clikt

Parse and validate Kotlin CLI arguments using Clikt.

Updated Apr 8, 2026
One-click install
npx skills add https://github.com/ClankerGuru/opsx --skill clikt
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: clikt
Source: https://github.com/ClankerGuru/opsx/tree/main/cli/src/main/resources/content/skills/clikt
Command: npx skills add https://github.com/ClankerGuru/opsx --skill clikt

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Kotlin CLI development often involves boilerplate for parsing flags, options, and subcommands, along with ensuring type-safe conversion and helpful usage messages. Clikt provides a Kotlin-centric approach to define and validate CLI interfaces, reducing boilerplate and improving reliability.

Core Features & Use Cases

  • Declarative command definitions using CliktCommand, option() and argument() with built-in converters for common types.
  • Subcommands, contexts, and testing hooks to build composable, testable CLIs and interactive prompts where needed.
  • Use Case: build a small tool that accepts flags, validates input, and prints structured results, or develop a complex CLI with nested subcommands and explicit usage messages.

Quick Start

Create a Kotlin CLI by subclassing CliktCommand and invoking main(args) to parse options.

Frequently Asked Questions about clikt

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

FAQPage Schema
How do I parse command-line arguments in Kotlin with type-safe options?

To parse command-line arguments in Kotlin, subclass CliktCommand and invoke main(args) to process options and arguments. This declarative approach uses built-in converters to ensure type-safe validation and reduce boilerplate when defining CLI interfaces.

What is the best way to build a Kotlin CLI with nested subcommands?

Building a Kotlin CLI with nested subcommands involves defining declarative command structures using CliktCommand. You configure explicit contexts to manage shared state across nested command hierarchies and generate structured, composable usage messages.

How do I validate user input and add interactive prompts in a Kotlin CLI?

To validate user input in a Kotlin CLI, use Clikt's option() and argument() handling with built-in type converters. You can integrate interactive prompts within the command structure to query users and validate their responses before executing logic.

Does Clikt support testing hooks for Kotlin command-line applications?

Yes, Clikt supports testing hooks for Kotlin command-line applications. You can use these integrated testing features to verify command parsing, option validation, and subcommand routing logic without executing actual system side effects.

How do I generate helpful usage messages when parsing Kotlin CLI arguments?

Generating helpful usage messages when parsing Kotlin CLI arguments is handled automatically by the Clikt framework. By defining declarative options and arguments, the command structure produces explicit and structured usage output for end users.