The help RPC lists all available public RPC commands, or gets help for the specified RPC. Commands which are unavailable will not be listed, such as wallet RPCs if wallet support is disabled.
help ( "command" )
*bitcoin-cli help help
help ( "command" ) List all commands, or get help for a specified command. Arguments: 1. "command" (string, optional) The command to get help on Result: "text" (string) The help text