Design

Creates syntactically correct mermaid diagrams (flowchart, sequenceDiagram, classDiagram, stateDiagram, erDiagram, gantt, mindmap) following official specifications. Prevents common errors like special characters in labels, subgraph syntax, note misuse, and reserved words. Use when creating or editing mermaid diagrams in documentation or design files.

ユーザー要件を分析し、システム設計ドキュメント(DESIGN.md)を生成します。ユーザー要件が曖昧または不明確な場合、システムアーキテクチャの設計が必要な場合、大規模な機能開発の設計仕様が必要な場合、技術的実現可能性の検証が必要な場合に使用します。不明点はAskUserQuestionツールで確認します。

承認済みの設計書（DESIGN.md）からTDD準拠のTODO.mdを作成します。analyzing-requirementsスキルで設計が完了・承認された後に使用します。developingスキルで実装できる形式のタスクリストを生成します。

Creates a new ButterCut release with version bump, changelog, git tag, gem build, and GitHub release. Use when publishing a new version.

Use when user wants to execute long-running tasks that require multiple sessions to complete. This skill manages task decomposition, progress tracking, and autonomous execution using Codex non-interactive mode with auto-continuation. Trigger phrases include autonomous, long-running task, multi-session, 自主执行, 长时任务, autonomous skill.

Interactive feature development workflow from idea to implementation. Creates requirements (EARS format), design documents, and implementation task lists. Use when creating feature specs, requirements documents, design documents, or implementation plans. Triggered by "kiro" or references to .kiro/specs/ directory.

Use when user asks to leverage claude or claude code to do something (e.g. implement a feature design or review codes, etc). Provides non-interactive automation mode for hands-off task execution without approval prompts.

Sets up a Mac for ButterCut. Installs all required dependencies (Homebrew, Ruby, Python, FFmpeg, WhisperX). Use when user says "install buttercut", "set up my mac", "get started", "first time setup", "install dependencies" or "check my installation".

Guide for Splitrail's terminal UI and file watching. Use when modifying the TUI, stats display, or real-time update logic.

Performance optimization guidelines for Splitrail. Use when optimizing parsing, reducing memory usage, or improving throughput.

Guide for adding a new AI coding agent analyzer to Splitrail. Use when implementing support for a new tool like Copilot, Cline, or similar.

Guide for working with Splitrail's MCP server. Use when adding tools, resources, or modifying the MCP interface.

Guide for updating model pricing in Splitrail. Use when adding new AI model costs or updating existing pricing data.

Generate images using Nano Banana Pro (Gemini 3 Pro Preview). Use when creating app icons, logos, UI graphics, marketing banners, social media images, illustrations, diagrams, or any visual assets. Supports reference images for style transfer and character consistency. Triggers include phrases like 'generate an image', 'create a graphic', 'make an icon', 'design a logo', 'create a banner', 'same style as', 'keep the style', or any request needing visual content.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.

Guide for creating, auditing, and packaging Claude Code skills. This skill should be used when building new skills, improving existing skills, understanding skill structure, or packaging skills for distribution.

Expert guidance on Swift Concurrency concepts. Use when working with async/await, Tasks, actors, MainActor, Sendable, isolation domains, or debugging concurrency compiler errors. Helps write safe concurrent Swift code.

Expert-level Home Assistant configuration management with efficient deployment workflows (git and rapid scp iteration), remote CLI access via SSH and hass-cli, automation verification protocols, log analysis, reload vs restart optimization, and comprehensive Lovelace dashboard management for tablet-optimized UIs. Includes template patterns, card types, debugging strategies, and real-world examples.

Use when creating or publishing Claude Code hooks - covers executable format, event types, JSON I/O, exit codes, security requirements, and PRPM package structure

Use when testing PRPM CLI commands locally - provides build, environment setup, execution workflow, contract testing to verify documented behavior matches implementation, and comprehensive cross-format conversion testing against local registry