Arbitrum
Arbitrum failover support is available for customers on the Growth or Custom plans. Arbitrum failover support is available on Mainnet only.
Arbitrum is an Ethereum scaling solution that provides high throughput and low-cost smart contract execution. Arbitrum's design allows it to be fully compatible with Ethereum. Building on Arbitrum is almost identical to building on Ethereum.
Arbitrum is compatible with Ethereum's JSON-RPC API implementation, which allows using tools such as Infura, Hardhat, and Ethereum wallets.
- View the official Arbitrum docs for more information about building on the Arbitrum blockchain.
- View the differences between developing on Ethereum versus Arbitrum.
Select one of the following options to get started with the Arbitrum network:
Quickstart
Learn how to quickly connect to Arbitrum and make calls to the network.
JSON-RPC APIs
View the APIs available for communicating with the Arbitrum network.
Create an API key
Learn how to create and secure an API key.
Endpoints
| Network | Description | URL |
|---|---|---|
| Mainnet | JSON-RPC over HTTPS | https://arbitrum-mainnet.infura.io/v3/<YOUR-API-KEY> Copied |
| Mainnet | JSON-RPC over WebSocket | wss://arbitrum-mainnet.infura.io/ws/v3/<YOUR-API-KEY> Copied |
| Testnet (Sepolia) | JSON-RPC over HTTPS | https://arbitrum-sepolia.infura.io/v3/<YOUR-API-KEY> Copied |
| Testnet (Sepolia) | JSON-RPC over WebSocket | wss://arbitrum-sepolia.infura.io/ws/v3/<YOUR-API-KEY> Copied |