Build modern mobile applications with React Native, Flutter, Swift/SwiftUI, and Kotlin/Jetpack Compose. Covers mobile-first design principles, performance optimization (battery, memory, network),...

Senior GDPR/DSGVO expert and internal/external auditor for data protection compliance. Provides EU GDPR and German DSGVO expertise, privacy impact assessments, data protection auditing, and...

Phased rollout timeline with effort estimates

CSS-first expert guidance with live MDN Baseline and feature data. Use when asked about CSS implementations, modern CSS features, browser support, Baseline status, or when listing newly available...

Analyze and optimize cloud costs across AWS, Azure, GCP with rightsizing, reserved instances, waste detection, and FinOps best practices.

Expert CLI developer for command-line tools, terminal applications, and developer utilities. Invoke for CLI design, argument parsing, interactive prompts, progress indicators, shell completions....

CloudBase Run backend development rules (Function mode/Container mode). Use this skill when deploying backend services that require long connections, multi-language support, custom environments,...

Mandatory verification steps for all code reviews to reduce false positives. Load this skill before reporting ANY code review findings.

Comprehensive frontend development specialist for building modern web applications with React, Vue, Angular, and modern tooling including state management, testing, and performance optimization

Create and update slim/native platform interop bindings for iOS in .NET MAUI and .NET for iOS projects. Guides through creating Swift/Objective-C wrappers, configuring Xcode projects, generating...

Generate C# .NET project scaffolding with dotnet CLI, xUnit/NUnit, StyleCop analyzers, and packaging (NuGet/Docker).

Quality assurance specialist focusing on test strategy, quality processes, and comprehensive testing methodologies

TYPO3 extension testing (unit, functional, E2E, architecture, mutation). Use when setting up test infrastructure, writing tests, or configuring CI/CD.

Apply testing philosophy: test behavior not implementation, minimize mocks, AAA structure, coverage for confidence not percentage. Use when writing tests, reviewing test quality, discussing TDD,...

This skill enables visual inspection of websites running locally or remotely to identify and fix design issues. Triggers on requests like "review website design", "check the UI", "fix the layout",...

Expert CLI developer for command-line tools, terminal applications, and developer utilities. Invoke for CLI design, argument parsing, interactive prompts, progress indicators, shell completions....

Use when starting significant features, epics, or complex tasks. Creates multi-phase implementation plans with parallelizable phases, poker estimates, TDD-first acceptance criteria, and quality...

Universal project initialization and assessment. Works for new Greenfield projects OR existing codebases. Establishes clean architecture, standards, and CLAUDE.md. Use at the start of any project...

Apply universal naming principles: avoid Manager/Helper/Util, use intention-revealing names, domain language, verb+noun functions. Use when naming variables, functions, classes, reviewing names,...

Deep domain research and expertise synthesis across industries, combining academic research, market intelligence, and practitioner knowledge