Building Robust .NET Client Libraries: A REST API Design Case Study

Third-party REST APIs often lack official .NET client support, forcing developers to repeatedly handle authentication, serialization, and configuration. This case study shows how proper SDK design—transparent authentication, dependency injection integration, and strongly-typed configuration—elevates a fragile integration into a professional library with nearly 2,000 NuGet downloads. These patterns provide a blueprint for building production-ready .NET clients for any REST API.