How to Add Optimism Network to MetaMask Wallet

How to Add Optimism Network to MetaMask Wallet

Optimism Network is one of the giants of Ethereum Layer 2 networks. Explore the Optimism ecosystem by adding the network to MetaMask easily with our step-by-step guide

In the burgeoning decentralized finance (DeFi) world, the Optimism Network emerges as a beacon of innovation and efficiency. As the second-largest Ethereum Layer 2 scaling solution by total value locked (TVL), Optimism offers a streamlined, cost-effective platform for users and developers alike, enhancing the Ethereum experience by significantly reducing transaction costs and increasing speed. With the DeFi ecosystem evolving at an unprecedented pace, integrating the Optimism Network with your MetaMask wallet unlocks a plethora of opportunities for seamless transactions and interactions with a wide array of dApps.


Growth in Optimism’s TVL over time | Source: L2Beat 


As of the latest updates in April 2024, Optimism has a market share of over 18% among Ethereum L2s, with a TVL of $7.65 billion. It has solidified its position within the Ethereum Layer 2 space, showcasing remarkable growth in TVL and user adoption. This surge underscores the network's commitment to accessibility and performance, setting a new standard for the DeFi community.


MetaMask, a popular web3 wallet with widespread use among over 100 million crypto enthusiasts, serves as the perfect portal to the decentralized web. Its compatibility with various blockchain networks makes it an essential tool for anyone looking to dive deep into the DeFi world. This guide is your comprehensive manual to adding the Optimism Network to your MetaMask wallet, facilitating a smoother entry into Optimism’s vibrant ecosystem.


Why Connect to Optimism Network?

The Optimism network, a Layer 2 scaling solution for Ethereum, offers several compelling advantages designed to enhance the user and developer experience on the blockchain. These advantages are pivotal in addressing the common challenges faced on the Ethereum mainnet, such as high gas fees and low transaction throughput. Here are some of the key benefits of using the Optimism network:


  • Reduced Gas Fees: One of the most significant advantages of the Optimism network is the substantial reduction in transaction fees. By handling transactions off the main Ethereum chain and leveraging optimistic rollups, Optimism dramatically lowers the cost of transactions to an average of $0.004 against Ethereum’s gas fees of over $1. This makes DeFi applications and smart contracts more accessible and affordable for a broader range of users and developers.

  • Increased Transaction Speed: Optimism enhances the scalability of Ethereum by increasing transaction throughput. It achieves faster transaction processing times of around 2,000 TPS compared to the Ethereum mainnet’s 15-20 TPS by executing transactions off-chain and periodically submitting transaction data to the OP Mainnet. This approach reduces congestion and improves the overall efficiency of transactions.

  • Ethereum Compatibility: Optimism maintains a high degree of compatibility with Ethereum, meaning developers can deploy smart contracts on Optimism with minimal changes. This EVM equivalence makes it easier for developers to migrate existing dApps or create new ones on the Optimism network, leveraging the security and decentralization of Ethereum while enjoying the benefits of Layer 2 scaling.

  • Community and Governance: Optimism strongly focuses on community and governance, with the Optimism Collective and initiatives designed to empower users and developers. The network supports a vibrant ecosystem through grants, funding for public goods, and community-driven development, fostering innovation and collaboration within the Optimism ecosystem.

  • Developer Experience: The network offers tools and resources to improve the developer experience, making it easier to build and deploy on Optimism. The Optimism gateway provides users with a user-friendly interface for interacting with Layer 2, ensuring a seamless experience for accessing dApps and managing transactions.

  • Broad Ecosystem: Optimism supports a wide range of decentralized applications (over 400 as of April 2024), including DeFi platforms, NFT marketplaces, and gaming applications. This diverse ecosystem means users can access various services and applications, driving innovation and value within the Optimism network.

Setting Up Your MetaMask Wallet for Optimism

Ensure your MetaMask wallet is ready for action. If you haven't installed MetaMask yet, head to its official website, download the version that suits your device and follow the on-screen setup instructions. MetaMask is available as a browser extension for Chrome, Firefox, Brave, Edge, and Opera. Additionally, it can be installed as an application on iOS and Android devices. Make sure to store your unique recovery phrase securely when setting up your wallet address.


Learn how to create a MetaMask wallet if you are a new user. 


Connecting Optimism Network to MetaMask: A Simple Guide

Here’s a step-by-step guide to help you connect the Optimism layer-2 network to your MetaMask wallet once it is configured and ready to use. 


Step 1: Collect Optimism Network Details


You'll need specific details about the Optimism Network, including the Network Name, RPC URL, Chain ID, Currency Symbol, and Block Explorer URL. You can find this information on the official Optimism documentation, MetaMask support, or reputable crypto information sources like Coinmarketcap.


Step 2: Configure MetaMask for Optimism


Follow these steps to configure your MetaMask wallet to connect to the Optimism network: 


  • Open MetaMask and navigate to the network selection dropdown at the top.

  • Add a New Network by choosing the Add a network manually option.

  • Enter Optimism Network Details:

  • Save and Connect: Complete the setup to add Optimism as a custom network in MetaMask. It will now appear in your network list.


Step 3: Diving Into the Optimism Ecosystem

With Optimism configured, you’re all set to explore its dynamic ecosystem. Whether you're trading tokens, providing liquidity, or engaging with innovative dApps, Optimism, and MetaMask streamline your DeFi interactions.


Note: Optimism uses ETH for gas fees. Ensure you have enough ETH funds in your MetaMask wallet before exploring the Optimism ecosystem. You can easily buy ETH on CEXs like KuCoin, or directly purchase ETH via MetaMask. Be mindful of price slippage and the level of gas fees when purchasing ETH via the MetaMask Web3 wallet.

Switching Networks in MetaMask

MetaMask simplifies network management, allowing you to switch between Optimism, Ethereum, and any other networks you've added, ensuring seamless navigation across the blockchain landscape.


Beyond MetaMask: Exploring Other Optimism Wallets

While MetaMask is a popular choice, other wallets like Coinbase Wallet, Argent, Apex, and BlockWallet also support Optimism, providing various features for a customized blockchain experience.



Integrating the Optimism Network with your MetaMask wallet opens up a world of possibilities in the DeFi space. This guide not only simplifies the connection process but also highlights the benefits of diving into Optimism’s thriving ecosystem. As the DeFi sector continues to grow, embracing solutions like Optimism ensures you're at the forefront of blockchain innovation, ready to take on the future of finance with confidence and ease.


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