Use DescribeEndpoint with an AWS SDK or CLI

    /// <summary>
    /// Gets the AWS IoT endpoint URL.
    /// </summary>
    /// <returns>The endpoint URL, or null if retrieval failed.</returns>
    public async Task<string?> DescribeEndpointAsync()
    {
        try
        {
            var request = new DescribeEndpointRequest
            {
                EndpointType = "iot:Data-ATS"
            };

            var response = await _amazonIoT.DescribeEndpointAsync(request);
            _logger.LogInformation($"Retrieved endpoint: {response.EndpointAddress}");
            return response.EndpointAddress;
        }
        catch (Amazon.IoT.Model.ThrottlingException ex)
        {
            _logger.LogWarning($"Request throttled, please try again later: {ex.Message}");
            return null;
        }
        catch (Exception ex)
        {
            _logger.LogError($"Couldn't describe endpoint. Here's why: {ex.Message}");
            return null;
        }
    }

//! Describe the endpoint specific to the AWS account making the call.
/*!
  \param endpointResult: String to receive the endpoint result.
  \param clientConfiguration: AWS client configuration.
  \return bool: Function succeeded.
 */
bool AwsDoc::IoT::describeEndpoint(Aws::String &endpointResult,
                                   const Aws::Client::ClientConfiguration &clientConfiguration) {
    Aws::String endpoint;
    Aws::IoT::IoTClient iotClient(clientConfiguration);
    Aws::IoT::Model::DescribeEndpointRequest describeEndpointRequest;
    describeEndpointRequest.SetEndpointType(
            "iot:Data-ATS"); // Recommended endpoint type.

    Aws::IoT::Model::DescribeEndpointOutcome outcome = iotClient.DescribeEndpoint(
            describeEndpointRequest);

    if (outcome.IsSuccess()) {
        std::cout << "Successfully described endpoint." << std::endl;
        endpointResult = outcome.GetResult().GetEndpointAddress();
    }
    else {
        std::cerr << "Error describing endpoint" << outcome.GetError().GetMessage()
                  << std::endl;
    }

    return outcome.IsSuccess();
}

Example 1: To get your current AWS endpoint

The following describe-endpoint example retrieves the default AWS endpoint to which all commands are applied.

aws iot describe-endpoint

Output:

{
    "endpointAddress": "abc123defghijk.iot.us-west-2.amazonaws.com"
}

For more information, see DescribeEndpoint in the AWS IoT Developer Guide.

Example 2: To get your ATS endpoint

The following describe-endpoint example retrieves the Amazon Trust Services (ATS) endpoint.

aws iot describe-endpoint \
    --endpoint-type iot:Data-ATS

Output:

{
    "endpointAddress": "abc123defghijk-ats.iot.us-west-2.amazonaws.com"
}

For more information, see X.509 Certificates and AWS IoT in the AWS IoT Developer Guide.

    /**
     * Describes the endpoint of the IoT service asynchronously.
     *
     * @return A CompletableFuture containing the full endpoint URL.
     *
     * This method initiates an asynchronous request to describe the endpoint of the IoT service.
     * If the request is successful, it prints and returns the full endpoint URL.
     * If an exception occurs, it prints the error message.
     */
    public String describeEndpoint() {
        CompletableFuture<DescribeEndpointResponse> future = getAsyncClient().describeEndpoint(DescribeEndpointRequest.builder().endpointType("iot:Data-ATS").build());
        final String[] result = {null};

        future.whenComplete((endpointResponse, ex) -> {
            if (endpointResponse != null) {
                String endpointUrl = endpointResponse.endpointAddress();
                String exString = getValue(endpointUrl);
                String fullEndpoint = "https://" + exString + "-ats.iot.us-east-1.amazonaws.com";

                System.out.println("Full Endpoint URL: " + fullEndpoint);
                result[0] = fullEndpoint;
            } else {
                Throwable cause = (ex instanceof CompletionException) ? ex.getCause() : ex;
                if (cause instanceof IotException) {
                    System.err.println(((IotException) cause).awsErrorDetails().errorMessage());
                } else {
                    System.err.println("Unexpected error: " + cause.getMessage());
                }
            }
        });

        future.join();
        return result[0];
    }

suspend fun describeEndpoint(): String? {
    val request = DescribeEndpointRequest {}
    IotClient.fromEnvironment { region = "us-east-1" }.use { iotClient ->
        val endpointResponse = iotClient.describeEndpoint(request)
        val endpointUrl: String? = endpointResponse.endpointAddress
        val exString: String = getValue(endpointUrl)
        val fullEndpoint = "https://$exString-ats.iot.us-east-1.amazonaws.com"
        println("Full endpoint URL: $fullEndpoint")
        return fullEndpoint
    }
}

class IoTWrapper:
    """Encapsulates AWS IoT actions."""

    def __init__(self, iot_client, iot_data_client=None):
        """
        :param iot_client: A Boto3 AWS IoT client.
        :param iot_data_client: A Boto3 AWS IoT Data Plane client.
        """
        self.iot_client = iot_client
        self.iot_data_client = iot_data_client

    @classmethod
    def from_client(cls):
        iot_client = boto3.client("iot")
        iot_data_client = boto3.client("iot-data")
        return cls(iot_client, iot_data_client)

    def describe_endpoint(self, endpoint_type="iot:Data-ATS"):
        """
        Gets the AWS IoT endpoint.

        :param endpoint_type: The endpoint type.
        :return: The endpoint.
        """
        try:
            response = self.iot_client.describe_endpoint(endpointType=endpoint_type)
            logger.info("Retrieved endpoint %s.", response["endpointAddress"])
        except ClientError as err:
            if err.response["Error"]["Code"] == "ThrottlingException":
                logger.error("Request throttled. Please try again later.")
            else:
                logger.error(
                    "Couldn't describe endpoint. Here's why: %s: %s",
                    err.response["Error"]["Code"],
                    err.response["Error"]["Message"],
                )
            raise
        else:
            return response["endpointAddress"]

async fn show_address(client: &Client, endpoint_type: &str) -> Result<(), Error> {
    let resp = client
        .describe_endpoint()
        .endpoint_type(endpoint_type)
        .send()
        .await?;

    println!("Endpoint address: {}", resp.endpoint_address.unwrap());

    println!();

    Ok(())
}