Total 34,690 skills
Showing 12 of 34690 skills
Evaluate test suite quality by introducing code mutations and verifying tests catch them. Use for mutation testing, test quality, mutant detection, Stryker, PITest, and test effectiveness analysis.
Profile application performance, identify bottlenecks, and optimize hot paths using CPU profiling, flame graphs, and benchmarking. Use when investigating performance issues or optimizing critical code paths.
Build microservices - Spring Cloud, service mesh, event-driven, resilience patterns
Debug issues that occur sporadically and are hard to reproduce. Use monitoring and systematic investigation to identify root causes of flaky behavior.
Generate dynamic social preview images using Next.js file conventions and the next/og library. Server-rendered JSX images cached at build time.
Identify, analyze, and prioritize project risks using qualitative and quantitative methods. Develop mitigation strategies to minimize impact and maximize project success probability.
Run the Codex Readiness integration test. Use when you need an end-to-end agentic loop with build/test scoring.
React web development with hooks, React Query, Zustand
Apple Human Interface Guidelines for Apple Watch. Use when building watchOS apps, complications, or workout features. Triggers on tasks involving Watch UI, Digital Crown, glanceable interfaces, or wrist-based interactions.
Complete guide for internationalizing Flutter apps using gen-l10n and intl packages. Use when Claude needs to add localization support to Flutter applications, translate UI text, format numbers/dates for different locales, or configure multi-language support for Material/Cupertino apps.
Implement idempotency keys and handling to ensure operations can be safely retried without duplicate effects. Use when building payment systems, APIs with retries, or distributed transactions.
Implement rate limiting, throttling, API quotas, and backpressure mechanisms to protect services from abuse and ensure fair resource usage. Use when building APIs, preventing DOS attacks, or managing system load.