Aggregator API

REST API template wrapping multiple DEX aggregators (1inch, 0x, Paraswap, CowSwap) with your own fee layer.

Product 5 of the defi-router store. Part of the CryptoForge DeFi toolkit.

Price: $14.99 | License: MIT | Python: >=3.11 | Framework: FastAPI

Overview

A production-ready FastAPI backend that aggregates swap quotes from four major DEX aggregators, compares across providers, selects the best route by net output, and injects your protocol fee before returning the swap calldata to the caller.

Key Features

• Multi-provider aggregation — Queries 1inch, 0x, Paraswap, and CowSwap in parallel
• Smart ranking — Ranks quotes by dst_amount - (gas_estimate * gas_price) for true best output
• Protocol fee injection — Configurable BPS fee deducted from swap output, sent to your fee recipient
• Redis caching — 5-second TTL prevents redundant upstream calls during user quote browsing
• Multi-chain — Supports Ethereum, Optimism, Polygon, Arbitrum, and Base out of the box
• OpenAPI docs — Auto-generated Swagger UI at /docs
• Docker-ready — Production Dockerfile + docker-compose with Redis