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Guide experienced developers through GREEN phase of TDD cycle - writing minimal implementation to pass failing tests

Generates sonar-project.properties for SonarQube code quality analysis and coverage reporting. Auto-detects test framework (Jest/Vitest) and configures coverage paths.

WHEN: Deep AI-powered code analysis, multi-model code review, security scanning with Codex and GeminiWHAT: Comprehensive code review using external AI models with severity-based findings, deduplication, and secret detectionWHEN NOT: Simple lint checks -> code-reviewer, Quick security only -> security-scanner, Style formatting -> code-quality-checker

Generate images using Nano Banana Pro (Gemini 3 Pro Preview). Use when creating app icons, logos, UI graphics, marketing banners, social media images, illustrations, diagrams, or any visual assets. Triggers include phrases like 'generate an image', 'create a graphic', 'make an icon', 'design a logo', 'create a banner', or any request needing visual content.

Comprehensive guide for conda-forge recipe development. Handles legacy (meta.yaml)and modern (recipe.yaml) formats, linting, CI troubleshooting, and feedstock maintenance.Enhanced with patterns from real conda-forge feedstocks (2025).USE THIS SKILL WHEN: creating conda recipes, packaging Python/Rust/Go/C++ software,fixing conda-forge build failures, updating feedstocks, migrating to recipe.yaml format,setting up private channels, or troubleshooting conda-forge CI.

Master cloud platforms and DevOps tools including Docker, Kubernetes, Terraform, AWS, and CI/CD pipelines. Use when building infrastructure, containerizing applications, or setting up deployment automation.

How to create Claude Code skill documents with YAML frontmatter, instructions, examples, and reference material

Implements product analytics with PostHog including event tracking, feature flags, and session replay. Use when adding analytics, A/B testing, or user behavior tracking to React and Next.js applications.

Implement Semantic Retrieval Optimization for AI search visibility. Use when performing SRO audits, building entity maps, designing SCN architecture, writing retrieval-optimized content, implementing schema markup, calibrating trust signals, analyzing query intent, assessing technical eligibility, or creating AI-ready content strategies. Triggers on semantic SEO, entity mapping, SCN, E-E-A-T, AI search optimization, passage engineering, knowledge graph, trust signals, or retrieval optimization requests.

Flower monitoring setup and configuration for Celery including real-time monitoring, authentication, custom dashboards, and Prometheus metrics integration. Use when setting up Celery monitoring, configuring Flower web UI, implementing authentication, creating custom dashboards, integrating with Prometheus, or when user mentions Flower, Celery monitoring, task monitoring, worker monitoring, or real-time metrics.

Comprehensive code documentation standards and guidelines for maintaining up-to-date documentation across Python, HTML, CSS, and JavaScript codebases. Use when creating or modifying code to ensure proper documentation practices and maintainable code.

Generate a verifiable GitHub Wrapped year-in-review as a single-file HTML (raw gh API JSON saved, Python-built dataset embedded), with a Bilibili-style narrative, smooth transitions, and mobile-friendly paged mode. Requires gh CLI to be authenticated.

Modern UI/UX design principles for minimalist, efficient, and elegant interfaces. Covers keyboard-driven design, command palettes, component architecture, accessibility, and performance. Based on analysis of Linear, Raycast, Arc, and other top-tier developer tools in 2025. Use when designing UI components, planning features, or reviewing interface design decisions.

Use when implementing any feature or bugfix, before writing implementation code - write the test first, watch it fail, write minimal code to pass; ensures tests actually verify behavior by requiring failure first

Generates TypeScript declaration files (shims-vue.d.ts, shims-svg.d.ts) to enable type-safe imports of Vue components and SVG files.

Next.js fullstack development guidelines for React 19 and Next.js 15+. Use when building Next.js applications with Feature-Sliced Design, TailwindCSS v4, ShadCN, Jotai, React Query, and Supabase integration. Covers file naming, component architecture, testing with Vitest/Playwright, UI/UX design patterns, and Toss frontend principles.

Write strategic, behavior-focused tests for core user flows and critical functionality using Vitest for unit tests and Playwright for end-to-end testing. Use this skill when writing test files, testing utilities, or implementing test coverage for critical paths. When working on Vitest test files (.test.ts, .spec.ts), Playwright E2E test suites, test setup and configuration files (vitest.config.ts, test-setup.ts), mock implementations for external dependencies, testing utility functions or test helpers, component test files using React Testing Library, API route test files, or integration tests for Content Collections and data fetching logic.

Measure and optimize WebF app performance from the JavaScript side (performance.mark/measure, bundle size, code splitting, debouncing, CSS transforms). Use when the user mentions performance.mark/measure, JS profiling, heavy JS work, bundle size, code splitting, debouncing, or animation performance.

Expert D&D 5th Edition (2014 PHB) character sheet manager and game master assistant. Use when creating characters, leveling up, calculating ability modifiers, managing spells, tracking hit points, updating equipment, applying class features, or answering rules questions about D&D 5e.

Design learning experiences for AI-native software development, integrating the Three Roles Framework (AI as Teacher/Student/Co-Worker), co-learning partnership pedagogy, and "Specs Are the New Syntax" paradigm into programming curriculum. Use this skill when educators need to prepare students for professional AI-driven development workflows, teach effective specification-first collaboration, or balance AI assistance with foundational learning goals. This skill helps create lessons that leverageAI tools appropriately while ensuring students build independent capability, bidirectional learningpatterns, and ethical AI use practices. Aligned with Constitution v4.0.1.