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This reference guide provides a listing of the different OP Stack 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.

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OP Mainnet

ParameterValue
Network NameOP Mainnet
Chain ID10
Currency Symbol1ETH
Explorerhttps://explorer.optimism.io
Public RPC URLhttps://mainnet.optimism.io
Sequencer URL2https://mainnet-sequencer.optimism.io
Contract AddressesRefer to the Contract Addresses page
Connect WalletClick here to connect your wallet to OP Mainnet
  1. The “currency symbol” is required by some wallets like MetaMask.
  2. The sequencer URL is write only.

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OP Sepolia

ParameterValue
Network NameOP Sepolia
Chain ID11155420
Currency Symbol1ETH
Explorerhttps://testnet-explorer.optimism.io
Public RPC URLhttps://sepolia.optimism.io
Sequencer URL2https://sepolia-sequencer.optimism.io
Contract AddressesRefer to the Contract Addresses page
Connect WalletClick here to connect your wallet to OP Sepolia
  1. The “currency symbol” is required by some wallets like MetaMask.
  2. The sequencer URL is write only.