Dex Explorer V2 — Script

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 .

// 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; 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));

// Sort by price (lowest price for token A in terms of token B) validResults.sort((a, b) => a.price - b.price); Unlike its predecessor (V1), which focused on basic

| Risk | Mitigation in V2 | |------|------------------| | Front-running | Use Flashbots Protect RPC or MEV-Share | | Sandwich attacks | Send transactions via private mempool (Eden, BloxRoute) | | High gas on mainnet | Deploy script on L2s (Arbitrum, Optimism, Base) | | Price impact | Split orders or use TWAP for large sizes | | Stale subgraph data | Fallback to direct on-chain reserve queries | 7. Deployment & Monitoring To run the script in production:

// 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 , ]; "Ethereum" : "BNB Chain", Price: `$$r

constructor() this.providers = new Map(); this.multicalls = new Map(); this.initProviders();

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` )));

provider.on("PairCreated", async (token0, token1, pair, log) => console.log(`New pool detected: $pair`); // Run getPoolData instantly ); Using LayerZero or Wormhole relays, V2 scripts compare prices across chains and execute atomic swaps via bridges. c. Flash Loan Integration V2 scripts integrate with Aave V3 or dYdX flash loans to execute zero-capital arbitrage:

// Arbitrage opportunity detection const lowest = validResults[0]; const highest = validResults[validResults.length - 1]; const profitPct = ((highest.price - lowest.price) / lowest.price) * 100;