WebSocket calls are not supported when using the Celo endpoints.
Celo supports a subset Ethereum JSON-RPC methods. The following methods are NOT supported with Celo:
The following methods are supported by Celo but NOT supported by Infura using a Celo endpoint:
Celo supports an additional method outside of the standard methods supported by Infura:
Infura is also compatible with the Celo ContractKit, a library of additional tools designed to integrate applications with Celo.