Manual for CCXT Library

Overview

The CCXT library is a collection of available crypto exchanges or exchange classes. Each class implements the public and private API for a particular crypto exchange. All exchanges are derived from the base Exchange class and share a set of common methods.

The library structure consists of:

• Public API: Market data access
• Private API: Trading and account management
• Custom Exchange API: Exchange-specific implementations
• Base Exchange Class: Core functionality

Full public and private HTTP REST APIs for all exchanges are implemented. WebSocket implementations are available in CCXT Pro.

Key Features

• Exchanges
• Markets
• Unified API
• Error Handling
• CCXT Pro

Exchanges

Supported Exchange Markets

The CCXT library currently supports the following cryptocurrency exchanges:

View full list of supported exchanges

Instantiation

To connect to an exchange:

const ccxt = require('ccxt');
const exchange = new ccxt.binance();

Rate Limit

All exchanges enforce rate limits. The CCXT library includes a built-in rate limiter enabled by default:

exchange.enableRateLimit = true; // Enable rate limiting

Markets

Markets represent trading pairs. Each market has:

• Symbol (e.g., BTC/USD)
• Base currency
• Quote currency
• Precision settings
• Trade limits

const markets = await exchange.loadMarkets();
console.log(markets['BTC/USD']);

Unified API

The CCXT library provides a consistent interface across all exchanges:

// Fetch order book
const orderbook = await exchange.fetchOrderBook('BTC/USDT');

// Fetch ticker
const ticker = await exchange.fetchTicker('ETH/BTC');

// Create order
await exchange.createLimitBuyOrder('BTC/USDT', 1, 50000);

FAQ

How do I handle pagination?

Use the since and limit parameters:

const trades = await exchange.fetchTrades('BTC/USDT', since, 100);

What if my API call fails?

CCXT throws specific exceptions:

• NetworkError for connection issues
• ExchangeError for exchange-specific errors
• InvalidNonce for authentication issues

How do I get historical data?

const ohlcv = await exchange.fetchOHLCV('BTC/USDT', '1d', since, limit);

👉 Learn more about CCXT Pro features

👉 Advanced trading examples