DynamoVisualProgramming.DynamoServices by Autodesk

<PackageReference Include="DynamoVisualProgramming.DynamoServices" Version="3.6.0-beta8640" />

 AuthServices

public static class AuthServices
Static class containing authentication service events. Useful if you want to make authenticated requests from your nodes.
public static object AuthProvider { get; }

Returns the active DynamoModel's AuthProvider.