Metamask: How can I download all Metamask accounts connected to my site?

Here is an article on how to retrieve all accounts from Metamask that are connected to your website using Web3 and the Chrome extension:

Connect all accounts to your website using Metamask

Metamask is a popular cryptocurrency wallet that allows users to securely store, send, and receive funds. When you connect Metamask to your website using the Chrome extension, the account information is stored locally on the user’s device. However, if you want to retrieve all accounts connected to your website programmatically, you can use Web3.js to retrieve the account information.

Step 1: Set up MetaMask and Web3.js

First, make sure that Metamask is installed on your Chrome extension. You can install it from the Chrome extensions page. After installation, create a new instance of Web3.js by configuring an Ethereum provider:

const web3 = new Web3(new Web3.providers.HttpProvider('

Replace “YOUR_PROJECT_ID” with your actual Infura project ID.

Step 2: Request Account Information

You can request account information from Metamask using the “ethereum.request()” method. This method returns an array of accounts connected to the Ethereum network:

ethereum.request({
method: 'eth_accounts',
});

This returns an empty array, indicating that there are no connected accounts.

3. Step 1: Retrieve Account Information

If you want to retrieve account information for specific accounts, use the `ethereum.query()’ method. You can pass a callback function to retrieve the account information:

ethereum.onaccountconnect((accounts) => {
console.log(accounts);
});

This logs an array of connected Ethereum accounts.

Sample Code

Here is an example code snippet showing how to retrieve all accounts associated with your website using Web3.js and the Metamask Chrome extension:

const web3 = new Web3(new Web3.providers.HttpProvider('
const accounts = [];
ethereum.request({
method: 'eth_accounts',
})
.on('accounts', (accounts) => {
console.log(accounts);
accounts.forEach((account) => {
accounts.push(account.address); // Add the account address to the array
});
});
ethereum.onaccountconnect((accounts) => {
console.log(accounts);
});

Replace “YOUR_PROJECT_ID” with your actual Infura project ID.

Note

Retrieving account data may require user permission and is essential to comply with local laws and regulations regarding user data. Additionally, if you intend to use this code in a production environment, consider implementing appropriate error handling and security measures.

If you follow these steps, you can use Web3.js and the Metamask Chrome extension to download all the accounts associated with your website.