Initialize the Realm App Client


The Realm app client is the interface to the MongoDB Realm backend. It provides access to the authentication functionality, functions, and sync management.

Access the App Client

Pass the Realm app ID for your Realm app, which you can find in the Realm UI.

var myRealmAppId = "<your_app_id>";
var app = App.Create(myRealmAppId);


For granular control of your app connection, such as custom timeouts for connections and the log level, you can pass an AppConfiguration object to the App.Create() method. The following example sets the LogLevel and the request timeout:

var appConfig = new AppConfiguration(myRealmAppId)
    LogLevel = LogLevel.Debug,
    DefaultRequestTimeout = TimeSpan.FromMilliseconds(1500)

app = App.Create(appConfig);


For most use cases, you only need your application’s App ID to connect to MongoDB Realm. The other settings demonstrated here are optional.