Installation

Install han binary (required for hooks to work):

curl -fsSL https://han.guru/install.sh | bash

Then install this plugin:

han plugin install jutsu-kotlin

Overview

Advanced Kotlin programming skills for coroutines and DSL patterns

Skills

This plugin provides the following skills:

Kotlin Coroutines
Kotlin Dsl Patterns
Kotlin Null Safety

Usage

Once enabled, Claude will automatically apply these skills when working with relevant code. The plugin provides context and expertise that Claude uses to:

Write idiomatic code following best practices
Suggest appropriate patterns and architectures
Catch common mistakes and anti-patterns
Provide framework-specific guidance

Installation

Install with npx (no installation required):

han plugin install jutsu-kotlin

License

Licensed under MIT - see repository for details.

Skills

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Kotlin Coroutines

Use when kotlin coroutines for structured concurrency including suspend functions, coroutine builders, Flow, channels, and patterns for building efficient asynchronous code with cancellation and exception handling.

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Kotlin DSL Patterns

Use when domain-specific language design in Kotlin using type-safe builders, infix functions, operator overloading, lambdas with receivers, and patterns for creating expressive, readable DSLs for configuration and domain modeling.

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Kotlin Null Safety

Use when kotlin's null safety system including nullable types, safe calls, Elvis operator, smart casts, and patterns for eliminating NullPointerExceptions while maintaining code expressiveness and clarity.

Hooks

⚠️

Token Usage Notice

Hooks run automatically during Claude Code sessions and their output is sent to the model for processing. This may increase token usage and associated costs. Consider disabling hooks you don't need via han-config.yml.

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Stop

Runs when the main Claude Code agent has finished responding. Can verify task completion, check quality gates, or ensure documentation requirements are met before the session ends.

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SubagentStop

Runs when a Claude Code subagent (Task tool call) has finished responding. Can validate subagent outputs, enforce quality standards, or trigger additional workflows after delegated tasks complete.