Use `SignUp` with an AWS SDK or CLI

The following code examples show how to use SignUp.

Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code examples:

.NET

AWS SDK for .NET

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.


    /// <summary>
    /// Sign up a new user.
    /// </summary>
    /// <param name="clientId">The client Id of the application.</param>
    /// <param name="userName">The username to use.</param>
    /// <param name="password">The user's password.</param>
    /// <param name="email">The email address of the user.</param>
    /// <returns>A Boolean value indicating whether the user was confirmed.</returns>
    public async Task<bool> SignUpAsync(string clientId, string userName, string password, string email)
    {
        var userAttrs = new AttributeType
        {
            Name = "email",
            Value = email,
        };

        var userAttrsList = new List<AttributeType>();

        userAttrsList.Add(userAttrs);

        var signUpRequest = new SignUpRequest
        {
            UserAttributes = userAttrsList,
            Username = userName,
            ClientId = clientId,
            Password = password
        };

        var response = await _cognitoService.SignUpAsync(signUpRequest);
        return response.HttpStatusCode == HttpStatusCode.OK;
    }

For API details, see SignUp in AWS SDK for .NET API Reference.

C++

SDK for C++

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.


        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::SignUpRequest request;
        request.AddUserAttributes(
                Aws::CognitoIdentityProvider::Model::AttributeType().WithName(
                        "email").WithValue(email));
        request.SetUsername(userName);
        request.SetPassword(password);
        request.SetClientId(clientID);
        Aws::CognitoIdentityProvider::Model::SignUpOutcome outcome =
                client.SignUp(request);

        if (outcome.IsSuccess()) {
            std::cout << "The signup request for " << userName << " was successful."
                      << std::endl;
        }
        else if (outcome.GetError().GetErrorType() ==
                 Aws::CognitoIdentityProvider::CognitoIdentityProviderErrors::USERNAME_EXISTS) {
            std::cout
                    << "The username already exists. Please enter a different username."
                    << std::endl;
            userExists = true;
        }
        else {
            std::cerr << "Error with CognitoIdentityProvider::SignUpRequest. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            return false;
        }

For API details, see SignUp in AWS SDK for C++ API Reference.

CLI

AWS CLI

To sign up a user

This example signs up jane@example.com.

Command:


aws cognito-idp sign-up --client-id 3n4b5urk1ft4fl3mg5e62d9ado --username jane@example.com --password PASSWORD --user-attributes Name="email",Value="jane@example.com" Name="name",Value="Jane"

Output:


{
  "UserConfirmed": false,
  "UserSub": "e04d60a6-45dc-441c-a40b-e25a787d4862"
}

For API details, see SignUp in AWS CLI Command Reference.

Go

SDK for Go V2

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.



type CognitoActions struct {
	CognitoClient *cognitoidentityprovider.Client
}



// SignUp signs up a user with Amazon Cognito.
func (actor CognitoActions) SignUp(ctx context.Context, clientId string, userName string, password string, userEmail string) (bool, error) {
	confirmed := false
	output, err := actor.CognitoClient.SignUp(ctx, &cognitoidentityprovider.SignUpInput{
		ClientId: aws.String(clientId),
		Password: aws.String(password),
		Username: aws.String(userName),
		UserAttributes: []types.AttributeType{
			{Name: aws.String("email"), Value: aws.String(userEmail)},
		},
	})
	if err != nil {
		var invalidPassword *types.InvalidPasswordException
		if errors.As(err, &invalidPassword) {
			log.Println(*invalidPassword.Message)
		} else {
			log.Printf("Couldn't sign up user %v. Here's why: %v\n", userName, err)
		}
	} else {
		confirmed = output.UserConfirmed
	}
	return confirmed, err
}

For API details, see SignUp in AWS SDK for Go API Reference.

Java

SDK for Java 2.x

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.


    public static void signUp(CognitoIdentityProviderClient identityProviderClient, String clientId, String userName,
            String password, String email) {
        AttributeType userAttrs = AttributeType.builder()
                .name("email")
                .value(email)
                .build();

        List<AttributeType> userAttrsList = new ArrayList<>();
        userAttrsList.add(userAttrs);
        try {
            SignUpRequest signUpRequest = SignUpRequest.builder()
                    .userAttributes(userAttrsList)
                    .username(userName)
                    .clientId(clientId)
                    .password(password)
                    .build();

            identityProviderClient.signUp(signUpRequest);
            System.out.println("User has been signed up ");

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

For API details, see SignUp in AWS SDK for Java 2.x API Reference.

JavaScript

SDK for JavaScript (v3)

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.


const signUp = ({ clientId, username, password, email }) => {
  const client = new CognitoIdentityProviderClient({});

  const command = new SignUpCommand({
    ClientId: clientId,
    Username: username,
    Password: password,
    UserAttributes: [{ Name: "email", Value: email }],
  });

  return client.send(command);
};

For API details, see SignUp in AWS SDK for JavaScript API Reference.

Kotlin

SDK for Kotlin

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.


suspend fun signUp(
    clientIdVal: String?,
    userNameVal: String?,
    passwordVal: String?,
    emailVal: String?,
) {
    val userAttrs =
        AttributeType {
            name = "email"
            value = emailVal
        }

    val userAttrsList = mutableListOf<AttributeType>()
    userAttrsList.add(userAttrs)
    val signUpRequest =
        SignUpRequest {
            userAttributes = userAttrsList
            username = userNameVal
            clientId = clientIdVal
            password = passwordVal
        }

    CognitoIdentityProviderClient { region = "us-east-1" }.use { identityProviderClient ->
        identityProviderClient.signUp(signUpRequest)
        println("User has been signed up")
    }
}

For API details, see SignUp in AWS SDK for Kotlin API reference.

Python

SDK for Python (Boto3)

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.


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 sign_up_user(self, user_name, password, user_email):
        """
        Signs up a new user with Amazon Cognito. This action prompts Amazon Cognito
        to send an email to the specified email address. The email contains a code that
        can be used to confirm the user.

        When the user already exists, the user status is checked to determine whether
        the user has been confirmed.

        :param user_name: The user name that identifies the new user.
        :param password: The password for the new user.
        :param user_email: The email address for the new user.
        :return: True when the user is already confirmed with Amazon Cognito.
                 Otherwise, false.
        """
        try:
            kwargs = {
                "ClientId": self.client_id,
                "Username": user_name,
                "Password": password,
                "UserAttributes": [{"Name": "email", "Value": user_email}],
            }
            if self.client_secret is not None:
                kwargs["SecretHash"] = self._secret_hash(user_name)
            response = self.cognito_idp_client.sign_up(**kwargs)
            confirmed = response["UserConfirmed"]
        except ClientError as err:
            if err.response["Error"]["Code"] == "UsernameExistsException":
                response = self.cognito_idp_client.admin_get_user(
                    UserPoolId=self.user_pool_id, Username=user_name
                )
                logger.warning(
                    "User %s exists and is %s.", user_name, response["UserStatus"]
                )
                confirmed = response["UserStatus"] == "CONFIRMED"
            else:
                logger.error(
                    "Couldn't sign up %s. Here's why: %s: %s",
                    user_name,
                    err.response["Error"]["Code"],
                    err.response["Error"]["Message"],
                )
                raise
        return confirmed

For API details, see SignUp in AWS SDK for Python (Boto3) API Reference.

For a complete list of AWS SDK developer guides and code examples, see Using this service with an AWS SDK. This topic also includes information about getting started and details about previous SDK versions.

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Use SignUp with an AWS SDK or CLI

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Use `SignUp` with an AWS SDK or CLI