Production-grade Claude Code skills verified against official specifications. Zero dependencies. Complete domain coverage.
Skill Claude CodeCodex
OWASP API Security Top 10 (2023) with production Next.js App Router code — access control, authentication, input validation, rate limiting, security headers, data exposure, supply chain, SSRF, and AI tools on those APIs.
Skill Claude CodeCodex
Build, review, or migrate Next.js App Router applications with version-aware component boundaries, data fetching, caching, routing, and mutations. Use for App Router implementation and architecture tasks, not generic React optimization, copy-only edits, or Pages Router fixes that do not involve migration.
Skill Claude CodeCodex
Product management and marketing strategy — positioning, discovery, go-to-market, prioritization, metrics, copywriting, and artifact generation. Verified against Cagan (SVPG), Dunford, Torres, Reforge, JTBD, and OWASP-grade rigor applied to PM/PMM decisions.
Skill Claude CodeCodex
Use when optimizing React component rendering, fixing Core Web Vitals (LCP, INP, CLS), reducing bundle size, diagnosing re-renders, a store update under a large tree, code splitting, memoization decisions, Server Component patterns, or profiling React apps. Covers React 19, React Compiler, useTransition…
Skill Claude CodeCodex
Use when adding metadata, creating sitemaps, generating robots.txt, implementing structured data (JSON-LD), optimizing for search engines, building OG images, creating llms.txt for AI search engines, or fixing SEO issues in Next.js applications. Covers Google's official guidance, GEO (Generative Engine Optimization)…
Skill Claude CodeCodex
Use when writing or reviewing UI text — buttons, error messages, empty states, onboarding, confirmation dialogs, notifications, tooltips, labels, and any user-facing copy in React/Next.js components. Covers voice and tone calibration, microcopy patterns, copy auditing, and refactoring existing copy for consistency and…
Skill Claude CodeCodex
WCAG 2.2 Level AA for web UI. Use when the task is accessibility, contrast, ARIA, keyboard access, focus, screen readers, alt text, or an accessibility audit. Do not use for styling, performance, or copy that is not an accessibility fix.
Skill Claude CodeCodex
Use when an SPA is slow because of the main thread, frame time, or memory: Web Workers, OffscreenCanvas, scheduler.yield, virtualized or windowed rendering, canvas and DOM editors, image swaps, flicker, blank frames, live updates, or a performance harness. Not React re-renders, bundles, or Server Components (see…
Skill Claude CodeCodex
Rewrites a thin coding prompt into a deep one before it runs: same scope, plus the raw material to start from, the tools an expert would use, an existing file to copy, and a proof a third party can check. Covers refactoring, performance, UI, UX, API, frontend, debugging, testing, security, and accessibility. Use when…
Skill Claude CodeCodex
Makes TypeScript catch more bugs at compile time on TS 6 and 7: tsconfig flags past strict, narrowing and discriminated unions, exhaustive switches, generics and inference (satisfies, const type parameters, NoInfer), utility, mapped, conditional, and template literal types, branded types, unknown at data edges…
Skill Claude CodeCodex
Writes, reviews, and debugs WebGPU and WGSL code: adapter and device setup, feature detection and WebGL2 fallback, buffers and struct alignment, textures, bind groups, pipelines, depth, MSAA, compute shaders, the canvas frame loop, React integration, device loss, error scopes, GPU timing, and testing. Use when code…
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: