Development

Use when designing system architecture, creating design documents, planning technical architecture, or making high-level design decisions. Apply when user mentions system design, architecture, technical design, design docs, or asks to architect a solution. Use proactively when a feature requires architectural planning before implementation.

**UNIVERSAL TRIGGER**: Use when user wants to GET/FETCH/RETRIEVE any data FROM Bugsnag. Common patterns: - "get/show/list/display [something] from bugsnag" - "получить/показать/вывести [что-то] из bugsnag" - "bugsnag [organizations/projects/errors/details/events/comments/stats]" - "what [data] in bugsnag", "check bugsnag [resource]" Specific data types supported: 📊 **Organizations & Projects**: - "list bugsnag organizations/orgs", "show organizations" - "list bugsnag projects", "available projects", "проекты bugsnag" 🐛 **Errors (viewing)**: - "show/list bugsnag errors", "что в bugsnag", "check bugsnag" - "open errors", "error list", "ошибки bugsnag", "открытые ошибки" - "errors with severity error/warning", "filter bugsnag errors" 🔍 **Error Details**: - "bugsnag details for <id>", "error details", "детали ошибки" - "show stack trace", "error context", "what happened in error" - "events for error", "error timeline", "события ошибки" 💬 **Comments**: - "show comments for error", "error comments", "комментарии ошибки" - "bugsnag discussion", "what comments on error" 📈 **Analysis**: - "analyze bugsnag errors", "error patterns", "анализ ошибок" - "bugsnag statistics", "error trends", "что происходит в bugsnag" ✅ **Management** (write operations): - "mark as fixed/resolved", "fix error", "resolve error", "close error" - "закрыть ошибку", "отметить как решенную", "исправить ошибку" - "add comment to error", "comment on bugsnag error" - NOTE: Fix/Resolve/Close are synonyms - all mark error as resolved in Bugsnag TRIGGERS: bugsnag, получить из bugsnag, показать bugsnag, список bugsnag, bugsnag data, bugsnag info, check bugsnag, what in bugsnag, bugsnag status, error tracking, error monitoring, production errors, stack trace, bugsnag organizations, bugsnag projects, bugsnag errors, bugsnag details, bugsnag events, bugsnag comments, bugsnag analysis, ошибки в bugsnag, что в bugsnag, проверить bugsnag, данные bugsnag, fix error, resolve error, close error, закрыть ошибку, исправить ошибку, отметить как решенную This skill provides complete Bugsnag API integration for viewing and managing error tracking data via Ruby helper scripts.

This skill should be used when the user asks to "create a skill", "add a new skill", "write a skill", "make a skill", "build a skill for Claude", or mentions creating Claude Code skills, skill development, or SKILL.md files. Provides guidance for creating well-structured Claude Code skills with proper triggers and progressive disclosure.

Professional CV and resume builder transforming career narratives into ATS-optimized, multi-format resumes. Integrates with career-biographer for data and competitive-cartographer for positioning. Generates PDF, DOCX, LaTeX, JSON Resume, HTML, and Markdown. Activate on 'resume', 'CV', 'ATS optimization', 'job application'. NOT for cover letters, portfolio websites (use web-design-expert), LinkedIn optimization, or interview preparation.

Master backend development, API design, server architecture, database integration, authentication, microservices, and production patterns. Includes Node.js, GraphQL, Spring Boot, ASP.NET Core, and PHP frameworks.

Write and format Rust documentation correctly. Apply proactively when writing code with rustdoc comments (//! or ///). Covers structure (inverted pyramid), intra-doc links (crate:: paths, reference-style), constant conventions (binary/byte literal/decimal), and formatting (cargo rustdoc-fmt). Also use retroactively via /fix-intradoc-links, /fix-comments, or /fix-md-tables commands.

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

여러 AI 에이전트(Claude, Codex)가 동일한 주제에 대해 병렬로 기획을 수행하고, 각 결과를 보여준 후 최종 머지된 기획안을 제시합니다. "3명이 기획해주세요"처럼 에이전트 수를 지정할 수 있으며, Claude와 Codex가 랜덤하게 분배됩니다.

Create new workflow nodes for the Workscript engine or refactor existing nodes. Generate complete, production-ready node implementations following the single-edge return pattern. Use when creating new nodes, developing custom integrations, building data manipulation nodes, refactoring existing nodes, or implementing workflow capabilities.

Expert in project scaffolding and lifecycle management for Microsoft 365 Copilot agents using the Agents Toolkit (ATK) CLI. **ALWAYS USE FIRST** when starting new agent projects. Use when (1) Creating/scaffolding new agent projects with 'atk new', (2) Setting up project structure and initial files, (3) Provisioning Azure resources with 'atk provision', (4) Deploying agents with 'atk deploy', (5) Packaging with 'atk package', (6) Publishing with 'atk publish', (7) Sharing agents, (8) Managing environments (.env files), (9) Troubleshooting ATK CLI or deployment issues. This skill handles PROJECT SETUP and TOOLING, not TypeSpec code implementation.

Develops intuition for what makes research "good" versus "incremental." Use when asked about research taste, how to identify good research, what makes a paper impactful, how to develop research intuition, or how to pick important problems. Analyzes patterns in highly-cited work and what top researchers do differently.

Creates jaw-dropping, production-ready frontend interfaces AND delivers perfectly matched real photos (Unsplash/Pexels direct links) OR flawless custom image-generation prompts for hero images, backgrounds, and illustrations. Zero AI slop, zero fake URLs.

Inlang Paraglide を使用した国際化（i18n）対応を支援します。翻訳メッセージの追加、reactiveMessage の使用、言語切り替え実装、翻訳のテスト、パラメータ付きメッセージなどの国際化関連タスクに使用します。

Updates project documentation in markdown files when requested. Use when the user asks to update, modify, or create project documentation such as README files, API docs, architecture docs, or other markdown documentation files.

Generate standalone Python scripts (not packaged projects) with PEP 723 inline metadata, a uv run shebang, and Typer CLI scaffolding. Use when the user wants a one-off executable script, automation tool, or runnable file that should declare dependencies inline and not live inside a package or project.

Detect N+1 query patterns in the codebase. Finds loops that contain database or API calls that should be batched. Works across all languages. Use when user asks to find performance issues or N+1 patterns.

React/TypeScript development guidelines. Suspense, lazy loading, useSuspenseQuery, features directory, MUI v7, TanStack Router, performance optimization. USE WHEN creating components, pages, features, data fetching, styling, routing, or frontend work.

[Extends backend-developer] Python FastAPI specialist. Use for FastAPI apps, async endpoints, Pydantic v2, SQLAlchemy async, dependency injection. Invoke alongside backend-developer for Python API projects.

Use for code review and quality feedback from both Codex and Gemini. Triggers on "council review code", "council code review", "have council review this", "get council feedback on code".

Master system design principles for building scalable, reliable, and maintainable systems. Use when designing large-scale applications, planning architecture, or preparing for system design interviews.