Summary: You can add Optimism, a Layer 2 solution for Ethereum, to your MetaMask wallet for low-cost, fast, and secure EVM application operation. This can be done easily via a platform like ChainList or by manually inputting Optimism RPC details.

Continue reading below for a step-by-step breakdown on how to safely add the verified Optimism network (OP Mainnet) to your MetaMask Wallet.

Table of Contents

Can I Add Optimism to MetaMask?

Yes, you can connect Optimism, which works with Ethereum's Solidity programming language, directly to your MetaMask wallet. This lets you run applications like Lyra and Synthetix on the Optimism network, just like you do on the Ethereum mainnet. As a Layer 2 solution built for Ethereum, Optimism offers strong security, low transaction fees, and is easy for developers to use and deploy EVM applications.

How to Add Optimism to MetaMask

Adding Optimism, a Layer 2 solution for Ethereum, to your MetaMask wallet can be done effortlessly through a tool like ChainList. This platform provides an easy-to-use interface for discovering and linking up to any Web3 network that's compatible with the Ethereum Virtual Machine.

Follow these four easy steps to integrate Optimism with MetaMask:

  1. Launch the ChainList application.
  2. Use the search bar to find OP Mainnet.
  3. Look for the OP Mainnet box among the search results.
  4. Click on the 'Connect Wallet' button that's found within this box.
OP Mainnet to MetaMask
Add OP Mainnet to MetaMask.

Optimism RPC Details

For users who want to manually input the Optimism RPC details into their wallet without using ChainList, below are the confirmed RPC details for a direct connection to the mainnet.

  1. Network Name: OP Mainnet
  2. RPC URL:
  3. Chain ID: 10
  4. Currency Symbol: ETH
  5. Block Explorer URL:

What is Optimism?

Optimism is a Layer 2 solution for Ethereum, providing a high-speed, low-cost blockchain experience. As an "Optimistic Rollup", it uses Ethereum's consensus mechanism, offering a fast and scalable blockchain built for Ethereum developers. It's designed as a minimal extension to Ethereum software, enabling applications to scale seamlessly.

The Optimistic Rollup is the key concept behind Optimism. Layer 2 blocks are stored on the Ethereum blockchain, ensuring data availability and integrity. A single entity, the "sequencer", manages block production, providing transaction confirmations, state updates, and submits user transactions to Layer 1. Transactions can be submitted directly to the sequencer or via Layer 1, balancing cost efficiency and censorship resistance.

Optimism L2.

Final Thoughts

In conclusion, Optimism, as a Layer 2 solution for Ethereum, provides a secure, high-speed, and low-cost alternative for running EVM applications like Lyra and Synthetix. It operates seamlessly with Ethereum's mainnet and can be easily added to your MetaMask wallet using a tool like ChainList. By connecting Optimism to MetaMask, you can leverage the benefits of Optimistic Rollups, ensuring data availability and integrity, fast transaction confirmations, and a balance between cost efficiency and censorship resistance.