Summary: The best way to add the Optimism testnet to your MetaMask wallet is through the ChainList App. Their platform aggregates all EVM mainnet and testnet information and allows users to seamlessly connect to the verified RPC and Chain IDs at the click of a button.
With ChainList users can connect to Optimism Kovan, Optimism Goerli and Optimism Bedrock to start testing or deploying applications to the OP testnet.
- ChainList lists over 100+ EVM Networks for users to easily connect.
- Trusted and safe platform run by the team at Defillama.com.
- All RPC details on ChainList are verified by the community and safe to use.
Can I Add Optimism Testnet to MetaMask?
Yes, you can add the Optimism Testnet to MetaMask. This enables you to test and experiment with smart contracts and decentralized applications without incurring high gas fees or risking real funds, thanks to the sandbox environment provided by the Optimism Testnet.
How to Add Optimism Testnet to MetaMask
The process of adding the Optimism testnet to your MetaMask wallet will vary slightly depending on which testnet you want to connect to. That said, ChainList makes it easy to connect to any of the testnets on Optimism (and all other networks) by aggregating the Chain ID and Network ID information and allowing users to quickly and easily connect.
Here is a simple step-by-step guide to getting started:
- Visit ChainList and connect your MetaMask Wallet.
- Select the 'Include Testnets' checkbox.
- Type in 'Optimism' in the search bar and find the testnet you want to connect to.
- Select 'Add to MetaMask' and the network will be added to your wallet.

How to Get Optimism Testnet Faucet Tokens
Once you have added the Optimism testnet to your MetaMask wallet, you can use faucet tokens to start testing or deploying applications. The easiest way to get faucet tokens for the Optimism testnet is directly from the Optimism ETH Faucet. All you need to do is visit the website, input your wallet address and select 'Request' to receive free Optimism faucet tokens.
What is the Optimism Testnet?
The Optimism Testnet is a testing environment for the Optimism Layer 2 scaling solution for Ethereum. There are currently 3 different testnet sanbox environments on the network that are Goerli, Kovan and Bedrock. Each testnet serves a diiferent purpose and allows developers to test out their applications before moving to the mainnet.
The Optimism Testnet provides a sandbox environment for developers and users to experiment with and test their smart contracts and DApps (decentralized applications) without incurring high gas fees or risking any real funds. It also enables users to experience the benefits of the Optimism protocol, such as faster confirmation times and lower transaction fees, in a simulated setting.
Final Thoughts
The Optimism Testnet is a valuable tool for developers and users looking to experiment with and test the Optimism Layer 2 scaling solution for Ethereum. Adding the Optimism testnet to your MetaMask wallet can be done easily through the ChainList App, which aggregates all EVM mainnet and testnet information and allows users to seamlessly connect to verified RPC and Chain IDs.