Dex: Explorer V2 Script

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

// 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;

// 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;

// Sort by price (lowest price for token A in terms of token B) validResults.sort((a, b) => a.price - b.price); dex explorer v2 script

// 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 , ];

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));

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: // Fetch reserve & calculate price for a

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 .

// 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;

function executeOperation(address[] calldata assets, uint256[] calldata amounts, ...) external // 1. Borrow WETH from Aave // 2. Arbitrage between DEXes // 3. Repay + keep profit if (!provider) return null

// 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)) );

| 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: