az search --help Manage Azure Search services, admin keys and query keys.

[addaxnasom]

Group
    az search : Manage Azure Search services, admin keys and query keys.
        This command group is in preview. It may be changed/removed in a future release.
Subgroups:
    admin-key : Manage Azure Search admin keys.
    query-key : Manage Azure Search query keys.
    service   : Manage Azure Search services.