Solid baseline for keeping your C# code modern and idiomatic. Covers the essential conventions for async/await patterns, public API design, and performance-sensitive scenarios like buffer handling and binary data work. Originally from aaronontheweb's dotnet-skills repo, now maintained by wshaddix with a decent following (47 stars, 437 installs). Best used as a starting point when you want Claude to write C# that doesn't feel like it's from 2015, especially if you're building libraries or working on high-throughput code. It won't replace team-specific style guides, but it handles the fundamentals well enough that you're not constantly correcting basic patterns.
npx skills add https://github.com/wshaddix/dotnet-skills --skill modern-csharp-coding-standards