Supported networks
Use one of these endpoints as your Optimism client provider.
Replace YOUR-API-KEY with an API key from your Infura dashboard.
| Network | Transport type | URL |
|---|---|---|
| Mainnet | JSON-RPC over HTTPS | https://optimism-mainnet.infura.io/v3/YOUR-API-KEY |
| Mainnet | JSON-RPC over WebSocket | wss://optimism-mainnet.infura.io/v3/YOUR-API-KEY |
| Testnet (Sepolia) | JSON-RPC over HTTPS | https://optimism-sepolia.infura.io/v3/YOUR-API-KEY |
| Testnet (Sepolia) | JSON-RPC over WebSocket | wss://optimism-mainnet.infura.io/v3/YOUR-API-KEY |