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Build, review, or improve Core Data persistence in apps that have not adopted SwiftData. Use when working with NSManagedObject subclasses,…

Rslib best practices for config, CLI workflow, output, declaration files, dependency handling, build optimization and toolchain integration. Use when writing,…

Configures and uses snipgrapher to generate polished code snippet images, including syntax-highlighted PNGs, SVGs, and WebP exports with custom themes,…

Collect and analyze on-device performance metrics and crash diagnostics using MetricKit. Use when setting up MXMetricManager, handling MXMetricPayload or…

Orchestrates design workflows by routing work through brainstorming, multi-agent review, and execution readiness in the correct order.

React 19 patterns with React Compiler. Trigger: When writing React 19 components/hooks in .tsx (React Compiler rules, hook patterns, refs as props). If using Next.js App Router/Server Actions, also use nextjs-15.

Format values for display using the FormatStyle protocol and its concrete types. Use when formatting numbers (integers, floating-point, decimals), currencies,…

Docker containerization best practices for building, securing, and deploying containers.

IDAPython and IDALib script reference for reverse engineering. Activate when the user needs to write IDAPython scripts in IDA, use IDALib for headless…

Use this skill when the user wants to work with PowerPoint presentations. Triggers include: - Generating a new PPT from a topic: 'generate a PPT' / '帮我做个PPT' / 'PPTを作って' / 'PPT 만들어줘', 'create a presentation about X' / '生成关于X的演示文稿' / 'Xについてのプレゼンを作って' / 'X에 대한 발표 자료 만들어줘', 'help me make slides' / '帮我做幻灯片' / 'スライドを作って' / '슬라이드 만들어줘' - Imitating an existing .pptx style/template: 'use this template' / '用这个模板' / 'このテンプレートを使って' / '이 템플릿을 써줘', 'imitate this PPT' / '仿照这个PPT' / 'このPPTを真似して' / '이 PPT를 따라 해줘', 'imitate this style' / '仿照这个风格' / 'このスタイルを真似して' / '이 스타일을 따라 해줘' - Editing an existing PPT via natural language: 'modify slide N' / '修改第N页' / 'N枚目のスライドを修正して' / 'N번 슬라이드 수정해줘', 'change the background' / '更换背景' / '背景を変えて' / '배경 바꿔줘', 'add a slide' / '新增一页幻灯片' / 'スライドを追加して' / '슬라이드 추가해줘', 'make it more beautiful' / '美化一下PPT' / 'もっときれいにして' / '더 예쁘게 다듬어줘', 'edit this PPT' / '改一下这个PPT' / 'このPPTを編集して' / '이 PPT 수정해줘' - Local file operations on .pptx (no backend): 'delete slide N' / '删除第N页' / 'N枚目のスライドを削除して' / 'N번 슬라이드 삭제해줘', 'reorder slides' / '调整幻灯片顺序' / 'スライドを並べ替えて' / '슬라이드 순서 바꿔줘', 'merge pptx' / '合并PPT' / 'pptxを結合して' / 'pptx 합쳐줘', 'extract slides' / '提取幻灯片' / 'スライドを抽出して' / '슬라이드 추출해줘', 'how many slides' / '有多少页幻灯片' / 'スライドは何枚ある' / '슬라이드 몇 장이야'

Integrate Apple Music playback, catalog search, and Now Playing metadata using MusicKit and MediaPlayer. Use when adding music search, Apple Music subscription…

抖音视频批量下载工具 - 基于 F2 框架实现高效、增量的视频下载功能。支持单个/批量博主下载，自动 Cookie 管理，差量更新机制。本技能应在用户需要批量下载特定博主视频、服务器部署自动化下载、或定期更新视频库时使用。

Research competitors and compare positioning, messaging, content strategy, and market presence. Use when analyzing a competitor, building battlecards,…

Implements keyboard, directional, and scene-level focus behavior across SwiftUI and UIKit. Use when managing @FocusState, defaultFocus, focused values,…

Conduct expert heuristic evaluations using Nielsen's heuristics and domain-specific criteria.

You are an expert in engineering-as-marketing strategy. Your goal is to help plan and evaluate free tools that generate leads, attract organic traffic, and…

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's…

Expert in LangGraph - the production-grade framework for building stateful, multi-actor AI applications. Covers graph construction, state management, cycles…

Expert guidance for HTML/XML parsing using Cheerio in Node.js with best practices for DOM traversal, data extraction, and efficient scraping pipelines.

Design error prevention, detection, and recovery experiences.