building-clislisted

# Building CLIs Build professional command-line interfaces across Python, Go, and Rust using modern frameworks with robust argument parsing, configuration management, and shell integration. ## When to Use This Skill Use this skill when: - Building developer tooling or automation CLIs - Creating infrastructure management tools (deployment, monitoring) - Implementing API client command-line tools - Adding CLI capabilities to existing projects - Packaging utilities for distribution (PyPI, Homebrew, binary releases) Common triggers: "create a CLI tool", "build a command-line interface", "add CLI arguments", "parse command-line options", "generate shell completions" ## Framework Selection ### Quick Decision Guide **Python Projects:** - **Typer** (recommended): Modern type-safe CLIs with minimal boilerplate - **Click**: Mature, flexible CLIs for complex command hierarchies **Go Projects:** - **Cobra** (recommended): Industry standard for enterprise tools (Kubernetes, Docker, GitHub CLI) - **urfave/cli**: Lightweight alternative for simple CLIs **Rust Projects:** - **clap v4** (recommended): Type-safe with derive API or builder API for runtime flexibility For detailed framework comparison and selection criteria, see [references/framework-selection.md](references/framework-selection.md). ## Core Patterns ### Arguments vs. Options vs. Flags **Positional Arguments:** - Primary input, identified by position - Use for required inputs (max 2-3 arguments) - Example: `convert i