740 free skills
Performance skills
Skills for performance — profiling, caching strategy, database query tuning, and frontend load-time optimization.
Sourced from real, public repositories — synced daily, never invented.
740 free skills
Skills for performance — profiling, caching strategy, database query tuning, and frontend load-time optimization.
Sourced from real, public repositories — synced daily, never invented.
15 tools across six categories
13 of them never send your data anywhere
Free · No signup · No trial clock
SEE THE DIRECTORY
add-memory-trace-tags
openharmonyinsight/openharmony-skills
Use when adding new resource tracking types to memory profiling in developtools_profiler and third_party_musl repositories. Triggered by requests to add trace tags, resource labels, or memory tracking types.
babylonjs
curiosity-ai-bv/babylonjs-skill
Babylon.js 8 3D engine development expertise with curated API patterns, code examples, and on-demand documentation access. Use when working with Babylon.js scenes, meshes, materials (PBR/Standard), cameras, lights, shadows, GUI (2D/3D), animations, physics (Havok), thin instances, glTF loading, post-processing, WebXR, procedural/code-built 3D models, or any 3D rendering task. Covers: (1) Scene setup and engine initialization (WebGL/WebGPU), (2) Mesh creation, transforms, instancing, and merging, (3) PBR and Standard materials with textures, (4) Camera types (ArcRotate, Universal, Follow), (5) Lighting and shadows, (6) 2D/3D GUI with AdvancedDynamicTexture, (7) Animation system and animation groups, (8) Asset loading (glTF, OBJ, STL), (9) Performance optimization and profiling, (10) ASRS/warehouse digital twin visualization patterns, (11) Procedural modeling: building high-quality 3D models from primitives with animation-ready parent/pivot hierarchies, CSG2 booleans, lathes, extrudes, and custom VertexData.
performance-optimization
pluginagentmarketplace/custom-plugin-nodejs
Optimize Node.js application performance with caching, clustering, profiling, and monitoring techniques
sentry-nextjs-sdk
getsentry/sentry-for-claude
Full Sentry SDK setup for Next.js. Use when asked to "add Sentry to Next.js", "install @sentry/nextjs", or configure error monitoring, tracing, session replay, logging, profiling, AI monitoring, or crons for Next.js applications. Supports Next.js 13+ with App Router and Pages Router.
seo-analytics
rebyteai-template/rebyte-skills
Generate visual SEO analysis reports using Google PageSpeed Insights API. Use when user asks to analyze website performance, SEO scores, Core Web Vitals, or page speed. Outputs an interactive HTML report with charts and actionable recommendations.
cbioportal-database
leonchaox/qinyan-academic-skills
Query cBioPortal for cancer genomics data including somatic mutations, copy number alterations, gene expression, and survival data across hundreds of cancer studies. Essential for cancer target validation, oncogene/tumor suppressor analysis, and patient-level genomic profiling.
performance-engineer
rmyndharis/antigravity-skills
Expert performance engineer specializing in modern observability,
cache-strategy
ariadoss/superskills
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profiling-threat-actor-groups
mukul975/anthropic-cybersecurity-skills
Develops comprehensive threat actor profiles for APT groups, criminal
pptx-profile
tristan-mcinnis/pptx-from-layouts-skill
>-
game-analytics
alphaonedev/openclaw-graph
Analyzes game data metrics for player behavior tracking and performance optimization.
performance-optimization
miles990/claude-software-skills
Profiling, optimization techniques, and performance best practices
configure-memory-profiling
laurigates/claude-plugins
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senior-frontend
ovachiever/droid-tings
Comprehensive frontend development skill for building modern, performant web applications using ReactJS, NextJS, TypeScript, Tailwind CSS. Includes component scaffolding, performance optimization, bundle analysis, and UI best practices. Use when developing frontend features, optimizing performance, implementing UI/UX designs, managing state, or reviewing frontend code.
nextjs-seo-optimizer
kumbajirajkumar123/nextjs-seo-optimizer
Comprehensive Next.js SEO optimization skill for metadata, sitemaps, robots.txt, structured data, and Core Web Vitals. Use when building or auditing Next.js applications for SEO, implementing metadata API, generating sitemaps, adding Open Graph tags, creating JSON-LD structured data, optimizing for search engines, or improving search rankings. Works with Next.js 13+ App Router and Pages Router.
sentry-react-sdk
getsentry/sentry-for-claude
Full Sentry SDK setup for React. Use when asked to "add Sentry to React", "install @sentry/react", or configure error monitoring, tracing, session replay, profiling, or logging for React applications. Supports React 16+, React Router v5-v7 non-framework mode, TanStack Router, Redux, Vite, and webpack.
sentry-react-native-sdk
getsentry/sentry-for-claude
Full Sentry SDK setup for React Native and Expo. Use when asked to "add Sentry to React Native", "install @sentry/react-native", "setup Sentry in Expo", or configure error monitoring, tracing, profiling, session replay, or logging for React Native applications. Supports Expo managed, Expo bare, and vanilla React Native.
cpu-profile-analysis
microsoft/vscode
Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-*.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating user timing marks.
native-app-profiling
patrickserrano/skills
Profile native macOS/iOS apps using Time Profiler via CLI (xctrace). Use when asked to identify performance hotspots, profile CPU usage, or diagnose slow code paths without opening Instruments.
data-profiling
vm0-ai/vm0-skills
Profile datasets for schema, distributions, nulls, cardinality, outliers, relationships, and data quality.
nextjs-expert
cin12211/orca-q
Next.js framework expert specializing in App Router, Server Components, performance optimization, data fetching patterns, and full-stack development. Use this skill for Next.js routing issues, hydration errors, build problems, or deployment challenges.
performance-audit
serkan-ozal/browser-devtools-skills
Analyze web and backend performance using Web Vitals, network timing, and Node.js metrics. Use when the user asks about page performance, load times, Core Web Vitals (LCP, CLS, INP), slow pages, backend bottlenecks, or SEO performance factors.
django-query-profiling
lvtd-llc/skills
Find the Django ORM code and request path responsible for slow SQL by using APM traces, slow query logs, Django Debug Toolbar, query logging, and local reproduction. Use when a Django database performance issue is suspected but the exact queryset, view, serializer, template, or job causing it is not yet proven.
power-bi-diagnostics
julianobarbosa/claude-code-skills
Troubleshoot Power BI model performance, trace query execution, manage caches, and verify the pbi-cli environment using pbi-cli. Invoke this skill whenever the user says "pbi not working", "setup issues", "connection failed", "slow query", "performance", "profiling", "tracing", "health check", "model audit", "pbi setup", or encounters any pbi-cli error. This is the first skill to check when something goes wrong with pbi-cli.
django-test-profiling
lvtd-llc/skills
Profile and measure slow Django test suites with Django's runner, pytest-django, shell timing, py-spy, cProfile, pytest durations, and profiler visualizations. Use when a Django project has slow tests, unclear test-runtime bottlenecks, CI timing problems, startup overhead, database setup overhead, or a request to find the slowest tests before optimizing.
performance-optimization
thibautbaissac/rails_ai_agents
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use-profiles
neonwatty/qa-skills
Load saved Playwright storageState authentication profiles before browser automation. Activates when `.playwright/profiles.json` exists and browser work begins on authenticated pages. Trigger phrases include "use profile", "load profile", "browser as [role]", "authenticated browser", "logged in browser session".
elasticsearch
partme-ai/full-stack-skills
Guides Elasticsearch usage including index mapping design, query DSL (match, term, bool, aggregations), bulk indexing, cluster management, and performance tuning. Use when the user needs to implement full-text search, design index mappings, write complex search queries, or manage Elasticsearch clusters.
dayz-modding
stardz-team/dayz-modding-skills
ALWAYS use when touching ANY DayZ file (.c, config.cpp, mod.cpp, .layout, types.xml) or discussing DayZ modding, Enforce Script, or the Enfusion engine. Activate even if the user does not explicitly mention DayZ — if the code imports DayZ classes (PlayerBase, EntityAI, ItemBase, MissionServer), uses DayZ APIs (GetGame(), Class.CastTo(), ScriptRPC), or references DayZ patterns (modded class, CfgPatches, requiredAddons), this skill MUST be loaded. Covers 40+ critical gotchas, complete engine API across 20+ systems, mod architecture, RPC networking, GUI widgets, performance optimization, and professional patterns from COT, VPP, and Expansion mods. Without this skill, the agent WILL produce broken Enforce Script code.
bevy-ecs-patterns
laurigates/claude-plugins
Advanced Bevy ECS: complex queries, system scheduling, change detection, and performance tuning. Use when optimizing Bevy architecture or implementing complex game systems.
webpack-expert
duck4nh/antigravity-kit
Webpack build optimization expert with deep knowledge of configuration patterns, bundle analysis, code splitting, module federation, performance optimization, and plugin/loader ecosystem. Use PROACTIVELY for any Webpack bundling issues including complex optimizations, build performance, custom plugins/loaders, and modern architecture patterns. If a specialized expert is a better fit, I will recommend switching and stop.
caching-strategies
thibautbaissac/rails_ai_agents
>-
sentry-node-sdk
getsentry/sentry-for-claude
Full Sentry SDK setup for Node.js, Bun, and Deno. Use when asked to "add Sentry to Node.js", "add Sentry to Bun", "add Sentry to Deno", "install @sentry/node", "@sentry/bun", or "@sentry/deno", or configure error monitoring, tracing, logging, profiling, metrics, crons, or AI monitoring for server-side JavaScript/TypeScript runtimes.
api-client
profpowell/vanilla-breeze
Fetch API patterns with error handling, retry logic, and caching. Use when building API integrations, handling network failures, or implementing offline-first data fetching.
java-profiling
claude-dev-suite/claude-dev-suite
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syncfusion-vue-treegrid
syncfusion/vue-ui-components-skills
Implements Syncfusion Vue TreeGrid for hierarchical data with sorting, filtering, editing, exporting, paging, virtual scrolling, and advanced features. Supports configuration, CRUD, aggregates, templates, state persistence, and performance optimization in Vue applications.
nix-profile-manager
ypares/agent-skills
Expert guidance for agents to manage local Nix profiles for installing tools and dependencies. Covers flakes, profile management, package searching, and registry configuration.
csharp-linq
thebushidocollective/han
Use when lINQ query and method syntax, deferred execution, and performance optimization. Use when querying collections in C#.
syncfusion-maui-toolkit-spark-charts
syncfusion/maui-toolkit-ui-components-skills
Use this skill ALWAYS when the user needs to implement Syncfusion MAUI Spark Charts. Triggers on spark chart, sparkline, micro-chart, trend visualization, data visualization in small spaces, chart types (line, area, column, win/loss), markers, range bands, axis configuration, data point styling. Also use immediately for chart customization, performance optimization, marker configuration, data binding patterns, accessibility needs.
nstbrowser-ai-agent
nstbrowser/nstbrowser-ai-agent
Browser automation CLI for Nstbrowser profiles. Use when the user needs Nstbrowser profile management, temporary browsers, proxy-aware automation, or browser actions that must run through the Nstbrowser desktop client.
sql-pro
rmyndharis/antigravity-skills
Master modern SQL with cloud-native databases, OLTP/OLAP
nextjs
alexander-danilenko/cortex-ai-skills
Apply these opinionated Next.js conventions whenever writing or reviewing App Router code (14+): Server Components by default, where the 'use client' boundary belongs, the caching defaults that changed in Next 15, tag-based revalidation, treating Server Actions as public endpoints, the Metadata API, and next/image and next/font.
solid-cache-coder
majesticlabs-dev/majestic-marketplace
Use when configuring or working with Solid Cache for database-backed caching. Applies Rails 8 conventions, cache key design, expiration strategies, database setup, and performance tuning patterns.
runtime-skills
llama-farm/llamafarm
Universal Runtime best practices for PyTorch inference, Transformers models, and FastAPI serving. Covers device management, model loading, memory optimization, and performance tuning.
performance-optimization
rogervila/agent-skills
Guides agents to improve performance with measured bottleneck analysis, efficient algorithms, lower allocations, better I/O patterns, and benchmark-backed validation.
performance-tuning
noobygains/godmode
Use when performance is a concern - sluggish pages, slow queries, bloated bundles, high-latency APIs, or whenever someone says "optimize" or "make it faster
application-performance-performance-optimization
rmyndharis/antigravity-skills
Optimize end-to-end application performance with profiling, observability, and backend/frontend tuning. Use when coordinating performance optimization across the stack.
angular-best-practices-legacy
develite98/angular-best-practices
Angular 12-16 performance optimization guidelines with NgModules, RxJS patterns, and classic template syntax (*ngIf, *ngFor). Use when maintaining or working with pre-v17 Angular codebases. Triggers on tasks involving Angular components, services, modules, or performance improvements in legacy projects.
syncfusion-javascript-treegrid
syncfusion/javascript-ui-controls-skills
Implements Syncfusion Javascript TreeGrid for hierarchical data with sorting, filtering, editing, exporting, paging, virtual scrolling, and advanced features. Supports configuration, CRUD, aggregates, templates, state persistence, and performance optimization in Javascript applications.
android-serialization-offline-sync
krutikjain/android-agent-skills
Coordinate serialization, caching, conflict handling, and offline-first sync flows in Android apps.
sentry-nextjs-sdk
getsentry/agent-skills
Full Sentry SDK setup for Next.js. Use when asked to "add Sentry to Next.js", "install @sentry/nextjs", or configure error monitoring, tracing, session replay, logging, profiling, AI monitoring, or crons for Next.js applications. Supports Next.js 13+ with App Router and Pages Router.
typescript-type-expert
cin12211/orca-q
Advanced TypeScript type system specialist for complex generics, conditional types, template literals, type inference, performance optimization, and type-level programming. Use for intricate type system challenges, recursive types, brand types, utility type authoring, and type performance issues. Includes comprehensive coverage of 18 advanced type system error patterns.
build-optimization
nickcrew/claude-cortex
Build system optimization covering compilation, caching, incremental builds, and developer tooling. Use when improving build times, configuring CI pipelines, or designing developer tools.
docker-ops
0xdarkmatter/claude-mods
Docker containerization patterns, Dockerfile best practices, multi-stage builds, and Docker Compose. Use for: docker, Dockerfile, docker-compose, container, image, multi-stage build, docker build, docker run, .dockerignore, health check, distroless, scratch image, BuildKit, layer caching, container security.
database-optimizer
rmyndharis/antigravity-skills
Expert database optimizer specializing in modern performance
privacy-impact-assessment-review
sylphxai/skills
Run privacy impact assessments for new features, data collection, analytics, AI processing, profiling, vendors, retention, consent, legal basis, minimization, sensitive data, children/regulated users, DSAR, cross-border transfer, security controls, mitigations, launch gates, and record keeping. Use when product changes may affect personal data or user trust.
oracle
full-stack-skills/database-skills
Provides comprehensive guidance for Oracle database including SQL, PL/SQL, functions, performance tuning (AWR/ASH), backup (RMAN), Data Guard, and RAC. Use when the user asks about Oracle, needs to write Oracle SQL, work with PL/SQL, or manage Oracle databases.
perf
johnlindquist/claude
Performance profiling and optimization. Use for benchmarking code, analyzing performance, running Lighthouse audits, and finding hotspots.
performance-profiling
wojons/skills
Analyze system and application performance using Linux kernel-level tools (perf, ftrace, eBPF, SystemTap) and application-level profiling to identify bottlenecks and optimize performance
sentry-react-native-sdk
getsentry/agent-skills
Full Sentry SDK setup for React Native and Expo. Use when asked to "add Sentry to React Native", "install @sentry/react-native", "setup Sentry in Expo", or configure error monitoring, tracing, profiling, session replay, or logging for React Native applications. Supports Expo managed, Expo bare, and vanilla React Native.