az cosmosdb --help Manage Azure Cosmos DB database accounts.

[addaxnasom]

Group
    az cosmosdb : Manage Azure Cosmos DB database accounts.

Subgroups:
    cassandra      [Preview] : Manage Cassandra resources of Azure Cosmos DB account.
    collection  [Deprecated] : Manage Azure Cosmos DB collections.
    database    [Deprecated] : Manage Azure Cosmos DB databases.
    gremlin        [Preview] : Manage Gremlin resources of Azure Cosmos DB account.
    keys                     : Manage Azure Comsos DB keys.
    mongodb        [Preview] : Manage MongoDB resources of Azure Cosmos DB account.
    network-rule             : Manage Azure Comsos DB network rules.
    sql            [Preview] : Manage SQL resources of Azure Cosmos DB account.
    table          [Preview] : Manage Table resources of Azure Cosmos DB account.

Commands:
    check-name-exists        : Checks if an Azure Cosmos DB account name exists.
    create                   : Creates a new Azure Cosmos DB database account.
    delete                   : Deletes an Azure Cosmos DB database account.
    failover-priority-change : Changes the failover priority for the Azure Cosmos DB database
                               account.
    list                     : List Azure Cosmos DB database accounts.
    show                     : Get the details of an Azure Cosmos DB database account.
    update                   : Update an Azure Cosmos DB database account.