Agent skills for .NET and C# projects
166 open-license skills in our database are built for .NET and C#, and 416 skills match a typical .NET and C# project. Below: what coding agents get wrong on .NET and C#, 3 picks to start with, and where each agent loads them.
Updated 2026-10-18. Tags used for this page: dotnet.
What coding agents get wrong in .NET and C#
Agents write .NET Framework code in a modern .NET project, block on async with .Result, and register services with the wrong lifetime. Tests mix xUnit, NUnit and MSTest styles.
Skills that help
The .NET team's own skills (dotnet/skills), plus skills for best practices, design review, tests with xUnit or Verify, and ASP.NET Core.
Cursor rules: the database holds 16 Cursor rule files (.mdc) tagged .NET and C# (asp-net, consuming-dotnettool, dotnet-build, publishing-dotnettool, and more). Cursor reads them from .cursor/rules/. Other agents load SKILL.md skills, so most picks here are skills.
3 picks to start with
1. dotnet-best-practices
Ensure .NET/C# code meets best practices for the solution/project.
npx skills add github/awesome-copilot --skill dotnet-best-practices
2. csharp-testing
C# and .NET testing patterns with xUnit, FluentAssertions, mocking, integration tests, and test organization best practices.
npx skills add affaan-m/ECC --skill csharp-testing
3. dotnet-design-pattern-review
Review the C#/.NET code for design pattern implementation and suggest improvements.
npx skills add github/awesome-copilot --skill dotnet-design-pattern-review
Get the list for your exact project
These 3 fit .NET and C# in general. The scan box opens with a sample .NET and C# description you can edit. A scan reads your repo or description, shows the match count and 2 picks free, and the full curated list (up to 30 picks with install commands, reasons and overlap notes) costs $9 once.
Where each agent loads .NET and C# skills
- Claude Code: project folder
.claude/skills/, install flag--agent claude-code - Cursor: project folder
.cursor/skills/ or .agents/skills/, install flag--agent cursor - Codex: project folder
.agents/skills/, install flag--agent codex - GitHub Copilot: project folder
.github/skills/ or .agents/skills/, install flag--agent github-copilot
npx skills add owner/repo --skill skill-name --agent claude-code
How we count
We match project tags against 99,639 skills from 7,206 public GitHub repos (refreshed 2026-10-18). A skill built for another framework or language is left out, and so is a skill below our relevance floor. The picks on this page come from the ranked list for these tags. We favor broad practice skills over single-task ones. Licenses are shown as each repo declares them. Read a skill before you install it.
Questions
What agent skills should I use for .NET and C#?
Start with a broad practice skill built for .NET and C#, then add skills for testing and review. In our database 166 skills are tagged for .NET and C# and 416 skills match a typical .NET and C# project. The picks on this page are a place to start. A scan of your repo ranks the full list for your tasks.
Why so many .NET skills?
The .NET team publishes a large set in dotnet/skills. Many are narrow (one diagnostic or build task), so a scan ranks the broad ones first.
Are there Cursor rules for .NET and C#?
Yes. The database holds 16 Cursor rule files (.mdc) tagged .NET and C#. Cursor loads them from .cursor/rules/. Claude Code, Codex and Copilot do not read .mdc rules, so pick SKILL.md skills for those agents.
Where do .NET and C# skills go for Claude Code, Cursor, Codex and Copilot?
Claude Code reads .claude/skills/, Cursor reads .cursor/skills/ or .agents/skills/, Codex reads .agents/skills/, and GitHub Copilot reads .github/skills/ or .agents/skills/. The install command takes --agent with the agent name and copies the skill folder there.
Why 3 picks here?
The right list depends on your exact stack and tasks. Run a free scan for your project to see its match count and 2 picks. The full curated list is $9 once.
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By agent
Skills for Claude CodeSkills for CursorSkills for CodexSkills for GitHub Copilot