Development

Use when generating or refactoring UI artifacts. Prefer modular components and consistent styling.

Migrate a browser-based JavaScript/Canvas game to Unity (C#). Use for Shelter 2250 (or similar) when you need: (1) Unity project setup decisions (2D/URP/input/UI), (2) mapping existing JS classes/systems to Unity architecture, (3) porting core simulation loops (time/resources/rooms/dwellers/save), and (4) planning incremental milestones with parity checks.

Visual guide for APC Mini MK2 LED and button mapping. Use when user needs to know "which button", "pad location", "LED position", "coordinate to note", "note to coordinate", or wants to understand the physical layout of the controller.

Convert Python loops to vectorized PyTorch tensor operations for performance. This skill should be used when optimizing computational bottlenecks in PyTorch code during Phase 4 performance optimization.

Expert software architecture guidance for system design, design patterns, architectural decisions, code reviews, scalability planning, and technical leadership. Use when discussing architecture, design patterns, system design, refactoring, technical decisions, or code structure.

Validate constitutional compliance for specifications, plans, tasks, code, and operationsusing the SDD Framework Constitution v1.5.0 (14 principles). Use when checking if workfollows constitutional requirements or executing compliance validation.This skill provides guidance on applying all 14 constitutional principles and runningautomated compliance checks. It ensures all work adheres to immutable, critical, andstandard principles governing architecture, quality, workflow, and safety.Triggered by: User request for "constitutional check", "compliance validation","does this follow the constitution?", or before major milestones (commit, PR, release).

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.

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.

Guide for testing Firebase Admin SDK with Vitest mocks. Use when writing tests that involve Firebase Auth, Firestore, or Firebase App.

Practical guide for building production ML systems based on Chip Huyen's AI Engineering book. Use when users ask about model evaluation, deployment strategies, monitoring, data pipelines, feature engineering, cost optimization, or MLOps. Covers metrics, A/B testing, serving patterns, drift detection, and production best practices.

Implement n8n credential types including API key, OAuth2, and header-based authentication patterns. Use this skill when creating *.credentials.ts files, implementing ICredentialType interfaces, configuring OAuth2 flows, setting up credential testing, injecting authentication headers, or following credential security best practices. Apply when building any n8n node that requires API authentication, token management, or secure credential handling.

Write routes following the Epic architecture patterns. Use when creating HTTP endpoints for behaviors, webhooks, or streaming. Triggers on "create a route", "add a webhook", or "write a route for".

Generates comprehensive Map of Content (MOC) documentation for software projects using standard markdown links, analyzing current implementation state from codebase and devlog notes

Write optimized and secure database queries using parameterized queries, eager loading, and proper indexing strategies. Use this skill when writing database queries, constructing SQL statements, using ORM query methods, implementing data fetching logic, preventing SQL injection attacks, optimizing query performance, avoiding N+1 query problems, selecting specific columns instead of all data, implementing transactions for related operations, setting query timeouts, caching expensive queries, or working with WHERE clauses, JOINs, and ORDER BY statements. Apply this skill when fetching data from databases, optimizing slow queries, refactoring data access code, or reviewing query security and performance.

Comprehensive BDD testing with Cucumber and Gherkin syntax. Use when writing feature files (.feature), step definitions, hooks, or implementing Behaviour-Driven Development. Covers Gherkin keywords (Feature, Scenario, Given/When/Then, Background, Scenario Outline, Rule), step definition patterns for Ruby/JavaScript/Java/Python, hooks (Before/After/BeforeAll/AfterAll), tags, data tables, doc strings, and best practices. Triggers on cucumber, gherkin, BDD, feature files, step definitions, acceptance testing, executable specifications.

Generate high-quality recommendation letters for graduate school (MS/PhD), academic positions (faculty/postdoc), and industry/government/NGO roles. Uses template-based approach with context-aware customization. USE WHEN user says 'write recommendation letter', 'letter of recommendation', 'reference letter', or requests academic/professional recommendations.

Review React/TypeScript code against established coding guidelines. Use when reviewing React components, performing code audits, checking for React best practices, anti-patterns, performance issues, or when the user asks to review React code, check code quality, or audit React implementation.

Enforces local testing before any deployment. MUST be used before running vercel, git push, or any deployment command. Prevents deploying untested code.

Guide and run a SharePoint audit locally. Collect inputs, confirm PowerShell 7.4+ and Python 3.10+ are available, call PowerShell with certificate auth via wrapper, parse audit.json, and render Markdown/HTML. Use only local shell commands.

Migrate existing plugins to proper Claude Code format. Use when converting flat skill files, adding missing frontmatter, restructuring plugin directories, or upgrading plugin structure.