How to Add Arbitrum to MetaMask

Can I Add Arbitrum to MetaMask?

Yes, Arbitrum One can be added to MetaMask as a custom network. As a Layer 2 scaling solution, it lowers transaction costs while maintaining Ethereum’s security and EVM compatibility.

To connect, enter the correct RPC details and network settings. Once added, you can interact with dApps, trade assets, and use DeFi protocols with lower fees and faster transactions than Ethereum mainnet.

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How to Add Arbitrum to MetaMask

To connect Arbitrum to MetaMask, you need to manually input the network details or use ChainList, a trusted EVM network aggregator that simplifies the process.

Quick Guide to Adding Arbitrum via ChainList:

1. Open ChainList – Visit ChainList and connect your MetaMask wallet.
2. Search for Arbitrum – Type "Arbitrum One" or "Arbitrum Nova" in the search bar.
3. Select the Network – Click "Add to MetaMask" on the correct network.
4. Approve and Confirm – Follow the MetaMask prompts to complete the setup.

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Arbitrum RPC and Chain ID

To manually add Arbitrum to MetaMask without using third-party tools like ChainList, enter the following network details:

• Network Name: Arbitrum LlamaNodes
• RPC URL: https://arbitrum.llamarpc.com
• Chain ID: 42161
• Currency Symbol: ETH
• Block Explorer: https://arbiscan.io

For the most up-to-date network details, always check Arbitrum’s official documentation.

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About Arbitrum

Arbitrum is a Layer 2 scaling solution that leverages optimistic rollups to enhance Ethereum’s transaction throughput and lower gas fees while maintaining its security. It processes transactions off-chain, submitting compressed data to Ethereum with fraud-proof validation. 

Arbitrum One is its primary network, designed for general-purpose Ethereum scaling, offering full EVM compatibility and decentralized dispute resolution through interactive fraud proofs, ensuring trustless and efficient smart contract execution.

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Final Thoughts

Connecting Arbitrum to MetaMask is quick and lets you use Ethereum with lower fees and faster transactions. You can add it manually or through ChainList for convenience. 

If an RPC is not working, check official sources for the latest details. There are usually multiple RPC providers available.