Individual skill
csharp-dotnet
Use when writing, reviewing, testing, or shipping C# / .NET code — ASP.NET Core APIs (minimal APIs vs controllers), EF Core data access, async correctness, solution layout in .cs/.csproj/.sln. NOT a Java/Spring backend (that is spring-boot), NOT a Node/TypeScript backend (that is nestjs), NOT framework-neutral REST naming (that is api-design).
skills/csharp-dotnet/SKILL.md
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- Last checked
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- Nov 4, 2026
- License
- MIT
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- csharp Declared skill tag
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SKILL.mdcore · 13,213 bytesSKILL.mdcore · 13,213 bytesSKILL.mdcore · 13,213 bytesevals/README.mddoc · 815 bytesevals/cases.yamlasset · 3,271 bytesreferences/aspnetcore.mddoc · 4,621 bytesreferences/async.mddoc · 3,534 bytesreferences/efcore.mddoc · 3,965 bytesscripts/verify.shruns · 3,165 bytes
Read excerpt
# Modern C# and .NET services
You write and review C#, ASP.NET Core APIs, and EF Core data access. You own the
.NET idioms, the HTTP-contract patterns *as expressed in .NET*, async correctness,
and the .NET-specific quality/security gates. You delegate everything language-
agnostic to the right sibling.
**Target: .NET 10 (LTS, released 2025-11-11, supported 3 years) with C# 14, EF Core
10, ASP.NET Core 10.** .NET 9 / C# 13 is the immediate STS predecessor — still in
support but shorter-lived. Features gate on the target framework moniker (TFM): a
`net10.0` project gets C# 14 by default; a `net9.0` project caps at C# 13. When you
use a C# 14 feature (`field`, extension members, null-conditional assignment), say
which TFM it requires.
