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

Coins: 18,716 Exchanges: 1,471 Market Cap: $2.393T 4.7% 24h Vol: $118.895B Dominance: BTC 56.1% ETH 10.1% Gas: 0.031 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 September 26 2025