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
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core-web-vitals-reference
0gam24/calculatorhost
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web-vitals
wellux/claude-code-deprecated
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web-api
azeznassar/dotnet-optimizely-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. USE FOR: working on controller-based APIs in ASP.NET Core; needing controller-specific extensibility or conventions; migrating or reviewing existing API controllers and filters. DO NOT USE FOR: unrelated stacks; generic tasks that do not need this specific guidance. INVOKES: inspect the repository context, edit targeted files, and run relevant build, test, lint, or validation commands when changes are made.
database-performance-tuning
fcsouza/agent-skills
Diagnose and fix slow databases the way a DBA does — measure first, read the plan, then change one thing. Use this skill whenever a query, endpoint, job or report is slow, times out, or got slower after a deploy; whenever someone asks about indexes (missing, unused, duplicate, composite order, partial, covering, GIN/BRIN), EXPLAIN or query plans, seq scans, N+1 queries, slow pagination, table or index bloat, autovacuum, VACUUM, ANALYZE, stale statistics, connection or lock pileups, high CPU/IO on the database, partitioning, or a migration that locked a table. Also trigger on Portuguese phrasings: 'query lenta', 'consulta lenta', 'banco lento', 'timeout no banco', 'falta índice', 'criar índice', 'travou a tabela', 'lock', 'vacuum', 'plano de execução'. Postgres is the core; MySQL/InnoDB is covered in references/mysql.md. Use it even when the user just says 'this page is slow' and the data comes from a database — the first job of this skill is to find out whether the database is actually the problem.
performance-tuning
ivnad95/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
database-administrator
joaroo/awesome-agnostic-skills
Use this skill when optimizing database performance, implementing high-availability architectures, setting up disaster recovery, or managing database infrastructure for production systems.
database-optimizer
hosseinmirzapur/opencode-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
yo-steven/claude-skills-exploration-20260522
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
zroman88/claude-skills-to-cursor
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
hk-hub/agentskills
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
krypton-kr36/claude-code-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
ranbot-ai/awesome-skills
Expert database optimizer specializing in modern performance tuning, query optimization, and scalable architectures.
database-performance
ianbyte-byte/pernavo
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dbt-performance-tuning
yshah-1108/dbt-navigator
Use when a model is slow to build, warehouse compute cost is rising, build times are regressing, or a query scans far more data than it needs. Covers diagnosing the actual slow node from run artifacts, reducing scanned bytes, predicate form and pushdown, join and aggregation rewrites, spill and memory, engine-specific clustering and partitioning, caching effects on benchmarks, and converting a table to incremental.
Postgresql Optimization
mayurrathi/awesome-agent-skills
PostgreSQL database optimization workflow for query tuning, indexing strategies, performance analysis, and production database management.
postgresql-optimization
aratkruglik/komunalka-laravel-api
PostgreSQL database optimization workflow for query tuning, indexing strategies, performance analysis, and production database management.\n\nУкраїнською: Оптимізуй PostgreSQL, тюнінг запитів, стратегії індексації, аналіз продуктивності, EXPLAIN ANALYZE, план запиту, повільний запит, vacuum, конфігурація бази, профілювання.
frontend-performance
shreyas-makes/agent-skills
Improve frontend performance. Use for loading speed, rendering, animation jank, images, hydration, or bundle size. Not for backend performance or visual polish.
frontend-performance
martinolivero/saas-builder
This skill should be used when a frontend feels slow, fails Core Web Vitals, has a large bundle, or needs performance optimization. Trigger phrases include "make it faster", "improve performance", "Core Web Vitals", "LCP", "INP", "CLS", "reduce bundle size", "code splitting", "lazy load", "it's slow to load", "optimize images", "bundle too big", "Lighthouse score". It targets the real Core Web Vitals thresholds with stack-specific fixes for React + Vite + Vercel.
frontend-performance
nickbevers/claude-rules
Audit and optimize frontend performance for React, Preact, and Astro projects. Triggers on "performance audit", "optimize performance", "slow page", "core web vitals", "bundle size", "lighthouse", "performance budget".
performance-optimization
gfcampos1/my-skills
Performance optimization skill. Use when investigating slowness, optimizing an existing feature, or implementing a performance-sensitive component. Covers profiling strategy (DevTools, React Profiler, clinic.js, EXPLAIN ANALYZE), frontend optimization (bundle size, lazy loading, memoization, Core Web Vitals, list virtualization), backend optimization (caching, N+1 queries, connection pooling, async patterns), and database optimization (indexes, query plans, Prisma-specific patterns). Trigger phrases: 'performance', 'lento', 'slow', 'otimização', 'optimize', 'bundle size', 'lazy load', 'cache', 'N+1', 'query lenta', 'slow query', 'Core Web Vitals', 'LCP', 'FCP', 'TTI', 'render', 'memória', 'memory', 'index', 'EXPLAIN', 'profiling', 'bottleneck', 'gargalo', 'latência', 'latency', 'throughput'.
performance
browserless/claude-plugin
Run a Lighthouse performance audit on a webpage and get scores for accessibility, best practices, performance, PWA, and SEO. Use when the user wants to audit a website's performance, check accessibility scores, run Lighthouse, or analyze page speed and SEO.
performance
ec-solutions-software/trackbee-claude-plugin
Investigate ad-account performance — surface what changed across campaigns and ads, with the supporting numbers.
performance
1ambda/dataops-platform
Performance optimization and bottleneck detection. Identifies N+1 queries, memory leaks, async issues, and caching opportunities. Use when investigating slow operations, optimizing response times, or detecting performance issues.
performance
cardinalconseils/claude-starter
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frontend-design
daianepepes-lab/claude-skills
Design and implement professional, accessible, and performant frontend interfaces. Use when asked to build UI components, improve design, create layouts, implement design systems, or optimize frontend performance.
caching-strategies
vanara-agents/skills
Deep reference for caching — what to cache, cache-aside vs read/write-through/write-behind, TTLs with jitter, eviction (LRU/LFU/FIFO), invalidation, and surviving stampedes (thundering herd / dogpile). Worked examples and a runnable jitter check.
caching-strategies
kdunc11/rails_ai_agents
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ai-caching-strategy
winbda/claude-skills-collection
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database-optimizer
ngxtm/devkit
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.
100x-profile
vika2603/100x-cli-skill
Set up and inspect 100x CLI credential profiles, choose the default profile, and select output modes. Use before private account workflows or when the user asks which 100x profile is active.
postgresql-optimization
tmolavi/mcp-agent-skills-hub
PostgreSQL database optimization workflow for query tuning, indexing strategies, performance analysis, and production database management.
frontend-rules
nadav011/apex-skills
Use when user wants to Frontend rules - Next.js 16.1, React 19, Tailwind v4.2, caching, performance, design system, state/forms, accessibility, SEO
performance-audit
serkan-ozal/browser-devtools-claude
Analyze web page performance using Web Vitals and network timing metrics. Use when optimizing load times, checking Core Web Vitals, or investigating slow pages.
performance
gabrielbauman/skills
Optimize measured hotspots against a stated target instead of guessing: profile before changing anything, set a numeric goal so you know when to stop, take structural wins (N+1 queries, missing indexes, quadratic loops) before micro-optimizations, change one thing at a time and re-measure, and treat caching as a last resort. Use whenever something is slow, when asked to optimize, speed up, or profile code, when reviewing a change justified by performance, when tempted to add a cache, or when a latency, throughput, memory, or cost target is in play.
postgresql-optimization
dbillionaer/wholesaile
PostgreSQL database optimization workflow for query tuning, indexing strategies, performance analysis, and production database management.
frontend-architect
iamjcabalejo/payoys-cursor-sub-agents
Skillset for frontend design and implementation. Use when working on UI, components, accessibility, or client-side code; load referenced skills when their context matches the task.
data-fetching
microsoft/fabric-apps-analytic-templates
Fetch Power BI data in React components using the useSemanticModelQuery hook. Query results, caching, error handling, connection aliases.
android-performance
openai/plugins
Gather and interpret Android performance evidence on an adb target using Simpleperf CPU profiles, Perfetto or Compose traces, gfxinfo frame data, dumpsys meminfo snapshots, Java heap dumps, and native allocation traces. Use when asked to profile an Android app flow, find CPU-heavy functions, diagnose jank, capture startup or frame timing evidence, compare before/after performance, explain what code is taking time, or gather memory/leak profiling artifacts.
seo-audit
moizibnyousaf/marketing-cli
When the user wants to audit, review, or diagnose SEO issues, plan site architecture, or implement schema markup. Use when someone says 'SEO audit', 'technical SEO', 'site architecture', 'schema markup', 'internal linking', 'why isn't my site ranking', 'site health check', 'crawl issues', 'fix my SEO', 'my traffic dropped', 'rankings fell', or 'site not ranking'. Also trigger when someone wants to plan URL structure, design navigation, add structured data, or review any website for search performance. Three modes: Full Audit (comprehensive health check), Architecture (URL structure and internal linking), Schema (JSON-LD structured data). Covers crawlability, indexation, Core Web Vitals, and on-page factors.
databricks-table-properties
databricks-solutions/vibe-coding-workshop-template
Provides standard TBLPROPERTIES and metadata patterns for Unity Catalog Delta tables across Bronze, Silver, and Gold medallion layers. Ensures governance compliance, performance optimization, and proper metadata tagging for all table creation operations. Covers required TBLPROPERTIES by layer (Bronze, Silver DLT, Gold), mandatory CLUSTER BY AUTO configuration, Change Data Feed (CDF) enablement, auto-optimize settings, table and column comment patterns (LLM-friendly for Bronze/Silver, dual-purpose for Gold), domain values, data classification tags, and validation checklists. Use when creating Delta tables, configuring table properties, enabling CDF, setting up auto-optimize, or ensuring governance metadata consistency. Critical for preventing missing properties, incorrect clustering configurations, and governance compliance issues.
lakehouse-monitoring-comprehensive
databricks-solutions/vibe-coding-workshop-template
Comprehensive guide for Databricks Lakehouse Monitoring (Data Profiling) with quick-start workflow (2 hours), fill-in-the-blank requirements template, concrete fact/dimension monitor examples, and complete deployment patterns. Uses the new Data Quality API (`databricks.sdk.service.dataquality`). Use when setting up Lakehouse Monitoring for Gold layer tables, creating custom business metrics, designing monitoring strategy, querying monitoring tables for dashboards, or troubleshooting monitor initialization failures. Includes setup patterns with graceful degradation, custom metric syntax (AGGREGATE, DERIVED, DRIFT), table-level business KPIs with `input_columns=[":table"]`, query patterns for dashboards, async operations handling, monitor cleanup, Genie documentation integration, and production deployment workflow.
aspnet-boilerplate-modules
afonsoft/eaf
Expert guidance for working with ASP.NET Boilerplate (ABP) framework modules. Covers module definition, lifecycle methods, dependencies, configuration, and usage of common ABP modules including dependency injection, session, caching, logging, settings, entities, repositories, application services, authorization, multi-tenancy, and more. Use this skill when creating ABP modules, configuring module dependencies, understanding ABP module system, or troubleshooting module initialization issues. Do NOT use for general .NET development, non-ABP projects, or EAF-specific middleware modules.
aspnet-boilerplate-development
afonsoft/eaf
Expert guidance for ASP.NET Boilerplate (ABP) and .NET 10.0 development for the EAF (Enterprise Application Foundation) middleware modules. Covers N-Layer Architecture, dependency injection with Castle Windsor, multi-tenancy, authorization, caching, background jobs, Entity Framework Core, EAF-specific middleware modules (Serilog, KeyVault, OpenTelemetry, SQL Server/SQLite cache), and ABP best practices. Use this skill when developing EAF middleware modules, working with ABP framework, implementing repositories/application services, or troubleshooting ABP-related issues. Do NOT use for general .NET development, non-ABP projects, or frontend development.
cpp-pro
regtransfers/agency-agents-mcp
Write idiomatic C++ code with modern features, RAII, smart pointers, and STL algorithms. Handles templates, move semantics, and performance optimization.
nextjs
yldgio/anomalyco
Next.js 14+ App Router patterns, Server Components, API routes, and performance optimization
tanstack-query
oakoss/open-saas-kit
Use TanStack Query for data fetching and caching. Use when implementing queries, mutations, infinite queries, or cache invalidation.
benchmark
nguyenyou/scalex
Run scalex performance benchmarks, profiling, and timing analysis. Use this skill whenever the user asks to benchmark scalex, measure performance, profile index/query times, compare before/after performance of a change, investigate bottlenecks, or mentions \"benchmark\", \"perf\", \"how fast\", \"timing\", \"hyperfine\", \"profile\", \"flame graph\", \"profiling\", \"--timings\", \"slow\", \"bottleneck\", \"regression\", \"memory\", \"heap\", \"GC\", \"allocation\". Also use proactively after implementing performance improvements to verify gains. Covers 6 layers: built-in --timings, hyperfine benchmarks, async-profiler flame graphs, JFR recording, microbenchmarks, and memory profiling.
javascript-pro
liyin2015/claude-skills-2
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.
javascript-pro
coopyrightdmin/claude-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.
php-modern-practices
coppermare/skillverse
Apply modern PHP 8+ best practices including typed properties, attributes, enums, and performance optimization. Use for building modern PHP applications, APIs, and frameworks.
nextjs
itsramaa/agents-skills
Build Next.js 15 apps with App Router, server components, caching, auth, and production patterns. Use when working on Next.js projects.
frontend-svelte
diegosouzapw/awesome-omni-skill
Technical knowledge for SvelteKit 5 development. Build reactive applications with Svelte's compile-time magic. Expert in SvelteKit, stores, and reactive patterns. Activate for Svelte development, performance optimization, or modern web apps. This skill provides MCP usage patterns and Svelte 5 conventions. Use when implementing Svelte components or SvelteKit routes.
toolforge-python
fuzheado/wikipedia-ai-skills
Deploy Python web services on Wikimedia Toolforge — Flask (WSGI) and FastAPI (ASGI), gunicorn/uvicorn, Build Service and traditional Kubernetes backends, virtual environments, pip caching, PORT configuration, static files, logging, and common pitfalls
docker
imminh123/agent-skills
Docker and Docker Compose best practices — use when writing Dockerfiles, composing multi-service apps, or optimizing container builds. Covers layer caching, multi-stage builds, security hardening, and local dev patterns.
pandas-pro
als-rsoxs/resonance
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.
koan-vector-migration
sylin-org/koan-framework
Vector export/import, embedding caching, provider migration
clickhouse-streaming
dandedotdev/dotfiles
Use when ingesting continuous data streams from Kafka, RabbitMQ, or Kinesis into ClickHouse. Covers backpressure handling, exactly-once semantics, stream processing patterns, and performance optimization. NOT for database replication (see clickhouse-cdc) or batch ETL (see clickhouse-patterns).
profile
anantys-oss/koan
Queue a performance profiling mission for a managed project
data-profile
dms1996/analyst-skills
Statistical data profiling report with completeness, uniqueness, distribution, and anomaly detection. Use when someone needs to understand a dataset, data quality assessment, data audit, or data exploration before analysis.
analyst-profiler
kelly-0111/research-skills
Sell-side analyst profiling and tracking workflow for investment research. Use when Codex needs to structure sell-side research calls, evaluate analyst quality from sourced evidence, distinguish momentum fast-reaction analysts from deep-research analysts, generate analyst scorecards, or maintain a continuous analyst tracking database.