🎉 We are deprecating the Optimism SDK and migrating all tutorials to use viem/op-stack. Read more →
Builders
Developer tools
Connecting
Networks and RPC endpoints

OP networks and public RPC endpoints

This reference guide provides a listing of the different OP networks and public RPC endpoints.

💡

The public RPC URLs provided below are rate limited and do not support websocket connections. If you are experiencing rate limiting issues or need websocket functionality, consider running your own node or signing up for a third-party RPC provider.

OP Mainnet

ParameterValue
Network NameOP Mainnet
Chain ID10
Currency Symbol1ETH
Explorerhttps://optimistic.etherscan.io (opens in a new tab)
Public RPC URLhttps://mainnet.optimism.io (opens in a new tab)
Sequencer URL2https://mainnet-sequencer.optimism.io (opens in a new tab)
Contract AddressesRefer to the Contract Addresses page
Connect WalletClick here to connect your wallet to OP Mainnet (opens in a new tab)

OP Sepolia

ParameterValue
Network NameOP Sepolia
Chain ID11155420
Currency Symbol1ETH
Explorerhttps://sepolia-optimistic.etherscan.io (opens in a new tab)
Public RPC URLhttps://sepolia.optimism.io (opens in a new tab)
Sequencer URL2https://sepolia-sequencer.optimism.io (opens in a new tab)
Contract AddressesRefer to the Contract Addresses page
Connect WalletClick here to connect your wallet to OP Sepolia (opens in a new tab)

Interop Devnet

⚠️

The Interop Devnet is a temporary public network of two OP Stack Sepolia instances that supports SuperERC20 tokens, native cross-chain messaging, and cross-chain ETH transfers. This network will be deprecated once Devnet Stable is released.

Interop Devnet 0

ParameterValue
Network NameInterop Devnet 0
Chain ID11473209
Currency Symbol1ETH
Explorerhttps://optimism-interop-devnet-0.blockscout.com (opens in a new tab)
Public RPC URLhttps://interop-devnet-0.optimism.io (opens in a new tab)
Sequencer URL2https://interop-devnet-0.optimism.io (opens in a new tab)
OptimismPortal30xb081417d0578d70eb6bee7bfa646ef8c283eb35a

Interop Devnet 1

ParameterValue
Network NameInterop Devnet 1
Chain ID21473209
Currency Symbol1ETH
Explorerhttps://optimism-interop-devnet-1.blockscout.com (opens in a new tab)
Public RPC URLhttps://interop-devnet-1.optimism.io (opens in a new tab)
Sequencer URL2https://interop-devnet-1.optimism.io (opens in a new tab)
OptimismPortal30x85894f229575681130ac2f2365917cf156f8e75a
  1. The "currency symbol" is required by some wallets like MetaMask.
  2. The sequencer URL is write only.
  3. The OptimismPortal address is used for bridging ETH from Sepolia to the respective devnet.

To get ETH on the Interop Devnets:

  1. Get Sepolia ETH from console.optimism.io/faucet (opens in a new tab)
  2. Transfer the Sepolia ETH to the OptimismPortal address of your desired devnet
  3. Wait approximately 2 minutes for the bridging process to complete
Networks and RPC endpointsBuilding