An Infura API key is recommended for reliable RPC access and relay connections. You can get a free API key from the [MetaMask Developer dashboard](https://developer.metamask.io/). MetaMask Connect uses the API key to generate RPC URLs for supported networks via the `getInfuraRpcUrls` helper.
- [Get started]( MetaMask Connect - Dapp Wallet Integration SDK | MetaMask developer documentation )
- [Create an API key](Create an API key | MetaMask developer documentation)