Follow the guide to set up an account. Download the private key as JSON and save it under folder Assets (e.g. API Project-xxxxxxx.json). IMPORTANT: set its Build Action as Embedded resource. Install NuGet package Google.Cloud.Translation.V2. Create TranslationClient TranslationClient _tc; GoogleCredential gc = GoogleCredential.FromStream(Utility.GetStreamFromResourceFile("API Project-xxxxxxx.json", GetType())); _tc = TranslationClient.Create(gc);…