In one example, a method includes receiving, by a cloud service, a register call for authorization to access one or more other cloud services, and the register call is received from a backup client agent and includes a registration code, and registering, by the cloud service, the backup client agent. The cloud services implements an authentication process that includes evaluating the registration code, and when the backup client agent is not authenticated, access by the backup client agent to one or more of the other cloud services is prevented, and when the backup client agent is authenticated, a token is transmitted to the backup client agent.