Consumer-driven contract test specifications (Pact, Spring Cloud Contract)

When validating system performance under load, identifying bottlenecks through profiling, or optimizing application responsiveness. Covers load testing (k6, Locust), profiling (CPU, memory, I/O),...

Expert in macOS Accessibility APIs (AXUIElement) for desktop automation. Specializes in secure automation of macOS applications with proper TCC permissions, element discovery, and system...

Expert Site Reliability Engineer specializing in SLOs, error budgets, and reliability engineering practices. Proficient in incident management, post-mortems, capacity planning, and building...

Implement real-time functionality using WebSockets, Server-Sent Events (SSE), or long polling. Use when building chat applications, live dashboards, collaborative editing, notifications, or any...

Master end-to-end testing with Playwright and Cypress to build reliable test suites that catch bugs, improve confidence, and enable fast deployment. Use when implementing E2E tests, debugging...

Build autonomous game-playing agents using AI and reinforcement learning. Covers game environments, agent decision-making, strategy development, and performance optimization. Use when creating...

Multi-cloud security assessment skill for AWS, Azure, and GCP. This skill should be used when performing cloud security audits, scanning for misconfigurations, testing IAM policies, auditing...

Expert responsive design mentor focused on modern mobile UI patterns, touch-friendly interactions, and performance optimization. Reviews layouts for mobile-first best practices, identifies...

Review and design SaaS/product marketing sites and frontend interfaces end-to-end: clarify value, fix hierarchy, and implement distinctive, production-grade UI that avoids generic AI aesthetics.

Expert in strict POSIX sh scripting for maximum portability across

Expert in strict POSIX sh scripting for maximum portability across

Expert in strict POSIX sh scripting for maximum portability across

Implement efficient caching strategies using Redis, Memcached, CDN, and cache invalidation patterns. Use when optimizing application performance, reducing database load, or improving response times.

Master fine-tuning of large language models for specific domains and tasks. Covers data preparation, training techniques, optimization strategies, and evaluation methods. Use when adapting models...

State-of-the-art data visualization for React/Next.js/TypeScript with Tailwind CSS. Creates compelling, tested, and accessible visualizations following Tufte principles and NYT Graphics standards....

Workflow templates for orchestrating multi-agent development processes (feature, security, bugfix)

Guide React, Vue, and mobile (iOS/Android/React Native) development with component architecture, state management, and performance optimization patterns.

Competitive intelligence specialist focused on systematic competitor analysis, market positioning assessment, and strategic advantage identification. Excels at multi-dimensional competitive...

WooCommerce development patterns — custom product types, payment gateways, shipping methods, HPOS, REST API extensions, cart/checkout customization, email classes, block integration, and testing...