JSON-RPC API methods

The Arbitrum API aims to be a superset of the Ethereum JSON-RPC specification and supports all the standard Ethereum JSON-RPC-APIs. Refer to the Ethereum API documentation for more information about using the API methods.
When interacting with the API, you can expect all the usual Ethereum JSON-RPC specification fields, and some extra ones used to display information unique to Arbitrum.
WebSocket calls are not supported when using the Arbitrum endpoints.