DerivAPI

Async Websocket API for deriv-app

Code Coverage:

Requirement:

Node.js (v12.18.0 or higher is recommended)

Installation

Installing Deriv API Library

We need to install the Deriv API library if we want to connect to Deriv's websocket.

NPM

npm install @deriv/deriv-api

yarn

yarn add @deriv/deriv-api

Installing Websocket (ws) library

In order to make a websocket connection, we need the websocket (ws) library.

NPM

npm install ws

yarn

yarn add ws

Usage

Basic library

The basic library is a lighter version of the Deriv API, suitable for apps that want to directly deal with API calls.

It can either be imported as a separate module (to reduce the final bundle size) or if the DerivAPI library is already imported, can be accessed using api.basic.

const WebSocket = require('ws');
const DerivAPI = require('@deriv/deriv-api/dist/DerivAPI');

// app_id 1089 is for testing, create your own app_id and use it here.
// go to api.deriv.com to register your own app.
const connection = new WebSocket('wss://ws.derivws.com/websockets/v3?app_id=1089');
const api        = new DerivAPI({ connection });
const basic = api.basic;

basic.ping().then(console.log);

ES6 modules

Basic API

// Smaller bundle size, dealing only with the low-level library
import DerivAPIBasic from '@deriv/deriv-api/dist/DerivAPIBasic.js';
import WebSocket from 'ws';

// app_id 1089 is for testing, create your own app_id and use it here.
// go to api.deriv.com to register your own app.
const connection = new WebSocket('wss://ws.derivws.com/websockets/v3?app_id=1089');
const api        = new DerivAPIBasic({ connection });

api.ping().then(console.log);

CommonJS modules

Basic API

// Smaller bundle size, dealing only with the low-level library
const WebSocket = require('ws');
const DerivAPIBasic = require('@deriv/deriv-api/dist/DerivAPIBasic');

// app_id 1089 is for testing, create your own app_id and use it here.
// go to api.deriv.com to register your own app.
const connection = new WebSocket('wss://ws.derivws.com/websockets/v3?app_id=1089');
const api        = new DerivAPIBasic({ connection });

api.ping().then(console.log);

Using the HTML script tag

Basic API

<script src="https://unpkg.com/@deriv/deriv-api/dist/DerivAPIBasic.js"></script>
<script>
    const api = new DerivAPIBasic({ 
        endpoint: 'ws.derivws.com',
        app_id: 1089 /* 1089 is a default test app_id, replace with your own app_id */,
        lang: 'EN' 
    });
    
    api.ping().then(console.log);
</script>

Creating a WebSocket connection

There are two ways to establish a connection:

1. Use a previously opened connection:

   const connection = new WebSocket('wss://ws.derivws.com/websockets/v3?app_id=YOUR_APP_ID');
   const api        = new DerivAPI({ connection });

2. Pass the arguments needed to create a connection:

   const api = new DerivAPI({ endpoint: 'ws.derivws.com', app_id: /* your app_id */, lang: 'EN' });

Documentation

Wiki

There is a short tutorial about how to use Deriv API in the wiki page.

API reference

The complete API reference is hosted here

The above reference in one page: DerivAPI reference

Development

git clone https://github.com/binary-com/deriv-api
cd deriv-api
npm install

To run the tests

npm test

Run tests automatically on source code edits

npm run devel

Run linter

npm run syntax

Run all tests (lint + js tests)

npm run test_all

Prettify the code (done automatically on commit)

npm run prettify

Generate documentations

npm run docs

Regenerate docs automatically on source code edit

Needs inotify to work.

npm run devel_docs

Serve docs on localhost and update on source code changes

npm run serve_docs

Generate html version of the docs and publish it to gh-pages

npm run gh-pages

Build the package

npm run build

Run examples

DERIV_TOKEN=YourTokenHere npm run examples