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
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core-web-vitals
practicalswan/agent-skills
Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking. Use when asked to \"improve Core Web Vitals\", \"fix LCP\", \"reduce CLS\", \"optimize INP\", \"page experience optimization\", or \"fix layout shifts\".
web-api
nguyenvanchiens/my-skills
Build or maintain controller-based ASP.NET Core APIs when the project needs controller conventions, advanced model binding, validation extensions, OData, JsonPatch, or existing API patterns.
performance-tuning
0king0p/claude-skills
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database-optimizer
aratkruglik/claude-laravel
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database-optimizer
thienanthx/skill-web-design
Optimizes database queries and improves performance across PostgreSQL and MySQL systems. Use when investigating slow queries, analyzing execution plans, or optimizing database performance. Invoke for index design, query rewrites, configuration tuning, partitioning strategies, lock contention resolution.
database-optimizer
nkseth/copilot-dev-skills
Optimizes database queries and improves performance across PostgreSQL and MySQL systems. Use when investigating slow queries, analyzing execution plans, or optimizing database performance. Invoke for index design, query rewrites, configuration tuning, partitioning strategies, lock contention resolution.
database-optimizer
shalevamin/the-_ultimate_agents
Optimizes database queries and improves performance across PostgreSQL and MySQL systems. Use when investigating slow queries, analyzing execution plans, or optimizing database performance. Invoke for index design, query rewrites, configuration tuning, partitioning strategies, lock contention resolution.
frontend-developer
thien95tm/skill-claude
Expert Magento 2 frontend development specialist focusing on comprehensive frontend solutions. Masters layout XML, template development, JavaScript integration, responsive design, and performance optimization across all Magento frontend technologies.
frontend-patterns
shennawardana23/skillme
Framework-agnostic client-side performance architecture — route/component code splitting, list virtualization mechanics, hydration cost, and asset loading strategy. Use when a page feels slow to load or interact with, when deciding whether/how to split a bundle or lazy-load a component, when a long list janks while scrolling, or when triaging SSR hydration cost. Complements vue-nuxt-frontend-patterns (reactivity/SSR fetching) and frontend-ui-engineering (component/accessibility patterns) rather than repeating them.
performance
alizafarbati/opencode-agents-mcp
Expert performance engineer specializing in eBPF tracing, systems performance, GPU optimization, and petabyte-scale distributed system tuning.
performance
kid-sid/codex-spellbook
Use when diagnosing a slow endpoint, fixing N+1 queries, adding a caching layer, offloading CPU-bound work to threads, or defining a latency budget for a service.
performance-optimization
yiweiwan/skills
Use as a router only for broad performance tasks when the bottleneck is unknown. Prefer frontend-performance for frontend speed, backend-performance for server speed, and database-performance for SQL/database bottlenecks.
core-web-vitals
jgamaraalv/delivery-loop
Core Web Vitals reference for measuring, diagnosing, and improving LCP, INP, and CLS page performance against Google's thresholds
frontend-performance
yiweiwan/skills
Use only for frontend performance work: bundle size, Core Web Vitals, render performance, hydration, image optimization, network waterfalls, lazy loading, layout shift, and client-side responsiveness.
web
xoai/sage
Universal web development principles — accessibility (WCAG 2.2), performance (Core Web Vitals), security headers (OWASP), SEO, responsive design, error UX, and loading states. Framework-agnostic.
runtime-cache
openai/plugins
Vercel Runtime Cache API guidance — ephemeral per-region key-value cache with tag-based invalidation. Shared across Functions, Routing Middleware, and Builds. Use when implementing caching strategies beyond framework-level caching.
turborepo
openai/plugins
Turborepo expert guidance. Use when setting up or optimizing monorepo builds, configuring task caching, remote caching, parallel execution, or the --affected flag for incremental CI.
swr
openai/plugins
SWR data-fetching expert guidance. Use when building React apps with client-side data fetching, caching, revalidation, mutations, optimistic UI, pagination, or infinite loading using the SWR library.
scala-play
majk-p/scala-skills
Use this skill when working with Play Framework in Scala. Covers controllers, routing, JSON handling, form validation, database integration, custom filters, dependency injection, WebSocket handling, caching, error handling, and performance optimization. Trigger when the user mentions Play Framework, Play controllers, Play routes, or needs to build RESTful APIs or web applications with Scala and Play.
nextjs
xoai/sage
Next.js 14/15 App Router patterns — server components, data fetching, caching, server actions
javascript-expert
wesleyegberto/software-engineering-skills
Use when building JavaScript applications with modern ES2023+ features, async patterns, or Node.js development. Invoke for vanilla JavaScript, browser APIs, performance optimization, module systems.
rb:investigate
slbug/claude-ruby-grape-rails
Use when something is broken and the cause is unknown -- root-cause analysis for bugs, errors, and failures. NOT for performance tuning (use /rb:perf) or code flow tracing (use /rb:trace).
rails-caching
bastos/ruby-plugin-marketplace
Rails caching strategies including fragment caching, low-level caching with Rails.cache, cache keys, and conditional GET. Use when the user asks about caching performance or invalidation in Rails.
docker
tinh2/skills-hub-registry
Detect project stack and generate production-ready multi-stage Dockerfiles with compose services, .dockerignore, non-root users, health checks, layer caching, and optional dev hot-reload profiles
gemini-api
jamkris/everything-gemini-code
Google Gemini API patterns for Python and TypeScript. Covers content generation, streaming, tool use (function calling), vision, system instructions, context caching, batch requests, and agent workflows. Use when building applications with the Gemini API or Google Generative AI SDKs.
pandas-pro
andikarachman/data-science-plugin
Pandas API patterns for DataFrame operations, data cleaning, aggregation, merging, and performance optimization. Use when generating pandas code for data loading, manipulation, or profiling in /ds:eda, /ds:preprocess, or /ds:experiment.
polars
andikarachman/data-science-plugin
Polars expression API for high-performance DataFrame operations, lazy evaluation, joins, aggregations, and I/O. Use as a parallel alternative to pandas-pro when working with large datasets or generating Polars code for data loading, manipulation, or profiling in /ds:eda, /ds:preprocess, or /ds:experiment.
pandas-pro
agentic-assets/agent-skills
Use when working with pandas DataFrames, data cleaning, aggregation, merging, or time series analysis. Invoke for data manipulation, missing value handling, groupby operations, or performance optimization.
spark
nimadorostkar/claude-skills-collection
Use when building distributed data pipelines with Apache Spark. Covers partitioning, shuffles, skew, joins, caching, and reading the Spark UI to find why a job is slow.
agency-godot-shader-developer
augustoheiss/logicdefense
Godot 4 visual effects specialist - Masters the Godot Shading Language (GLSL-like), VisualShader editor, CanvasItem and Spatial shaders, post-processing, and performance optimization for 2D/3D effects
webgl-expert
tanepiper/teskooano
Expert guide for WebGL API development including 3D graphics, shaders (GLSL), rendering pipeline, textures, buffers, performance optimization, and canvas rendering. Use when working with WebGL, 3D graphics, canvas rendering, shaders, GPU programming, or when user mentions WebGL, OpenGL ES, GLSL, vertex shaders, fragment shaders, texture mapping, or 3D web graphics.
aem-architect
paialex/ai-skills-bank
Comprehensive AEM (Adobe Experience Manager) architecture design skill for enterprise implementations. Use this skill when building AEM components, designing content architecture, configuring Dispatcher caching, creating dialogs with Granite UI, implementing Sling Models, OSGi services, servlets, or ClientLibs. Covers component development, performance optimization, caching strategies, security best practices, and CI/CD with Cloud Manager. Supports both AEM 6.5 and AEM as a Cloud Service. Also creates architecture diagrams (Mermaid, ASCII) for AEM systems. Triggers on requests for AEM development guidance, component creation, dialog design, caching configuration, architectural decisions, or diagram/visualization requests for AEM projects.
bio-data-interpreter
yiyabo/gagent
Bioinformatics data interpretation skill for genomics, proteomics, metagenomics, and phage analysis. Covers sequence analysis, annotation, assembly quality, phylogenetics, and functional profiling. Use when analyzing biological data, interpreting experimental results, or explaining bioinformatics outputs.
visidata
cbrunnkvist/agent-skills
Use VisiData CLI (`vd`) for terminal dataset exploration, cleanup, conversion, joins, profiling, exports, and `.vdj` replay workflows. Trigger for unknown/messy CSV, TSV, JSONL, XLSX, SQLite, Parquet, GeoJSON, fixed-width, or HTML table data. Not for VisiData Python API/plugin development.
svelte
abayomijohn273/frontend_standard_skills
Frontend engineering standards for Svelte 5 (runes) and SvelteKit projects — $state/$derived/$props reactivity, file-based routing and load functions, WCAG 2.1 AA accessibility (including Svelte's built-in compiler a11y warnings), and Core Web Vitals performance (LCP, CLS, INP) per https://pagespeed.web.dev/. Use this skill whenever setting up contributor rules for a Svelte or SvelteKit project, writing or reviewing `.svelte` components, deciding between `$state`/`$derived`/stores, auditing a SvelteKit app's PageSpeed/Lighthouse score, or generating a CLAUDE.md/.cursor/AGENTS.md rules file for a Svelte codebase.
performance-optimization
asktinnguyen/vesper-team-skills
Optimizes application performance. Use when performance requirements exist, when you suspect performance regressions, or when Core Web Vitals or load times need improvement. Use when profiling reveals bottlenecks that need fixing.
performance-optimization
idoforgod/agent-skills
Optimizes application performance. Use when performance requirements exist, when you suspect performance regressions, or when Core Web Vitals or load times need improvement. Use when profiling reveals bottlenecks that need fixing.
performance-optimization
jerb78/agent-skills
Optimizes application performance. Use when performance requirements exist, when you suspect performance regressions, or when Core Web Vitals or load times need improvement. Use when profiling reveals bottlenecks that need fixing.
performance-optimization
jeygen-jj/agent-skills
Optimizes application performance. Use when performance requirements exist, when you suspect performance regressions, or when Core Web Vitals or load times need improvement. Use when profiling reveals bottlenecks that need fixing.
performance-optimization
timblazing/skills
Optimizes application performance. Use when performance requirements exist, when you suspect performance regressions, or when Core Web Vitals or load times need improvement. Use when profiling reveals bottlenecks that need fixing.
performance-optimization
eliranabu/schoolclaudeskills
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performance-optimization
jankneumann/agentic-coding-tools
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core-web-vitals
isloverhatwhite/web-quality-skills
Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking. Use when asked to "improve Core Web Vitals", "fix LCP", "reduce CLS", "optimize INP", "page experience optimization", or "fix layout shifts".
performance-optimization
trevoredris/fellowship-of-the-workflows
Analyze code for performance bottlenecks including N+1 queries, algorithmic complexity, memory leaks, caching gaps, bundle size issues, and database query optimization. Triggered by: slow query, performance issue, N+1, memory leak, optimize this, bundle size, cache miss, profiling, this is slow, latency. Produces a prioritized performance report. Use when reviewing PRs for performance impact or auditing existing code.
application-performance-performance-optimization
xfstudio/skills
Optimize end-to-end application performance with profiling, observability, and backend/frontend tuning. Use when coordinating performance optimization across the stack.
caching-strategies
devitbetter/software-engineering-discipline
How to use caches without their cost — placement, read and write strategies, invalidation, stampede protection, eviction policies, consistency models, and the antipatterns that turn a cache from a latency optimization into a hidden source of truth. Use this skill whenever the task involves adding or sizing a cache, choosing TTLs, designing invalidation, debugging a stale-read or stampede problem, choosing between Redis and Memcached, evaluating HTTP cache headers, or asking \"is this cache earning its keep.\" Use it when reviewing code that introduces caching, when designing a system that needs to scale reads, and when judging whether a slow query should be cached or fixed. Built on RFC 9111 (HTTP Caching), the AWS Builders' Library, the Vattani et al. probabilistic stampede paper (VLDB 2015), DHH on key-based expiration, the Karger consistent-hashing paper (STOC 1997), and the modern eviction literature (TinyLFU, S3-FIFO).
caching
cardinalconseils/claude-starter
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caching-strategist
dudedesi12/skills
Use this skill whenever the user mentions caching, cache, Redis, Upstash, cache invalidation, stale data, stale-while-revalidate, ISR strategy, CDN caching, edge caching, cache warming, cache stampede, thundering herd, 'data is stale', 'cache is wrong', 'when to cache', cache-control headers, TTL, cache busting, multi-layer cache, 'my data is outdated', or ANY caching strategy/design task — even if they don't explicitly say 'cache'. This skill designs coherent caching strategies across all layers.
core-web-vitals
frankxai/arcanea
Measure and hold a real performance budget on a web page — LCP, INP, CLS, bundle weight, font and image loading. Use when a change touches images, fonts, above-the-fold markup, client components, third-party scripts, or any list that can grow; when a page feels slow; or before shipping a new landing page or hero. Produces measured numbers from Lighthouse or the build output, never estimates. Also states honestly when measurement is impossible in the current environment instead of guessing.
core-web-vitals
dallay/agents-skills
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caching-strategies
0motionguy/gicm
Multi-level caching, cache invalidation, L1/L2/L3 cache hierarchies, and cache coherence.
caching-strategies
marquesfelip/agents-and-skills
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caching
shreyam1008/shre-skills
Cache correctly across every layer — HTTP/Cache-Control, CDN, browser, service worker, and app/query caches. Use when setting cache headers, deploying static assets, designing API freshness, debugging stale content, or planning invalidation.
cache-strategy
wellux/claude-code-deprecated
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hook-profile
kelsi-andrewss/claude-multi-agent-pipeline
Switch the active hook profile (minimal, standard, strict) or show the current one. Use when the user says "/hook-profile", "/hook-profile strict", "/hook-profile minimal", "/hook-profile standard", "change hook profile", or "show hook profile".
core-web-vitals
help-me-test/free-qa-skills
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core-web-vitals
shennawardana23/skillme
Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking. Use when asked to "improve Core Web Vitals", "fix LCP", "reduce CLS", "optimize INP", "page experience optimization", or "fix layout shifts".
core-web-vitals
4gentic/obelus
Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking. Use when asked to "improve Core Web Vitals", "fix LCP", "reduce CLS", "optimize INP", "page experience optimization", or "fix layout shifts".
ai-core-web-vitals
skillsaiagent/aiskills
Core Web Vitals 诊断助手适合technical、产品、市场营销、software在用户提出“页面速度拖转化吗”这类问题，需要快速拆解目标、判断重点并形成可执行结果时使用，帮助基于输入材料生成问题归因、服务改进建议、SOP …
webperf-core-web-vitals
yeomanye/old-skills
Intelligent Core Web Vitals analysis with automated workflows and decision trees. Measures LCP, CLS, INP with guided debugging that automatically determines follow-up analysis based on results. Includes workflows for LCP deep dive (5 phases), CLS investigation (loading vs interaction), INP debugging (latency breakdown + attribution), and cross-skill integration with loading, interaction, and media skills. Use when the user asks about Core Web Vitals, LCP optimization, layout shifts, or interaction responsiveness. Compatible with Chrome DevTools MCP.