How to add the Optimism mainnet to MetaMask.

Adding Optimism's mainnet to MetaMask empowers users with access to dApps built on Optimism's efficient and cost-effective platform.

Nov 22, 2024 at 11:45 am

How to Add the Optimism Mainnet to MetaMask

MetaMask is a popular and reliable crypto wallet that supports a wide range of blockchains, including Optimism. Adding Optimism's mainnet to MetaMask allows you to interact with decentralized applications (dApps) built on the Optimism network. This guide will provide a step-by-step explanation of how to add the Optimism mainnet to your MetaMask wallet.

Step 1: Install MetaMask

If you don't already have MetaMask installed, visit the official MetaMask website and download the extension for your browser. MetaMask is available for Chrome, Firefox, Brave, and Microsoft Edge.

Step 2: Create a MetaMask Wallet

Once the extension is installed, click on the MetaMask icon in your browser's toolbar and follow the prompts to create a new crypto wallet. If you already have a MetaMask wallet, you can skip this step.

Step 3: Access the MetaMask Settings

Once you have created a MetaMask wallet, click on the MetaMask icon in your browser's toolbar and navigate to the "Settings" menu.

Step 4: Add a Custom Network

In the "Settings" menu, scroll down to the "Networks" section and click on the "Add Network" button.

Step 5: Enter Optimism Mainnet Details

In the "Add Network" form, enter the following details for the Optimism mainnet:

• Network Name: Optimism Mainnet
• New RPC URL: https://mainnet.optimism.io
• Chain ID: 10
• Currency Symbol: ETH
• Block Explorer URL: https://optimistic.etherscan.io

Step 6: Save the Network

Once you have entered all the required details, click on the "Save" button to add the Optimism mainnet to your MetaMask wallet.

Step 7: Switch to Optimism Mainnet

After saving the custom network, you can switch to the Optimism mainnet by clicking on the network name in the MetaMask toolbar. The network indicator should now display "Optimism Mainnet."

Additional Tips

• Make sure you have some ETH in your MetaMask wallet before switching to the Optimism mainnet. ETH is used to pay for gas fees on the Optimism network.
• You can add multiple custom networks to your MetaMask wallet, allowing you to interact with different blockchains.
• If you encounter any errors while adding the Optimism mainnet, ensure that you have entered all the details correctly and try again.

By following these steps, you can successfully add the Optimism mainnet to your MetaMask wallet. This will allow you to seamlessly interact with dApps built on the Optimism network, such as decentralized exchanges, lending platforms, and prediction markets.