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SDK Introduction

1.1 - Installation

For the browser:

Download the library source, open the dist/ folder and put nem-sdk.js into your project.

Library include the require() function so you can require() the module directly

<script src="nem-sdk.js"></script>
  // Include the library
  var nem = require("nem-sdk").default;

For Node:

Using npm:

npm install nem-sdk

// Use require
var nem = require("nem-sdk").default;
// ES6
import nem from 'nem-sdk';
Using build/ folder:
// Use the build/ folder
var nem = require("path/to/build/index.js").default;

1.2 - Build

Install dependencies:

npm install


npm run build

Build for the browser (after above build):

npm run browserify

1.3 - Organisation

The SDK is organised in namespaces and sub-namespaces.

There is 4 main namespaces:

  • requests: Requests to NIS and the outside world
  • websockets: Connection, subscription and requests to NIS websockets


  • keyPair: Functions to create keypair from hex and sign data with it
  • helpers: Miscellaneous cryptographic functions, like encrypt private key, decrypt a wallet, derive a password…
  • nacl: External cryptographic library modified for NEM
  • js: Access to the crypto-js library


  • address: Functions regarding NEM addresses like base32 encoding / decoding, verify, convert public key to address…
  • objects: Contains usesul objects models
  • fees: Contains all the transaction fees and calculation functions
  • network: Contains networks types and functions related
  • nodes: Contains array of nodes for different networks, default nodes, search by hash nodes…
  • sinks: Contains the sink addresses for namespaces and mosaics by network
  • transactions: Contains functions to prepare and send transaction objects
  • transactionTypes: Contains all the NEM transactions types
  • wallet: Contains functions to create wallets


  • convert: Contains convertion functions
  • helpers: Contains miscellaneous helper functions
  • format: Contains miscellaneous formatting functions
  • nty: Contains functions to build nty data
  • Serialization: Contains functions to serialize transactions

Consult the code directly for details, almost all functions are commented, with parameters, return values and types.