Create Client programmatically in Keycloak

Question

How do I create clients programmatically in keycloak using java application?

Answer 1

One way to do it is via the api :

• Get token for an account with the rights to add client to the realm

    POST https://<keycloak-url>/auth/realms/master/protocol/openid-connect/token
    Host: <keycloak-url>
    Content-Type: application/x-www-form-urlencoded
    Cache-Control: no-cache
  
    client_id=admin-cli&grant_type=password&username=<user>&password=<password>
  

• Add a new client (the request body comes from an export of an existing client)

    POST https://keycloak-url/auth/admin/realms/<realm-name>/clients
    Host: <keycloak-url>
    Content-Type: application/json
    Cache-Control: no-cache
    Authorization: Bearer <token>
  
    {
         "clientId": "test-add",
         "[...]"
     }
  

The response status should be a 201 with an header location to the new client.

Documentation can be found here : https://www.keycloak.org/docs-api/14.0/rest-api/index.html#_clients_resource

Answer 2

I did it like this,

public boolean createClient(String clientId, String realmName) throws IOException {
    try {
        Keycloak keycloakInstanceDefault = KeycloakInstance.getInstance();
        RealmResource createdRealmResource = keycloakInstanceDefault.realms().realm(realmName);
        ClientRepresentation clientRepresentation = new ClientRepresentation();
        clientRepresentation.setClientId(clientId);
        clientRepresentation.setProtocol("openid-connect");
        clientRepresentation.setSecret(clientId);
        createdRealmResource.clients().create(clientRepresentation);

    } catch (IOException e) {
        e.printStackTrace();
        return false;
    }

    return true;
}

KeycloakInstance.getInstance(); returns Keycloak Object.

Answer 3

Using curl

#get token
RESULT=`curl --data "username=<your_admin_user>&password=<your_passwod>&grant_type=password&client_id=admin-cli" http://localhost:8090/auth/realms/master/protocol/openid-connect/token`
TOKEN=`echo $RESULT | sed 's/.*access_token":"//g' | sed 's/".*//g'`
#create user
curl -X POST -d '{ "clientId": "myclient" }' -H "Content-Type:application/json" -H "Authorization: bearer ${TOKEN}" http://localhost:8090/auth/realms/master/clients-registrations/default