Debugging — Skills

Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.

Postgres performance optimization and best practices from Supabase. Use this skill when writing, reviewing, or optimizing Postgres queries, schema designs, or database configurations.

Structured debugging methodology that mandates root cause investigation before attempting any fixes.

Ultra-compressed code review comments: location, problem, fix on one line each.

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.

Add, fix, and optimize schema markup to enable rich search results and help search engines understand page content.

Comprehensive website auditing across 230+ rules in 21 categories including SEO, performance, security, and accessibility.

Comprehensive reference guide for writing, debugging, and maintaining Playwright tests across all testing types and scenarios.

Read, create, search, and manage Obsidian vault notes via CLI with built-in plugin development and debugging tools.

Comprehensive guide for Firebase Crashlytics, including provisioning and SDK usage. Use this skill when the user needs help setting up Crashlytics, adding crash reporting, or using the Crashlytics SDK in their application.

Comprehensive competitor analysis from URLs, combining site scraping with SEO and market data into structured profiles.

Profile and optimize Python code using cProfile, memory profilers, and performance best practices.

Optimize for search engine visibility and ranking. Use when asked to "improve SEO", "optimize for search", "fix meta tags", "add structured data", "sitemap optimization", or "search engine optimization".

Systematic code review practices for constructive feedback, bug detection, and team knowledge sharing.

Comprehensive SwiftUI code review against modern APIs, accessibility, and performance standards.

40 NestJS best practices organized by priority across architecture, dependency injection, security, and performance.

Optimize GSAP animations for smooth 60fps by favoring transforms, batching DOM operations, and avoiding layout thrashing.

Provides React Native performance optimization guidelines for FPS, TTI, bundle size, memory leaks, re-renders, and animations. Applies to tasks involving Hermes optimization, JS thread blocking, bridge overhead, FlashList, native modules, or debugging jank and frame drops.

Audit and fix animation performance issues including layout thrashing, compositor properties, and scroll-linked motion.

Advanced prompt engineering techniques for optimizing LLM performance, reliability, and structured outputs in production.

Comprehensive error handling patterns across Python, TypeScript, Rust, and Go with language-specific implementations.