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Ecosystem
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Arbitrum RPC Endpoint

Guide on how to add Arbitrum to MetaMask and other wallets
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Network
Arbitrum is the leading Layer 2 ecosystem, enabling users to shape the future of Web3.

Arbitrum: RPC and Chain Settings

Add Arbitrum 1RPC to your wallet to use our free Arbitrum RPC endpoint. Follow the steps below to add the Arbitrum RPC endpoint manually to any Web3 wallet:

  1. Check that your wallet has RPC settings and configurability
  2. Navigate to add a new network
  3. Paste the network details into the relevant fields

To add Arbitrum to MetaMask instantly, click on the orange button.

Arbitrum One logo
Arbitrum
Chain ID
42161
Token
ETH
Block explorer
https://arbiscan.io
RPC URL
https://1rpc.io/arb
or
Add to MetaMask

Privacy-protected Arbitrum RPC endpoint

Fully attested on-chain RPC relay with privacy guarantees, not assumptions.
Verifiable trust
1RPC is the first and only Web3 RPC relay with infrastructure that is fully attested on-chain. Anyone can verify its integrity by assessing the relay‘s hardware and software components.
Phishing protection
Transaction sanitizers are anti-phishing toggles that defend against phishing attacks to prevent loss of user funds. These rules can be added and edited at any time on the 1RPC dashboard.
Zero-tracking privacy
What‘s private stays private. Burn after relaying wipes all metadata after request is done. True zero-tracking means we don‘t (and are unable to) store or collect your personal data.
Custom API access
Generate a unique API key that spins up RPC endpoints across $57+ chains supported on 1RPC. Customizable keys allow users to define their own permissions, providing greater control over features and access levels.

Explore RPC endpoints across Web3

1RPC supports over 57+ networks, including major chains such as Ethereum, Polygon, Base, and more.
Oasis Sapphire logo
Oasis
Chain ID
23294
Token
ROSE
Block explorer
https://explorer.sapphire.oasis.io
RPC URL
https://1rpc.io/oasis/sapphire
or
Add to MetaMask
Polygon logo
Polygon
Chain ID
137
Token
MATIC
Block explorer
https://polygonscan.com
RPC URL
https://1rpc.io/matic
or
Add to MetaMask
Cronos logo
Cronos
Chain ID
25
Token
CRO
Block explorer
https://cronoscan.com
RPC URL
https://1rpc.io/cro
or
Add to MetaMask

What is a RPC?

RPC stands for Remote Procedure Call enables interactions within a decentralized network. There are 2 components: an RPC node, which allows applications, including crypto wallets, to connect with the blockchain, and the RPC endpoint, which is a URL that acts as the gateway for accessing the functionalities of a blockchain through an RPC.

How is my wallet protected with 1RPC?

1RPC is a lightweight RPC relay that protects your blockchain interactions by eradicating metadata exposure and leakage. When connecting your wallet like MetaMask to 1RPC, personally identifiable information is decoupled from the wallet address to preserve your data privacy.

How do I add Arbitrum to my wallet?

With most crypto wallets, you can easily add a new network by navigating to the Network Settings section. Copy and add the details, including the 1RPC URL, the network Chain ID and other details. MetaMask users can add the network to the wallet with just a single click on our site.