TOKEN_A, TOKEN_B)) ); // Sort by price (lowest price for token
// Fetch reserve & calculate price for a token pair on a given DEX async getPoolData(dex: typeof DEXES[0], tokenA: string, tokenB: string) try const provider = this.providers.get(dex.chainId); if (!provider) return null;
// Arbitrage opportunity detection const lowest = validResults[0]; const highest = validResults[validResults.length - 1]; const profitPct = ((highest.price - lowest.price) / lowest.price) * 100;
1. Introduction In the fast-paced world of decentralized finance (DeFi), information asymmetry is the primary source of profit. A Dex Explorer V2 Script is an advanced automation tool designed to scan, analyze, and interact with multiple decentralized exchanges (DEXs) simultaneously. Unlike its predecessor (V1), which focused on basic price fetching and routing, V2 introduces real-time mempool monitoring , multi-chain support , fuzz testing for vulnerable liquidity pools , and autonomous arbitrage execution . // Run the explorer const explorer = new
// Run the explorer const explorer = new DexExplorerV2(); explorer.explore().catch(console.error); a. Mempool Listener for New Pools V2 scripts subscribe to PairCreated events to instantly explore fresh liquidity before public bots.
if (profitPct > MIN_PROFIT_BPS / 100) console.log(`\n🚀 ARBITRAGE OPPORTUNITY: Buy on $lowest.dex @ $$lowest.price.toFixed(4) → Sell on $highest.dex @ $$highest.price.toFixed(4)`); console.log(`📈 Profit: $profitPct.toFixed(2)% before gas`); // Here you would call execution engine (Flashbots / private tx) else console.log(`\n⚡ No significant arb opportunity ($profitPct.toFixed(2)% profit).`);
// Multi-hop route optimizer (V2 feature) async findBestRoute(amountIn: string) // Uses 0x API or Uniswap Universal Router for optimal routing const response = await axios.get( https://api.0x.org/swap/v1/quote , params: sellToken: TOKEN_A, buyToken: TOKEN_B, sellAmount: amountIn, slippagePercentage: 0.01, , ); console.log("Best route via 0x:", response.data); return response.data;
// Compute pair address (CREATE2 for V2) const pairAddress = ethers.getCreate2Address( dex.router, "0x96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f", ethers.solidityPackedKeccak256(["address", "address"], [tokenA, tokenB]) ); const pairContract = new ethers.Contract( pairAddress, ["function getReserves() view returns (uint112, uint112, uint32)"], provider ); const [reserve0, reserve1] = await pairContract.getReserves(); const price = Number(reserve1) / Number(reserve0); return dex: dex.name, chainId: dex.chainId, price, reserve0, reserve1, pairAddress ; catch (error) return null;