npm install gate.io

var GateIo = require('gate.io');
var gateIoClient = new GateIo('<api-key>', '<api-sceret>');

gateIoClient.getBalances(function(res) {
    console.log(res);
});

• getPairs function(callback)
• getMarketinfo function (callback)
• getMarketlist function (callback)
• getTickers function (callback)
• getTicker function (param, callback)
• orderBooks function (callback)
• orderBook function (param, callback)
• tradeHistory function (param, callback)
• getBalances function (param, callback)
• depositAddress function (currency, callback)
• depositsWithdrawals function (start, end, callback)
• buy function (currencyPair, rate, amount, callback)
• sell function (currencyPair, rate, amount, callback)
• cancelOrder function (orderNumber, currencyPair, callback)
• cancelAllOrders function (type, currencyPair, callback)
• getOrder function (orderNumber, currencyPair, callback)
• openOrders function (callback)
• myTradeHistory function (currencyPair, orderNumber, callback)
• withdraw function (currency, amount, address, callback)