Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.

Break out of a stuck approach by reframing a technical problem through structured thinking frameworks. Use when blocked, going in circles, or when a fresh perspective is needed on architecture, design, or debugging.

Refactoring assessment and patterns. Use after tests pass (GREEN phase) to assess improvement opportunities.

Expert assistant for developing Model Context Protocol (MCP) servers in Python. Use when creating, debugging, or optimizing MCP servers with FastMCP, tools, resources, and prompts.

Python coding conventions and guidelines including PEP 8, type hints, docstrings, and testing standards. Automatically applied when working with Python files.

Generate high-quality Product Requirements Documents (PRDs) for software systems and AI-powered features. Includes executive summaries, user stories, technical specifications, and risk analysis.

Planning work in small, known-good increments. Use when starting significant work or breaking down complex tasks.

Query official Microsoft documentation to find concepts, tutorials, and code examples across Azure, .NET, Agent Framework, Aspire, VS Code, GitHub, and more. Uses Microsoft Learn MCP as the default, with Context7 for content that lives outside learn.microsoft.com.

Markdown document author and editor that enforces a consistent style and structure convention. Use when writing new .md documentation files, reviewing or fixing existing ones, renaming files, or restructuring a docs/ directory. Triggers on requests like: "문서 작성", "문서 수정", "README 정리", "docs 구조 개선", "문서명 이상해", "setup 가이드 써줘", or any task involving creating or editing user-facing .md files. Does NOT apply to CLAUDE.md, localdocs/, or inline code comments.

Links a project's localdocs/ folder to the TIL repository via symlink for centralized document management. Use when setting up a new project, after accidentally deleting localdocs/, or when connecting localdocs/ to a TIL repo for git-backed persistence. Triggered by requests like "link localdocs to TIL", "setup localdocs symlink", or "/localdocs-til-link 802 that-night-sky".

Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree. Use when user wants to stress-test a plan, get grilled on their design, or mentions "grill me".

Docker containerization expert for creating optimized, secure multi-stage Dockerfiles and docker-compose configurations. Use when writing or reviewing Dockerfiles, docker-compose files, optimizing image size, adding security hardening, configuring health checks, setting up container networking, or any Docker-related task.

Apply the 7 Da Vincian Principles to define problems, set direction, and reflect on life choices. Use for career decisions, goal setting, life planning, or when you need to clarify what the real question is before solving it.

Check code quality without making changes — lint, format, type, and security checks. Use when you want to inspect issues before fixing them.

Auto-fix lint and formatting issues in Python code using ruff. Use when you want to apply automatic code fixes. Does not fix type errors or security issues.

Run dependency security audit using pip-audit. Use when checking for known vulnerabilities in project dependencies.

IMPORTANT: This skill must be run in the template repo context, not in a downstream project. Propose changes from the current project back to the upstream python-project-template repository by generating a structured proposal file in proposals/. Use when a pattern, rule, hook, skill, or config in this project is good enough to share with the template. Triggers on: "템플릿에 반영", "upstream 제안", "template에 올리고 싶어", "이 패턴 템플릿에 추가", "proposal 만들어줘".

Elite technical content evaluator and curriculum architect for reviewing technical training materials, documentation, and educational content. Use when evaluating course quality, reviewing technical docs, assessing pedagogical value, auditing exercises for actionability, grading educational content A-F, or identifying documentation wrappers disguised as courses.

Show current project status — worklog state, Phase progress, and layer implementation coverage. Use when you need a snapshot of where the project stands.

Import Dev Sentinel experiences into localdocs/learn.sentinel.md. Use when the user wants to bring gotchas, failure lessons, or struggle experiences captured by Dev Sentinel into the project's local knowledge base. Triggers: "sentinel 가져와", "sentinel import", "gotcha 정리", "경험 가져와", "sentinel에서 배운 것", "실패 경험 가져와".

Bootstraps and validates agentic project structures for GitHub Copilot (VS Code) and OpenCode CLI workflows. Run after `opencode /init` or VS Code Copilot initialization to scaffold proper folder hierarchies, instructions, agents, skills, and prompts.

Instructions for building Model Context Protocol (MCP) servers using the Python SDK. Provides patterns, best practices, and code examples for FastMCP, tools, resources, prompts, and transports.

Generate a complete MCP server project in Python with tools, resources, and proper configuration. Use when scaffolding a new MCP server from scratch.

Playwright Python AI test generation instructions based on official documentation. Use when writing or reviewing Playwright tests in Python.