Use DescribeAccountAttributes with an Amazon SDK or CLI

To describe account attributes

The following describe-account-attributes example retrieves the attributes for the current Amazon account.

aws rds describe-account-attributes

Output:

{
    "AccountQuotas": [
        {
            "Max": 40,
            "Used": 4,
            "AccountQuotaName": "DBInstances"
        },
        {
            "Max": 40,
            "Used": 0,
            "AccountQuotaName": "ReservedDBInstances"
        },
        {
            "Max": 100000,
            "Used": 40,
            "AccountQuotaName": "AllocatedStorage"
        },
        {
            "Max": 25,
            "Used": 0,
            "AccountQuotaName": "DBSecurityGroups"
        },
        {
            "Max": 20,
            "Used": 0,
            "AccountQuotaName": "AuthorizationsPerDBSecurityGroup"
        },
        {
            "Max": 50,
            "Used": 1,
            "AccountQuotaName": "DBParameterGroups"
        },
        {
            "Max": 100,
            "Used": 3,
            "AccountQuotaName": "ManualSnapshots"
        },
        {
            "Max": 20,
            "Used": 0,
            "AccountQuotaName": "EventSubscriptions"
        },
        {
            "Max": 50,
            "Used": 1,
            "AccountQuotaName": "DBSubnetGroups"
        },
        {
            "Max": 20,
            "Used": 1,
            "AccountQuotaName": "OptionGroups"
        },
        {
            "Max": 20,
            "Used": 6,
            "AccountQuotaName": "SubnetsPerDBSubnetGroup"
        },
        {
            "Max": 5,
            "Used": 0,
            "AccountQuotaName": "ReadReplicasPerMaster"
        },
        {
            "Max": 40,
            "Used": 1,
            "AccountQuotaName": "DBClusters"
        },
        {
            "Max": 50,
            "Used": 0,
            "AccountQuotaName": "DBClusterParameterGroups"
        },
        {
            "Max": 5,
            "Used": 0,
            "AccountQuotaName": "DBClusterRoles"
        }
    ]
}

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.rds.RdsClient;
import software.amazon.awssdk.services.rds.model.AccountQuota;
import software.amazon.awssdk.services.rds.model.RdsException;
import software.amazon.awssdk.services.rds.model.DescribeAccountAttributesResponse;
import java.util.List;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DescribeAccountAttributes {
    public static void main(String[] args) {
        Region region = Region.US_WEST_2;
        RdsClient rdsClient = RdsClient.builder()
                .region(region)
                .build();

        getAccountAttributes(rdsClient);
        rdsClient.close();
    }

    public static void getAccountAttributes(RdsClient rdsClient) {
        try {
            DescribeAccountAttributesResponse response = rdsClient.describeAccountAttributes();
            List<AccountQuota> quotasList = response.accountQuotas();
            for (AccountQuota quotas : quotasList) {
                System.out.println("Name is: " + quotas.accountQuotaName());
                System.out.println("Max value is " + quotas.max());
            }

        } catch (RdsException e) {
            System.out.println(e.getLocalizedMessage());
            System.exit(1);
        }
    }
}

suspend fun getAccountAttributes() {
    RdsClient { region = "us-west-2" }.use { rdsClient ->
        val response = rdsClient.describeAccountAttributes(DescribeAccountAttributesRequest {})
        response.accountQuotas?.forEach { quotas ->
            val response = response.accountQuotas
            println("Name is: ${quotas.accountQuotaName}")
            println("Max value is ${quotas.max}")
        }
    }
}