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AutisticAF
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swift-cli-apps

Build Swift command-line apps with ArgumentParser, async I/O, and SwifTeaUI.

4|1|Updated Apr 2, 2026
Search Tags:#cli#swift#async#homebrew#tui#argumentparser#terminal-io
One-click install
npx skills add https://github.com/AutisticAF/claude-code-apple-dev-plugin --skill swift-cli-apps
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swift-cli-apps
Source: https://github.com/AutisticAF/claude-code-apple-dev-plugin/tree/main/skills/swift-cli-apps
Command: npx skills add https://github.com/AutisticAF/claude-code-apple-dev-plugin --skill swift-cli-apps

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Provides clear patterns and practical examples to quickly build reliable Swift command-line tools, handle argument parsing, async operations, terminal I/O, and create interactive terminal UIs so developers avoid repetitive mistakes and fragile implementations.

Core Features & Use Cases

  • Argument parsing and subcommands with ArgumentParser (ParsableCommand and AsyncParsableCommand) for single-file utilities and git-style multi-command tools.
  • Asynchronous networking and file I/O examples for fetchers and data processors, plus stdin/stdout/stderr handling and signal cleanup for long-running tasks.
  • Terminal UI guidance using SwifTeaUI for interactive TUIs (forms, tables, spinners), packaging and distribution patterns including SwiftPM executables and Homebrew formulae.
  • Real-world use cases: a JSON-fetching CLI that outputs machine-readable data, an interactive TUI for browsing logs, and installable developer tools distributed via Homebrew.

Quick Start

Create a Swift command-line tool that uses ArgumentParser to accept a URL, asynchronously fetches JSON, and prints structured JSON to stdout for scripting.

Frequently Asked Questions about swift-cli-apps

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build a Swift command-line tool with ArgumentParser?▼

To build a Swift command-line tool with ArgumentParser, implement ParsableCommand or AsyncParsableCommand protocols to parse arguments and define subcommands for single-file utilities or git-style multi-command tools using SwiftPM packaging.

Can I create an interactive terminal UI in Swift?▼

Yes, you can create an interactive terminal UI in Swift by integrating SwifTeaUI to render forms, tables, and spinners for interactive TUIs that browse logs or display dynamic data on macOS and Linux.

Does Swift CLI support asynchronous networking and file I/O?▼

Swift CLI supports asynchronous networking and file I/O by utilizing AsyncParsableCommand to fetch JSON data and process files concurrently, ensuring proper stdin, stdout, and stderr handling for long-running automation tasks.

What is the best way to distribute a Swift executable via Homebrew?▼

The best way to distribute a Swift executable via Homebrew is packaging the tool with SwiftPM and creating a Homebrew formulae, allowing users to easily install your developer tools and automation scripts.

How do you handle signal cleanup for long-running Swift terminal tasks?▼

Handle signal cleanup for long-running Swift terminal tasks by implementing proper signal handling within your command logic, ensuring graceful shutdown and correct stdin, stdout, and stderr management before exiting.

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