# GcpAdcAuth Configuration for Google Application Default Credentials (ADC). `Goodmem.Client.Models.GcpAdcAuth` - `QuotaProjectId` (`string?`): Optional quota project used for billing JSON: `quotaProjectId`. - `Scopes` (`IReadOnlyList?`): Additional OAuth scopes. Empty list falls back to the default cloud-platform scope. JSON: `scopes`. [.NET](../../dotnet.md)