Argos

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Argos is a lightweight yet feature-full type-safe command-line argument parsing library for Kotlin Multiplatform projects. Despite its small footprint and zero dependencies, it provides a declarative DSL for defining CLI interfaces while supporting advanced features like subcommands, validation rules, and automatic help generation.

Key Features

• Minimalistic Size: Incredibly small footprint with maximum functionality

• Type Safety: Leverage Kotlin's type system for compile-time argument validation

• Multiplatform: Native support for JVM, Linux Native (x64/ARM64), and Windows

• Zero Dependencies: No external runtime dependencies - completely self-contained

• Rich DSL: Intuitive domain-specific language that reads like natural language

• Advanced Constraints: Built-in constraints, custom validation, and conditional requirements

• Subcommands: Full support for git-style subcommand interfaces

• Terminal Support: ANSI colors, plain text, and Markdown output formats

Architecture

The library uses property delegation to create a clean, type-safe DSL where options and positional arguments are defined as delegated properties that automatically register themselves with the Arguments class.

Usage

class MyApp : Arguments() {
    val verbose by option("--verbose", "-v").bool().default(false)
    val inputFile by positional().required()
    val help by help()
}

For detailed documentation and examples, visit the Argos Documentation.