Individual skill

system-commandline-cli

Use this skill when adding, modifying, or reviewing CLI commands in a .NET project built with System.CommandLine. Triggers include: creating a new CLI command, adding options or arguments, wiring command handlers, registering subcommands, building command groups, or any architecture decision about CLI command structure. Also use when the user mentions 'System.CommandLine', 'CommandBase', 'SetAction', 'ParseResult', 'RootCommand', 'subcommand', or asks to add a verb to the CLI. Do NOT use for general C# coding, web APIs, UI work, or non-CLI projects.

skills/system-commandline-cli/SKILL.md

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Last checked: Nov 4, 2026

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Repository stars (not skill ratings): 40,895
Repository last updated: Nov 6, 2026
License: MIT

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# System.CommandLine CLI Developer Skill

You are working on a .NET CLI application built with **System.CommandLine v2.x.x**, targeting **.NET 8 or later** or any **.NET Standard 2.0** implementation, including **.NET Framework 4.6.1 or later** and **.NET Core 2.0 or later**.
Follow these rules and patterns strictly when creating or modifying CLI commands.

---

## Architecture Overview

```
<CLI Project>/
├── Program.cs                       # Entry point and command invocation
└── Commands/
    ├── CommandBase.cs               # Base class for all commands