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Use MetaMask SDK with Node.js

You can import MetaMask SDK into your Node.js dapp to enable your users to easily connect to the MetaMask browser extension and MetaMask Mobile. The SDK for Node.js has the same prerequisites as for standard JavaScript.

Steps​

1. Install the SDK​

In your project directory, install the SDK using Yarn or npm:

yarn add @metamask/sdk

or

npm i @metamask/sdk

2. Import the SDK​

In your project script, add the following to import the SDK:

import { MetaMaskSDK } from '@metamask/sdk';

3. Instantiate the SDK​

Instantiate the SDK using any options:

const MMSDK = new MetaMaskSDK(options);

const ethereum = MMSDK.getProvider(); // You can also access via window.ethereum

4. Use the SDK​

Use the SDK by calling any provider API methods. Always call eth_requestAccounts using ethereum.request() first, since it prompts the installation or connection popup to appear.

ethereum.request({ method: 'eth_requestAccounts', params: [] });