How do I install the Dotnet Runfile skill?

Run npx skillmds@latest add tomevault-io/dotnet-runfile in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

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Which AI agents work with Dotnet Runfile?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Dotnet Runfile free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Dotnet Runfile?

tomevault-io (@tomevault-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Dotnet Runfile by tomevault-io — Agent Skill

Name: Dotnet Runfile
Author: tomevault-io

Dotnet Runfile

How to use the .NET 10 `dotnet run app.cs` feature. Use this skill when you need to run an existing single-file C# script, create a new C# script, run an ad-hoc C# script (e.g. to test the behavior of a C# snippet), or work on an existing C# script already in the repo. Covers how to run C# scripts and their syntax. Use when this capability is needed.

tomevault-io 8604951 2 files · 2.6 KB Updated Sep 17, 2026

File contents

dotnet run app.cs

Run C# files directly without .csproj project files. Requires .NET 10 (SpeedReader uses .NET 10, so this should already be installed).

dotnet run hello.cs

Usage Examples

#!/usr/bin/env dotnet run           // shebang (unix)
#:sdk Microsoft.NET.Sdk             // sdk (default; also .Web, .Worker)
#:package Humanizer@2.14.1          // nuget package (version required, wildcards ok)
#:property LangVersion=preview      // msbuild property
#:project ../src/MyLibrary          // project reference

Console.WriteLine("Hello, World!");

dotnet run hello.cs                   # run
dotnet run hello.cs -- arg1 arg2      # run with args
chmod +x hello.cs && ./hello.cs       # run via shebang
cat hello.cs | dotnet run -           # run from stdin
dotnet publish hello.cs -c Release    # publish
dotnet project convert hello.cs       # convert to full project w/ csproj

Shared Configuration

Share settings across multiple single-file apps by placing a Directory.Build.props file in the same or parent directory:

<Project>
  <PropertyGroup>
    <LangVersion>preview</LangVersion>
    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
  </ItemGroup>
</Project>

All .cs files in that directory tree inherit these settings.

Converted and distributed by TomeVault — claim your Tome and manage your conversions.

---name: dotnet-runfiledescription: How to use the .NET 10 `dotnet run app.cs` feature. Use this skill when you need to run an existing single-file C# script, create a new C# script, run an ad-hoc C# script (e.g. to test the behavior of a C# snippet), or work on an existing C# script already in the repo. Covers how to run C# scripts and their syntax. Use when this capability is needed.---# dotnet run app.csRun C# files directly without `.csproj` project files. Requires .NET 10 (SpeedReader uses .NET 10, so this should already be installed).```bashdotnet run hello.cs```## Usage Examples```csharp#!/usr/bin/env dotnet run // shebang (unix)#:sdk Microsoft.NET.Sdk // sdk (default; also .Web, .Worker)#:package Humanizer@2.14.1 // nuget package (version required, wildcards ok)#:property LangVersion=preview // msbuild property#:project ../src/MyLibrary // project referenceConsole.WriteLine("Hello, World!");``````bashdotnet run hello.cs # rundotnet run hello.cs -- arg1 arg2 # run with argschmod +x hello.cs && ./hello.cs # run via shebangcat hello.cs | dotnet run - # run from stdindotnet publish hello.cs -c Release # publishdotnet project convert hello.cs # convert to full project w/ csproj```## Shared ConfigurationShare settings across multiple single-file apps by placing a `Directory.Build.props` file in the same or parent directory:```xml<Project> <PropertyGroup> <LangVersion>preview</LangVersion> <TreatWarningsAsErrors>true</TreatWarningsAsErrors> </PropertyGroup> <ItemGroup> <PackageReference Include="Newtonsoft.Json" Version="13.0.3" /> </ItemGroup></Project>```All `.cs` files in that directory tree inherit these settings.---> Converted and distributed by [TomeVault](https://tomevault.io/claim/j-r-beckett) — claim your Tome and manage your conversions.

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