Node.js & JavaScript SDK for Gate.io REST APIs, WebSockets & WebSocket API

Updated & performant JavaScript & Node.js SDK for the Gate.io REST APIs and WebSockets:

• Extensive integration with Gate.io REST APIs and WebSockets.
• TypeScript support (with type declarations for most API requests & responses).
• Gate.io REST APIs for Gate.io Spot, Margin, Perpetual Futures, Delivery Futures, Options & Announcements APIs.
  • Strongly typed on most requests and responses.
• Extremely robust & performant JavaScript/Node.js Gate.io SDK.
• Actively maintained with a modern, promise-driven interface.
• Support for seamless API authentication for private Gate.io REST API and WebSocket calls.
• Gate.io Spot, Margin, Perpetual Futures, Delivery Futures & Options.
  • Event driven messaging.
  • Smart websocket persistence
    • Automatically handle silent websocket disconnections through timed heartbeats, including the scheduled 24hr disconnect.
    • Automatically handle listenKey persistence and expiration/refresh.
    • Emit reconnected event when dropped connection is restored.
• Websocket API for Gate.io Spot, Margin, Perpetual Futures & Delivery Futures.
  • Automatic connectivity via existing WebsocketClient, just call sendWSAPIRequest to trigger a request.
  • Automatic authentication, just call sendWSAPIRequest with channel & parameters.
  • Choose between two interfaces for WS API communication:
    • Event-driven interface, fire & forget via sendWSAPIRequest and receive async replies via wsClient's event emitter.
    • Promise-driven interface, simply call and await sendWSAPIRequest for a REST-API-like behaviour with the WS API.
• Proxy support via axios integration.
• Active community support & collaboration in telegram: Node.js Algo Traders.

Installation

npm install --save gateio-api

Issues & Discussion

• Issues? Check the issues tab.
• Discuss & collaborate with other node devs? Join our Node.js Algo Traders engineering community on telegram.

Related projects

Check out my related JavaScript/TypeScript/Node.js projects:

• Try my REST API & WebSocket SDKs:
  • Bybit-api Node.js SDK
  • Binance Node.js SDK
  • Okx-api Node.js SDK
  • Gateio-api Node.js SDK
  • Bitget-api Node.js SDK
  • Bitmart-api Node.js SDK
• Try my misc utilities:
  • OrderBooks Node.js
  • Crypto Exchange Account State Cache
• Check out my examples:
  • awesome-crypto-examples Node.js

Documentation

Most methods accept JS objects. These can be populated using parameters specified by gateio's API documentation.

• Gate.io API Documentation
• REST Endpoint Function List
• TSDoc Documentation (autogenerated using typedoc)

Structure

This project uses typescript. Resources are stored in 2 key structures:

• src - the whole connector written in typescript
• examples - some implementation examples & demonstrations. Contributions are welcome!

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Usage

Create API credentials

• Gate.io API Key Management

REST API

To use any of Gate.io's REST APIs in JavaScript/TypeScript/Node.js, import (or require) the RestClient:

const { RestClient } = require('gateio-api');

const API_KEY = 'xxx';
const PRIVATE_KEY = 'yyy';

const client = new RestClient({
  apiKey: API_KEY,
  apiSecret: PRIVATE_KEY,
});

client
  .getSpotTicker()
  .then((result) => {
    console.log('all spot tickers result: ', result);
  })
  .catch((err) => {
    console.error('spot ticker error: ', err);
  });

client
  .getSpotOrders({
    currency_pair: 'BTC_USDT', // Specify the currency pair
    status: 'open', // Specify the status of the orders to fetch
  })
  .then((result) => {
    console.log('getSpotOrders result: ', result);
  })
  .catch((err) => {
    console.error('getSpotOrders error: ', err);
  });

See RestClient for further information, or the examples for lots of usage examples.

WebSockets

All available WebSockets can be used via a shared WebsocketClient. The WebSocket client will automatically open/track/manage connections as needed. Each unique connection (one per server URL) is tracked using a WsKey (each WsKey is a string - see WS_KEY_MAP for a list of supported values).

Any subscribe/unsubscribe events will need to include a WsKey, so the WebSocket client understands which connection the event should be routed to. See examples below or in the examples folder on GitHub.

Data events are emitted from the WebsocketClient via the update event, see example below:

const { WebsocketClient } = require('gateio-api');

const API_KEY = 'xxx';
const PRIVATE_KEY = 'yyy';

const wsConfig = {
  apiKey: API_KEY,
  apiSecret: PRIVATE_KEY,

  /*
    The following parameters are optional:
  */

  // Livenet is used by default, use this to enable testnet:
  // useTestnet: true

  // how long to wait (in ms) before deciding the connection should be terminated & reconnected
  // pongTimeout: 1000,

  // how often to check (in ms) that WS connection is still alive
  // pingInterval: 10000,

  // how long to wait before attempting to reconnect (in ms) after connection is closed
  // reconnectTimeout: 500,

  // config options sent to RestClient (used for time sync). See RestClient docs.
  // restOptions: { },

  // config for axios used for HTTP requests. E.g for proxy support
  // requestOptions: { }
};

const ws = new WebsocketClient(wsConfig);

/**
 * Subscribing to data:
 **/

const userOrders = {
  topic: 'spot.orders',
  payload: ['BTC_USDT', 'ETH_USDT', 'MATIC_USDT'],
};

const userTrades = {
  topic: 'spot.usertrades',
  payload: ['BTC_USDT', 'ETH_USDT', 'MATIC_USDT'],
};

const userPriceOrders = {
  topic: 'spot.priceorders',
  payload: ['!all'],
};

// subscribe to multiple topics at once
ws.subscribe([userOrders, userTrades, userPriceOrders], 'spotV4');

// and/or subscribe to individual topics on demand
ws.subscribe(
  {
    topic: 'spot.priceorders',
    payload: ['!all'],
  },
  'spotV4',
);

// Some topics don't need params, for those you can just subscribe with a string (or use a topic + payload object as above)
ws.subscribe('spot.balances', 'spotV4');

/**
 * Handling events:
 **/

// Listen to events coming from websockets. This is the primary data source
ws.on('update', (data) => {
  console.log('data', data);
});

// Optional: Listen to websocket connection open event (automatic after subscribing to one or more topics)
ws.on('open', ({ wsKey, event }) => {
  console.log('connection open for websocket with ID: ' + wsKey);
});

// Optional: Listen to responses to websocket queries (e.g. the reply after subscribing to a topic)
ws.on('response', (response) => {
  console.log('response', response);
});

// Optional: Listen to connection close event. Unexpected connection closes are automatically reconnected.
ws.on('close', () => {
  console.log('connection closed');
});

// Optional: listen to internal exceptions. Useful for debugging if something weird happens
ws.on('exception', (data) => {
  console.error('exception: ', data);
});

// Optional: Listen to raw error events.
ws.on('error', (err) => {
  console.error('ERR', err);
});

See WebsocketClient for further information and make sure to check the examples folder for much more detail.

Websocket API

The WebsocketClient supports this exchange's Websocket API. There are two ways to use the WS API, depending on individual preference:

• event-driven:
  • send requests via client.sendWSAPIRequest(wsKey, channel, params), fire and forget, don't use await
  • handle async replies via event handlers on client.on('exception', cb) and client.on('response', cb)
• promise-driven:
  • send requests via const result = await client.sendWSAPIRequest(wsKey, channel, params), which returns a promise
  • await each call
  • use try/catch blocks to handle promise rejections

The below example demonstrates the promise-driven approach, which behaves similar to a REST API. For more detailed examples, refer to the examples folder (e.g the ws-private-spot-wsapi.ts example).

const { WebsocketClient } = require('gateio-api');

const API_KEY = 'xxx';
const PRIVATE_KEY = 'yyy';

async function start() {
  const client = new WebsocketClient({
    apiKey: API_KEY,
    apiSecret: PRIVATE_KEY,
    // Automatically re-auth WS API, if we were auth'd before and get reconnected
    reauthWSAPIOnReconnect: true,
  });

  /**
   * Setup basic event handlers for core connectivity events.
   * Note for this approach, the `response` and `update` events are not needed (but you can use them too/instead if you prefer).
   **/

  // Successfully connected
  client.on('open', (data) => {
    console.log(new Date(), 'ws connected ', data?.wsKey);
  });

  // Something happened, attempting to reconnect
  client.on('reconnect', (data) => {
    console.log(new Date(), 'ws reconnect: ', data);
  });

  // Reconnect successful
  client.on('reconnected', (data) => {
    console.log(new Date(), 'ws reconnected: ', data);
  });

  // Connection closed. If unexpected, expect reconnect -> reconnected.
  client.on('close', (data) => {
    console.error(new Date(), 'ws close: ', data);
  });

  client.on('exception', (data) => {
    console.error(new Date(), 'ws exception: ', data);
  });

  client.on('authenticated', (data) => {
    console.error(new Date(), 'ws authenticated: ', data);
  });

  try {
    /**
     * All WebSocket API (WS API) messaging should be done via the sendWSAPIRequest method.
     */

    // The WSKey identifies which connection this request is for.
    // (e.g. "spotV4" | "perpFuturesUSDTV4" | "perpFuturesBTCV4" | "deliveryFuturesUSDTV4" | "deliveryFuturesBTCV4" | "optionsV4")
    const wsKey = 'spotV4';

    /**
     * To authenticate, send an empty request to "spot.login". The SDK will handle all the parameters.
     *
     * By default (reauthWSAPIOnReconnect: true), if we get reconnected later on (e.g. connection temporarily lost), we will try to re-authenticate the WS API automatically when the connection is restored.
     */
    console.log(new Date(), 'try authenticate');
    const loginResult = await client.sendWSAPIRequest(wsKey, 'spot.login');
    console.log(new Date(), 'authenticated!', loginResult);

    /**
     * For other channels, you should include any parameters for the request (the payload) in your call.
     *
     * Note that internal parameters such as "signature" etc are all handled automatically by the SDK. Only the core request parameters are needed.
     */
    console.log(new Date(), 'try get order status');
    const orderStatus = await client.sendWSAPIRequest(
      wsKey,
      'spot.order_status',
      {
        order_id: '600995435390',
        currency_pair: 'BTC_USDT',
      },
    );

    console.log(new Date(), 'orderStatus result!', orderStatus);
  } catch (e) {
    console.error(`WS API Error: `, e);
  }
}

start();

---

Customise Logging

Pass a custom logger which supports the log methods silly, debug, notice, info, warning and error, or override methods from the default logger as desired.

const { WebsocketClient, DefaultLogger } = require('gateio-api');

// Disable all logging on the silly level
DefaultLogger.silly = () => {};

const ws = new WebsocketClient({ key: 'xxx', secret: 'yyy' }, DefaultLogger);

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Contributions & Thanks

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• Star & share my projects.
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• Have an interesting project? Get in touch & invite me to it.
• Or buy me all the coffee:
  • ETH(ERC20): 0xA3Bda8BecaB4DCdA539Dc16F9C54a592553Be06C

For more ways to give thanks & support my efforts, visit Contributions & Thanks!

Contributions & Pull Requests

Contributions are encouraged, I will review any incoming pull requests. See the issues tab for todo items.

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