Tips for modifying the UserRepresentation in keycloak REST API response

Whenever we send a GET request to the following URL:

https://my-keycloak/admin/realms/test-realm/users

We receive a comprehensive list of users who are associated with the test-realm.

According to the Keycloak REST API documentation, this kind of response is categorized as "UserRepresentation" (you can find the definition in the last section of the wiki page): view response definition

However, so far, only responses containing the following attributes have been received:

export interface KeycloakUserRepresentation {
  id: string;
  createdTimestamp: number;
  username: string;
  enabled: boolean;
  totp: boolean;
  emailVerified: boolean;
  firstName: string;
  lastName: string;
  email: string;
  disableableCredentialTypes: [];
  requiredActions: string[];
  notBefore: number;
  access: {
    manageGroupMembership: boolean;
    view: boolean;
    mapRoles: boolean;
    impersonate: boolean;
    manage: boolean;
  };
}

I am now looking for a way to customize the response by adding the optional attribute clientRoles. What steps should I take to make this happen?

I have experimented by assigning role mappings and groups to various users to see if it affects the response, but there were no noticeable changes. The only action that seems to alter the response is manually including the user attribute to User. However, my goal is to display the clientRoles attribute.

Answer №1

If you're looking to retrieve the optional attributes of a UserRepresentation, the easiest way is to access the client role for a specific user using the users/{id}/role-mappings endpoint. The response will include details like this:

{
"realmMappings": [
    {
        "id": "aaff6fd4-674f-4f7b-888d-c4ebed655d52",
        "name": "default-roles-master",
        "description": "${role_default-roles}",
        "composite": true,
        "clientRole": false,
        "containerId": "master"
    }
],
"clientMappings": {
    "test_client": {
        "id": "e490adbe-3b9f-4c40-ad0f-c90847193c11",
        "client": "test_client",
        "mappings": [
            {
                "id": "c31189f4-763c-45ac-a4a0-fa12ffc02832",
                "name": "Test role",
                "composite": false,
                "clientRole": true,
                "containerId": "e490adbe-3b9f-4c40-ad0f-c90847193c11"
            }
        ]
    }
}

}

To explore further about the API and how it handles role mappings, you can refer to the documentation (22.0.4) available at:

Upon examining the API calls made via the administration console, it seems that the information retrieved aligns with what is provided in a UserRepresentation.

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