Use CreateUserPoolClient with an AWS SDK or CLI

To create a user pool client

The following create-user-pool-client example creates a new user pool client with a client secret, explicit read and write attributes, sign in with username-password and SRP flows, sign-in with three IdPs, access to a subset of OAuth scopes, PinPoint analytics, and an extended authentication session validity.

aws cognito-idp create-user-pool-client \
    --user-pool-id us-west-2_EXAMPLE \
    --client-name MyTestClient \
    --generate-secret \
    --refresh-token-validity 10 \
    --access-token-validity 60 \
    --id-token-validity 60 \
    --token-validity-units AccessToken=minutes,IdToken=minutes,RefreshToken=days \
    --read-attributes email phone_number email_verified phone_number_verified \
    --write-attributes email phone_number \
    --explicit-auth-flows ALLOW_USER_PASSWORD_AUTH ALLOW_USER_SRP_AUTH ALLOW_REFRESH_TOKEN_AUTH \
    --supported-identity-providers Google Facebook MyOIDC \
    --callback-urls https://www.amazon.com https://example.com http://localhost:8001 myapp://example \
    --allowed-o-auth-flows code implicit \
    --allowed-o-auth-scopes openid profile aws.cognito.signin.user.admin solar-system-data/asteroids.add \
    --allowed-o-auth-flows-user-pool-client \
    --analytics-configuration ApplicationArn=arn:aws:mobiletargeting:us-west-2:767671399759:apps/thisisanexamplepinpointapplicationid,UserDataShared=TRUE \
    --prevent-user-existence-errors ENABLED \
    --enable-token-revocation \
    --enable-propagate-additional-user-context-data \
    --auth-session-validity 4

Output:

{
    "UserPoolClient": {
        "UserPoolId": "us-west-2_EXAMPLE",
        "ClientName": "MyTestClient",
        "ClientId": "123abc456defEXAMPLE",
        "ClientSecret": "this1234is5678my91011example1213client1415secret",
        "LastModifiedDate": 1726788459.464,
        "CreationDate": 1726788459.464,
        "RefreshTokenValidity": 10,
        "AccessTokenValidity": 60,
        "IdTokenValidity": 60,
        "TokenValidityUnits": {
            "AccessToken": "minutes",
            "IdToken": "minutes",
            "RefreshToken": "days"
        },
        "ReadAttributes": [
            "email_verified",
            "phone_number_verified",
            "phone_number",
            "email"
        ],
        "WriteAttributes": [
            "phone_number",
            "email"
        ],
        "ExplicitAuthFlows": [
            "ALLOW_USER_PASSWORD_AUTH",
            "ALLOW_USER_SRP_AUTH",
            "ALLOW_REFRESH_TOKEN_AUTH"
        ],
        "SupportedIdentityProviders": [
            "Google",
            "MyOIDC",
            "Facebook"
        ],
        "CallbackURLs": [
            "https://example.com",
            "https://www.amazon.com",
            "myapp://example",
            "http://localhost:8001"
        ],
        "AllowedOAuthFlows": [
            "implicit",
            "code"
        ],
        "AllowedOAuthScopes": [
            "aws.cognito.signin.user.admin",
            "openid",
            "profile",
            "solar-system-data/asteroids.add"
        ],
        "AllowedOAuthFlowsUserPoolClient": true,
        "AnalyticsConfiguration": {
            "ApplicationArn": "arn:aws:mobiletargeting:us-west-2:123456789012:apps/thisisanexamplepinpointapplicationid",
            "RoleArn": "arn:aws:iam::123456789012:role/aws-service-role/cognito-idp.amazonaws.com/AWSServiceRoleForAmazonCognitoIdp",
            "UserDataShared": true
        },
        "PreventUserExistenceErrors": "ENABLED",
        "EnableTokenRevocation": true,
        "EnablePropagateAdditionalUserContextData": true,
        "AuthSessionValidity": 4
    }
}

For more information, see Application-specific settings with app clients in the Amazon Cognito Developer Guide.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentityprovider.CognitoIdentityProviderClient;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CreateUserPoolClientRequest;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CreateUserPoolClientResponse;

/**
 * A user pool client app is an application that authenticates with Amazon
 * Cognito user pools.
 * When you create a user pool, you can configure app clients that allow mobile
 * or web applications
 * to call API operations to authenticate users, manage user attributes and
 * profiles,
 * and implement sign-up and sign-in flows.
 *
 * 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 CreateUserPoolClient {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <clientName> <userPoolId>\s

                Where:
                    clientName - The name for the user pool client to create.
                    userPoolId - The ID for the user pool.
                """;

        if (args.length != 2) {
            System.out.println(usage);
            System.exit(1);
        }

        String clientName = args[0];
        String userPoolId = args[1];
        CognitoIdentityProviderClient cognitoClient = CognitoIdentityProviderClient.builder()
                .region(Region.US_EAST_1)
                .build();

        createPoolClient(cognitoClient, clientName, userPoolId);
        cognitoClient.close();
    }

    public static void createPoolClient(CognitoIdentityProviderClient cognitoClient, String clientName,
            String userPoolId) {
        try {
            CreateUserPoolClientRequest request = CreateUserPoolClientRequest.builder()
                    .clientName(clientName)
                    .userPoolId(userPoolId)
                    .build();

            CreateUserPoolClientResponse response = cognitoClient.createUserPoolClient(request);
            System.out.println("User pool " + response.userPoolClient().clientName() + " created. ID: "
                    + response.userPoolClient().clientId());

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