How to Build a DEX Aggregator to Find the Best Swap Rates

📊 Now LIVE: Crypto Perpetuals Report 2026 Coins: 17,401 Exchanges: 1,475 Market Cap: $2.566T 0.9% 24h Vol: $61.996B Dominance: BTC 57.2% ETH 9.38% Gas: 0.136 GWEI Login Sign up Cryptocurrencies Exchanges NFT Learn Products API Candy Portfolio Search / All Latest Airdrops Coins & Tokens Guides Wallets & Bridges API Reviews More + API How to Build a DEX Aggregator to Find the Best Swap Rates 4.4 | by Rollend Xavier | Edited by Brian Lee - Updated April 09 2026