harnesses-factory

Expert skill for the Jotai state management library. Use when implementing atom-based state management in React applications. Use this skill for: (1) Jotai atom design and implementation (2) Derived atoms, async atoms, atomFamily implementation (3) Refactoring based on Jotai best practices (4) Performance optimization (selectAtom, splitAtom, etc.) (5) Persistence (localStorage/sessionStorage integration) (6) TypeScript type definitions (7) Test implementation Triggered when users ask questions or request implementations related to "Jotai", "atom", or "state management".

Jotai状態管理ライブラリのエキスパートスキル。Reactアプリケーションでのatomベースの状態管理を実装する際に使用。以下の場合にこのスキルを使用: (1) Jotaiのatom設計・実装 (2) 派生atom、非同期atom、atomFamilyの実装 (3) Jotaiのベストプラクティスに基づくリファクタリング (4) パフォーマンス最適化（selectAtom、splitAtom等） (5) 永続化（localStorage/sessionStorage連携） (6) TypeScript型定義 (7) テスト実装 ユーザーが「Jotai」「atom」「状態管理」に関する質問や実装依頼をした場合に発動。

This skill provides structured question-asking capabilities for gathering user input, clarifying requirements, and making decisions during task execution. Use this skill when needing to present multiple choice questions, gather preferences, or get user confirmation on implementation choices.

Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.

Generate beautiful infographic PNG images from Claude Code changelog summaries. Use this skill after changelog-interpreter has generated a user-friendly summary, to create a visual representation that can be saved and shared.

Interpret Claude Code changelogs and generate user-friendly usage guides

This skill guides creating autonomous agents for Claude Code plugins using markdown files with YAML frontmatter. Use when building new agents, designing agent system prompts, or configuring agent behavior.

This skill guides creating slash commands for Claude Code—reusable Markdown-based prompts with YAML configuration. Use when building custom commands, designing command workflows, or extending Claude Code functionality.

This skill guides building high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services. Use when creating MCP servers, designing tool interfaces, or implementing protocol handlers.

This skill guides connecting MCP servers to Claude Code plugins for external service integration. Use when configuring MCP servers, setting up authentication, or integrating external tools.

This skill guides creating Claude skills—modular packages that extend capabilities with specialized knowledge and workflows. Use when creating new skills, packaging skills for distribution, or understanding skill architecture.