Api Design · Aaronontheweb/dotnet-skills
Design stable, backward-compatible C# public APIs
Explains extend-only API design principles for C# libraries and NuGet packages, covering source, binary, and wire compatibility, safe versus breaking changes, and versioning strategy to keep upgrades non-breaking for consumers.
Good for
- Review a pull request for breaking API changes
- Add a new overload without breaking compatibility
- Plan a versioning strategy for a NuGet package
- Source repository
- Aaronontheweb/dotnet-skills
- Category
- Design
Open-source skills are maintained by their authors and listed as published, with attribution. Results depend on how well the skill fits your task and material.
A good place to start
I'm adding a parameter to a public method in our NuGet package — help me design this change so it doesn't break consumers.

Make your next great thing.
Bring a question, a file, or an idea that’s not quite there yet.