Use VerifySoftwareToken with an AWS SDK

    /// <summary>
    /// Verify the TOTP and register for MFA.
    /// </summary>
    /// <param name="session">The name of the session.</param>
    /// <param name="code">The MFA code.</param>
    /// <returns>The status of the software token.</returns>
    public async Task<VerifySoftwareTokenResponseType> VerifySoftwareTokenAsync(string session, string code)
    {
        var tokenRequest = new VerifySoftwareTokenRequest
        {
            UserCode = code,
            Session = session,
        };

        var verifyResponse = await _cognitoService.VerifySoftwareTokenAsync(tokenRequest);

        return verifyResponse.Status;
    }

        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::CognitoIdentityProvider::CognitoIdentityProviderClient client(clientConfig);

        Aws::CognitoIdentityProvider::Model::VerifySoftwareTokenRequest request;
        request.SetUserCode(userCode);
        request.SetSession(session);

        Aws::CognitoIdentityProvider::Model::VerifySoftwareTokenOutcome outcome =
                client.VerifySoftwareToken(request);

        if (outcome.IsSuccess()) {
            std::cout << "Verification of the code was successful."
                      << std::endl;
            session = outcome.GetResult().GetSession();
        }
        else {
            std::cerr << "Error with CognitoIdentityProvider::VerifySoftwareToken. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            return false;
        }

    // Verify the TOTP and register for MFA.
    public static void verifyTOTP(CognitoIdentityProviderClient identityProviderClient, String session, String code) {
        try {
            VerifySoftwareTokenRequest tokenRequest = VerifySoftwareTokenRequest.builder()
                    .userCode(code)
                    .session(session)
                    .build();

            VerifySoftwareTokenResponse verifyResponse = identityProviderClient.verifySoftwareToken(tokenRequest);
            System.out.println("The status of the token is " + verifyResponse.statusAsString());

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

const verifySoftwareToken = (totp) => {
  const client = new CognitoIdentityProviderClient({});

  // The 'Session' is provided in the response to 'AssociateSoftwareToken'.
  const session = process.env.SESSION;

  if (!session) {
    throw new Error(
      "Missing a valid Session. Did you run 'admin-initiate-auth'?",
    );
  }

  const command = new VerifySoftwareTokenCommand({
    Session: session,
    UserCode: totp,
  });

  return client.send(command);
};

// Verify the TOTP and register for MFA.
suspend fun verifyTOTP(
    sessionVal: String?,
    codeVal: String?,
) {
    val tokenRequest =
        VerifySoftwareTokenRequest {
            userCode = codeVal
            session = sessionVal
        }

    CognitoIdentityProviderClient { region = "us-east-1" }.use { identityProviderClient ->
        val verifyResponse = identityProviderClient.verifySoftwareToken(tokenRequest)
        println("The status of the token is ${verifyResponse.status}")
    }
}

class CognitoIdentityProviderWrapper:
    """Encapsulates Amazon Cognito actions"""

    def __init__(self, cognito_idp_client, user_pool_id, client_id, client_secret=None):
        """
        :param cognito_idp_client: A Boto3 Amazon Cognito Identity Provider client.
        :param user_pool_id: The ID of an existing Amazon Cognito user pool.
        :param client_id: The ID of a client application registered with the user pool.
        :param client_secret: The client secret, if the client has a secret.
        """
        self.cognito_idp_client = cognito_idp_client
        self.user_pool_id = user_pool_id
        self.client_id = client_id
        self.client_secret = client_secret


    def verify_mfa(self, session, user_code):
        """
        Verify a new MFA application that is associated with a user.

        :param session: Session information returned from a previous call to initiate
                        authentication.
        :param user_code: A code generated by the associated MFA application.
        :return: Status that indicates whether the MFA application is verified.
        """
        try:
            response = self.cognito_idp_client.verify_software_token(
                Session=session, UserCode=user_code
            )
        except ClientError as err:
            logger.error(
                "Couldn't verify MFA. Here's why: %s: %s",
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise
        else:
            response.pop("ResponseMetadata", None)
            return response