Debug failing Playwright E2E tests by analyzing error messages, stack traces, screenshots, and Playwright traces. Provides actionable solutions for common test failures including timeouts, selector issues, race conditions, and unexpected behaviors. Optionally uses Playwright MCP for live debugging.
Use pre-computed discovery files at .claude/state/ for codebase inventory questions. Triggers on component, hook, schema, form, type, inventory, what exists, list all, how many. Saves 90%+ tokens vs source scanning.
⚡ PRIMARY SKILL for: 'how does X work', 'investigate', 'analyze architecture', 'trace flow', 'find implementations'. PREREQUISITE: code-search-selector must validate tool choice. Launches codebase-detective with claudemem INDEXED MEMORY.
Use when errors occur deep in execution and you need to trace back to find the original trigger - systematically traces bugs backward through call stack with quantitative tracking, adding instrumentation when needed, to identify source of invalid data or incorrect behavior
Use when optimizing website performance. Run Google Lighthouse audits via MCP to measure metrics, identify bottlenecks, and iterate on improvements.
Apply principled memoization techniques to reduce re-rendering without introducing correctness bugs.
Design render budget systems that prevent UI regressions under heavy load.
Use for Python development requiring async programming, type system expertise, testing patterns, or performance optimization.
Show the name of the currently active profile
Use when encountering BUILD FAILED, test crashes, simulator hangs, stale builds, zombie xcodebuild processes, "Unable to boot simulator", "No such module" after SPM changes, or mysterious test failures despite no code changes - systematic environment-first diagnostics for iOS/macOS projects
Comprehensive Zig 0.15.2 development expert. Use when writing Zig code, debugging memory issues, designing build systems, implementing comptime metaprogramming, handling errors, or cross-compiling. Automatically activated for any .zig file or build.zig work.
Diagnoses and fixes Rust compile errors, borrow-checker issues, runtime panics, and logic bugs with clear explanations and idiomatic solutions.
Analyzes network traffic and exploits protocols. Use when working with PCAP files, Wireshark captures, packet analysis, protocol exploitation, traffic forensics, or data exfiltration detection.
Exploits web application vulnerabilities. Use when working with SQL injection, XSS, SSRF, SSTI, command injection, path traversal, authentication bypass, deserialization, or any web-based CTF challenge.
This skill should be used when the user asks for "MCP examples", "real-world patterns", "code search patterns", "browser proxy patterns", "process management patterns", "show me examples", or wants to see actual implementations from lci, agnt, or other real MCPs.
Use when analyzing UI patterns across codebases, comparing design system implementations, auditing UI consistency, or understanding existing patterns before implementation
무한 루프 및 토큰 폭주 방지를 위한 서킷 브레이커. Use when (1) 재귀 깊이 초과, (2) 동일 에러 반복, (3) 동일 파일 반복 수정, (4) 세션 시간 초과.
Drupal cache max-age configuration and behavior. Use when asked about time-based cache expiration, Cache::PERMANENT, max-age 0 issues, why Page Cache ignores max-age, or when content appears stale despite time expiration. Critical for understanding caching layer differences.
