Development · Web performance

Scans React code for lint, accessibility, bundle size and architecture issues, reports a health score and checks that changes do not lower it.

makeplane/plane

Reviews frontend changes under `web/` or `packages/dify-ui/` for concrete defects and broken project contracts, using routed rule packs and a severity scale for findings.

langgenius/dify

Guidelines for React 18 and TypeScript apps covering Suspense data fetching, lazy loading, feature folders, MUI v7 styling, TanStack Router and performance.

diet103/claude-code-infrastructure-showcase

Analyzes Chrome or Electron DevTools Performance trace exports with Python scripts to find where render time actually goes, without opening DevTools.

keybase/client

Debug and verification workflow for runtime-bundle and module-resolution regressions.

vercel/next.js

GPU frame debugging with RenderDoc via rdc-cli. An agent skill from rudybear/renderdoc-skill.

rudybear/renderdoc-skill

Author a new PostHog browser extension, or port a posthog-js v1 extension, against the @posthog/browser-common Client/Extension contract.

PostHog/posthog-js

JPA/Hibernate patterns and common pitfalls (N+1, lazy loading, transactions, queries).

decebals/claude-code-java

Performance profiling principles. An agent skill from xenitV1/Antigravity-Workflows.

xenitV1/Antigravity-Workflows

React performance optimization guidelines from Vercel Engineering (vercel-labs/agent-skills).

ryokun6/ryos

Nuxt 4 app patterns for hydration safety, performance, route rules, lazy loading, and SSR-safe data fetching with useFetch and useAsyncData.

affaan-m/ECC

Rules for writing a Handsontable cell renderer: a pure function that calls baseRenderer first, sets text safely and stays cheap because it runs for every visible cell.

handsontable/handsontable

Guide to Handsontable's performance-tests package: Playwright scenarios measured through CDP traces and compared against golden baselines taken from the develop branch.

handsontable/handsontable

React performance optimization guidelines. An agent skill from poteto/noodle.

poteto/noodle

A skill your agent uses when building or refactoring Angular applications — choosing between signals, RxJS, and NgRx for state, configuring routing with guards and lazy loading, optimizing change…

kid-sid/claude-spellbook

React and Next.js performance optimization patterns adapted from Vercel Engineering's React Best Practices (https://github.com/vercel-labs/agent-skills).

affaan-m/ECC

React performance optimization guidelines from Vercel Engineering.

gambitph/Stackable

Apply modern web development best practices for security, compatibility, and code quality.

tech-leads-club/agent-skills

Scaffolds and extends Angular standalone feature MODULES under src/app/modules/{name} using Clean Architecture layering (presentation/application/core/infrastructure), a self-registering module…

fmflurry/settings-opencode

React and Next.js performance optimization from Vercel Engineering.

Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI

Systematic performance profiling for Node.js, Python, and Go applications.

alirezarezvani/claude-skills

TanStack Router file-based routing patterns including route creation, navigation, loaders, type-safe routing, and lazy loading.

blencorp/claude-code-kit

Angular performance optimization and best practices guide. An agent skill from aiskillstore/marketplace.

aiskillstore/marketplace

A skill your agent uses when auditing slow page loads, heavy assets, or rendering delays related to Provide source maps for production debugging.

thedaviddias/Front-End-Checklist

A skill your agent uses when the user says 'performance audit', 'why is it slow', 'optimize performance', 'page speed', 'Core Web Vitals', 'lighthouse', 'load time', or needs to diagnose and fix…

cwinvestments/memstack

Cloudflare Workers performance optimization with CPU, memory, caching, bundle size.

secondsky/claude-skills

Establish evidence-based WebContainer capacity budgets for boot concurrency, mounted files, dependency installs, processes, previews, memory symptoms, and browser support.

jeremylongshore/tons-of-skills-marketplace

Guided journey from a working codebase grown slow and tangled to one measurably fast, cleanly bounded, and readable.

wondelai/skills

React and Next.js performance playbook distilled from Vercel Engineering guidance.

majiayu000/spellbook

Application performance tuning, JVM optimization, database query tuning, Vaadin UI performance

Hack23/cia

A skill your agent uses when planning capacity, redundancy, graceful degradation, or recovery for systems that must keep working under stress — performance budgets, dependency failure handling…

hashgraph-online/awesome-codex-plugins

Use this when reviewing AEM Edge Delivery Services (EDS, Franklin, Helix) code, either self-review at the end of development before opening a PR, or reviewing an existing pull request.

adobe/skills

On-demand performance and optimization analysis. An agent skill from MadAppGang/claude-code.

MadAppGang/claude-code

Optimize React rendering, bundle size, and data flow with profiler-led decisions.

HoangNguyen0403/agent-skills-standard