Building a DEX Aggregator Backend: A Comprehensive Guide
Introduction
Decentralized Exchange (DEX) aggregators are essential tools in the DeFi ecosystem. They allow users to trade tokens across multiple decentralized exchanges while optimizing for the best price and lowest fees. This guide provides an overview of how to build a DEX aggregator backend using various APIs, focusing on key considerations such as chain support, API costs, and handling transaction slippage.
Key Components
To build a DEX aggregator backend, you need:
- Swap Routing API: Provides executable transaction calldata with gas estimation.
- RPC Endpoint: Used to submit transactions on supported chains.
- Token List: Contains token addresses for address resolution.
Top APIs for Building a DEX Aggregator
| Feature | Swap API | 1inch | 0x | Velora | Odos |
|---|---|---|---|---|---|
| Chains | 46 | 12 | ~10 | 8 | ~14 |
| API key required | No | Yes | Yes |
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