Exchange API Aggregator SDK

A developer SDK that provides a single unified interface to interact with 25+ cryptocurrency exchanges — both centralised and decentralised. Stop writing exchange-specific code and use one API for everything.

What's Included — Full Source Code:

• Complete TypeScript SDK with full type definitions
• 15 CEX connectors + 10 DEX connectors
• Comprehensive test suite
• Documentation site
• NPM-ready package structure

Core Features:

• Unified order API — place market, limit, stop-loss, and take-profit orders with the same function signature across all exchanges
• Normalised order books — real-time L2 order book data in a consistent format from any exchange
• WebSocket manager — single connection manager for real-time price feeds, order updates, and balance changes across all exchanges
• Portfolio aggregation — fetch balances, positions, and P&L across all connected exchanges in one call
• Rate limit handling — automatic request queuing, retry logic, and per-exchange rate limit compliance
• Error normalisation — consistent error types regardless of exchange (InsufficientBalance, OrderNotFound, etc.)

Supported Exchanges:

• CEX: Binance, Coinbase, Kraken, OKX, Bybit, Gate.io, KuCoin, Bitget, MEXC, HTX, Bitfinex, Gemini, Crypto.com, Phemex, dYdX
• DEX: Uniswap V2/V3, SushiSwap, PancakeSwap, Curve, Raydium, Orca, Jupiter, 1inch, Paraswap, 0x

Developer Experience:

• Full TypeScript types for every exchange response
• Async/await with proper error handling
• Event emitter for WebSocket data
• Configurable logging levels
• Comprehensive JSDoc documentation
• 200+ unit and integration tests

Tech Stack:

• TypeScript
• WebSocket (ws) for real-time feeds
• Axios for REST calls
• ethers.js + @solana/web3.js for DEX
• Jest test suite
• TypeDoc documentation

Ship trading bots faster. Stop fighting with exchange APIs.