Clikt is a multiplatform command line interface parsing library for Kotlin that simplifies writing command line tools with an intuitive API.
The library addresses the complexity of building CLI applications by providing a declarative, type-safe approach to defining commands, options, and arguments. It handles the boilerplate work of parsing user input, generating help text, and managing command hierarchies, allowing developers to focus on business logic rather than argument parsing mechanics. The tool supports arbitrary nesting of commands and composable parameter values, enabling both simple scripts and complex multi-command applications.
Clikt suits Kotlin projects ranging from simple utilities to sophisticated CLI tools that need structured command hierarchies. The library is particularly valuable for developers building tools that target multiple platforms, since it provides multiplatform packages for JVM, Node.js, and native Linux, Windows, and macOS targets. It automatically generates help output and shell autocomplete scripts, reducing manual documentation work. The core module offers a lighter-weight option for projects with minimal CLI needs.
Development activity shows consistent engagement with the codebase through regular updates and refinements. The project maintains comprehensive documentation with sample applications demonstrating real-world usage patterns. The library is distributed through Maven Central with snapshot builds available for early access to new features.
