IDE & Editors

Guide for modernizing legacy Python 2 scientific computing code to Python 3 with modern libraries. This skill should be used when migrating scientific scripts involving data processing, numerical computation, or analysis from Python 2 to Python 3, or when updating deprecated scientific computing patterns to modern equivalents (pandas, numpy, pathlib).

Balance the 4 types of professional time (Management, Creation, Consumption, Ideation). Use when discussing productivity, calendar management, time allocation, or work-life balance.

Decode and interpret text content from G-code files by analyzing toolpath geometry and coordinate patterns. This skill should be used when extracting text, letters, or symbols that are encoded as movement commands in G-code files (e.g., 3D printing, CNC engraving, laser cutting). Applies to tasks like identifying what text a G-code file will print/engrave, reverse-engineering embossed or engraved text from toolpaths, or visualizing G-code geometry to reveal hidden content.

Guidance for removing JavaScript from HTML while preserving structure and formatting. This skill applies when filtering XSS vectors, sanitizing HTML content, removing script tags and event handlers, or building HTML sanitization tools. It covers comprehensive XSS vector identification, format-preserving transformations, and verification strategies.

Guidance for transforming large text files (thousands to millions of rows) using text editors like Vim. This skill should be used when the task involves bulk text transformations, CSV manipulation, column reordering, regex-based find-and-replace operations, or when there are keystroke/efficiency constraints. Applies to tasks requiring macro-based editing, batch substitutions, or complex text processing where understanding the transformation pattern from input/output samples is needed.

Gather DevOps context for infrastructure planning. Detects IaC tools, providers, and recommends skills. Use when /majestic:plan detects infrastructure work.

Generate .agents.yml config from user answers. Provides tech stack templates for Rails, Python, Node, and Generic projects.

Identify the vital 20% of activities that produce 80% of results using real case studies and proven patterns. Use when optimizing business, learning, productivity, or any area where focus matters.

Analyze and optimize JavaScript bundle size, identify large dependencies, and improve load times. Use when bundles are large, investigating performance issues, or optimizing frontend assets.

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 capabilities with specialized knowledge, workflows, or tool integrations.

Guide for cross-compiling complex C programs (like DOOM) for embedded MIPS environments with custom VM runtimes. This skill applies when building software that targets MIPS architecture with limited stdlib support, custom syscall interfaces, or JavaScript-based VM execution environments. Use when cross-compiling games, applications, or any C code for constrained MIPS targets.

Guide for sanitizing git repositories by identifying and replacing sensitive information such as API keys, tokens, and credentials. This skill should be used when tasks involve removing secrets from codebases, sanitizing repositories before sharing, or replacing sensitive values with placeholders. Applies to tasks involving secret detection, credential removal, or repository cleanup for security purposes.

Guide pour (a) évaluer la conformité d'un dispositif lanceur d'alerte existant ou (b) rédiger une politique de signalement conforme sur la base d'un template fourni. Couvre la Directive UE 2019/1937, la loi Sapin II modifiée (Waserman 2022), le décret 2022-1284, le référentiel CNIL, les spécificités fonction publique et le devoir de vigilance.

Reviews existing tickets for gaps, inconsistencies, and issues with severity classification. This skill should be used when reviewing a ticket document for quality, completeness, and implementer readiness. Provides a structured review workflow with findings categorized by severity (Critical, High, Medium, Low) and specific before/after proposals for fixes.

Guidance for bypassing HTML/JavaScript sanitization filters in security testing contexts. This skill should be used when tasked with finding XSS filter bypasses, testing HTML sanitizers, or exploiting parser differentials between server-side filters and browsers. Applies to CTF challenges, authorized penetration testing, and security research involving HTML injection and JavaScript execution through sanitization bypasses.

This skill provides guidance for translating RStan (R-based Stan interface) code to PyStan (Python-based Stan interface). It should be used when converting Stan models from R to Python, migrating Bayesian inference workflows between languages, or adapting R data preparation logic to Python equivalents.

This skill provides guidance for cracking 7z archive password hashes. It should be used when tasks involve extracting hashes from password-protected 7z archives, selecting appropriate cracking tools, and recovering passwords through dictionary or brute-force attacks. Applicable to password recovery, security testing, and CTF challenges involving encrypted 7z files.

Download YouTube video transcripts when user provides a YouTube URL or asks to download/get/fetch a transcript from YouTube. Also use when user wants to transcribe or get captions/subtitles from a YouTube video.

Guide complet pour la rédaction de politiques de confidentialité conformes au RGPD. Contient les recommandations CNIL 2020, un template de référence et les bonnes pratiques. À utiliser lors de la rédaction ou révision d'une politique de confidentialité pour un site web ou une application.

This skill provides guidance for XSS filter bypass tasks where the goal is to craft HTML payloads that execute JavaScript despite sanitization filters. Use this skill when tasks involve bypassing HTML sanitizers (like BeautifulSoup), exploiting parser differentials between server-side sanitizers and browsers, or security testing/CTF challenges involving XSS filter evasion.