apple/swift-argument-parser

Health v2 · maintenance only

Adoption not part of the score

3757 stars · 406 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A Swift library from Apple for type-safe command-line argument parsing using property wrappers and the ParsableCommand protocol. It automatically generates usage help, error messages, and flag/option handling from declarative type definitions.

Use cases

• parse command-line arguments in a Swift CLI tool
• generate --help output automatically for a command-line utility
• define CLI flags and options with type safety
• build subcommand-based command-line tools in Swift
• handle CLI input validation with useful error messages

When to choose

• you are writing a command-line tool in Swift and want declarative, type-safe argument parsing
• you want automatic help text, usage strings, and error messages generated from your types
• you need subcommands and async command support in a Swift CLI

When to avoid

• you are building a GUI or web application, not a CLI
• your project is not in Swift
• you need extremely lightweight parsing and prefer hand-rolled argv handling

Facets

library · maturity stable

cli parser developer-tools developer-tools programming-languages cross-platform argument-parsing property-wrappers type-safe swift-package command-line swift macos linux

Member repositories

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