Performance
Performance profiling and optimization
playwright-best-practices
by currents-dev
Provides comprehensive guidance for writing, debugging, and maintaining Playwright tests in TypeScript. Use when writing Playwright tests, fixing flaky tests, debugging failures, implementing Page Object Model, configuring CI/CD, optimizing performance, mocking APIs, handling authentication or OAuth, testing accessibility (axe-core), file uploads/downloads, date/time mocking, WebSockets, geolocation, permissions, multi-tab/popup flows, mobile/responsive layouts, touch gestures, GraphQL, error handling, offline mode, multi-user collaboration, third-party services (payments, email verification), console error monitoring, global setup/teardown, test annotations (skip, fixme, slow), project dependencies, security testing (XSS, CSRF, auth), performance budgets (Web Vitals, Lighthouse), iframes, component testing, canvas/WebGL, service workers/PWA, test coverage, i18n/localization, Electron apps, or browser extension testing. Covers E2E, component, API, visual, accessibility, security, Electron, and extension testing.
architecture-paradigm-space-based
by athola
'Data-grid architecture for high-traffic stateful workloads with linear
query-validation
by nimrodfisher
SQL query review and validation for correctness, performance, and best practices. Use when reviewing queries for logical errors, optimizing query performance, checking for SQL anti-patterns, or validating business logic implementation in SQL.
funnel-analysis
by nimrodfisher
Conversion funnel analysis with drop-off investigation. Use when analyzing multi-step processes, identifying conversion bottlenecks, A/B testing funnel performance, or optimizing user journeys.
segmentation-analysis
by nimrodfisher
Customer/user segmentation with actionable insights. Use when identifying distinct customer groups, analyzing segment-specific behavior, profiling high-value segments, or testing segmentation hypotheses.
decision-support
by jmagly
Trade-off catalog: docs/common-tradeoffs.md
react-native-best-practices
by freekmurze
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.
pinescript
by iliaal
Pine Script v6 patterns: syntax rules, performance, debugging, backtesting, visualization. Use when asked to "write a Pine Script", "create an indicator", "build a strategy", "fix Pine code", or mentions PineScript, TradingView, indicator, strategy, or backtest.
analyzing-marketing-campaign
by https-deeplearning-ai
Analyze weekly marketing campaign performance data across channels. Use when analyzing multi-channel digital marketing data to calculate funnel metrics (CTR, CVR) and compare to benchmarks, compute cost and revenue efficiency metrics (ROAS, CPA, Net Profit), or get budget reallocation recommendations based on performance rules.
telnyx-account-notifications-go
by team-telnyx
Configure notification channels and settings for account alerts and events. This skill provides Go SDK examples.
war-room-checkpoint
by athola
"Inline reversibility assessment for embedded War Room escalation from commands. Use at decision points to determine escalation need. Skip for standalone strategic decisions."
skills-eval
by athola
Evaluate and improve Claude skill quality through auditing. Use when
hooks-eval
by athola
'Use this skill BEFORE deploying hooks to production. Use when auditing
llvm-optimization
by gmh5225
Expertise in LLVM optimization passes, performance tuning, and code transformation techniques. Use this skill when implementing custom optimizations, analyzing pass behavior, improving generated code quality, or understanding LLVM's optimization pipeline.
ad-creative
by agent-skills-hub
"When the user wants to generate, iterate, or scale ad creative — headlines, descriptions, primary text, or full ad variations — for any paid advertising platform. Also use when the user mentions 'ad copy variations,' 'ad creative,' 'generate headlines,' 'RSA headlines,' 'bulk ad copy,' 'ad iterations,' 'creative testing,' or 'ad performance optimization.' This skill covers generating ad creative at scale, iterating based on performance data, and enforcing platform character limits. For campaign strategy and targeting, see paid-ads. For landing page copy, see copywriting."
perf-theory-gatherer
by ComposioHQ
"Use when generating performance hypotheses backed by git history and code evidence."
perf-analyzer
by ComposioHQ
"Use when synthesizing perf findings into evidence-backed recommendations and decisions."
perf-code-paths
by ComposioHQ
"Use when mapping code paths, entrypoints, and likely hot files before profiling."
perf-profiler
by ComposioHQ
"Use when profiling CPU/memory hot paths, generating flame graphs, or capturing JFR/perf evidence."
oracle
by Soul-Brews-Studio
Manage Oracle skills and profiles. Use when user says "oracle", "profile", "install skill", "remove skill", "switch profile".
watch
by Soul-Brews-Studio
Learn from YouTube videos via Gemini transcription. Use when user says "watch", "transcribe youtube", "learn from video", or shares a YouTube URL to study.
feel
by Soul-Brews-Studio
Log emotions with optional structure. Use when user says "feel", "feeling", "mood", "tired", "sleepy", "frustrated", "happy", "excited".
valgrind
by mohitmishra786
Valgrind profiler skill for memory error detection and cache profiling. Use when running Memcheck to find heap corruption, use-after-free, memory leaks, or uninitialised reads; or Cachegrind/Callgrind for cache simulation and function-level profiling. Activates on queries about valgrind, memcheck, heap leaks, use-after-free without sanitizers, cachegrind, callgrind, KCachegrind, or massif memory profiling.
chrome-extension-development
by Mindrally
Expert guidelines for Chrome extension development with Manifest V3, covering security, performance, and best practices