The Klarna REST Core .NET Sample Code demonstrates how to access the API in REST architecture. Additional examples at https://github.com/klarna/kco_rest_dotnet/tree/v3.0/Klarna.Rest/Klarna.Rest.Core.Examples
The database that tried to be everything to everyone is being replaced by more specific tools. The Google Base API, launched in 2005, has been deprecated. In its place, Google suggests using its new Google Shopping Search API for finding products and Shopping Content API for merchants to add products. The new APIs will help Google focus on the most common uses of Google Base. However, the change means that developers will have to update code and that some non-shopping applications will be left without a replacement.