Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/LeahyCC/claude-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/plugins/leahycc/claude-skills/marketplace)<a href="https://agentmods.dev/plugins/leahycc/claude-skills/marketplace"><img src="https://agentmods.dev/badge/plugins/leahycc/claude-skills/marketplace/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/plugins/leahycc/claude-skills/marketplace"><img src="https://agentmods.dev/badge/plugins/leahycc/claude-skills/marketplace.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade A, and why
claude-skills marketplace scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.
{
"schema_version": "1.0",
"skills": [
{
"name": "wcag-accessibility",
"display_name": "WCAG 2.2 Accessibility",
"description": "Complete WCAG 2.2 Level AA compliance guidance — all 50 success criteria covered across 11 resource files with production code examples",
"version": "1.0.0",
"categories": ["accessibility", "web-development", "compliance", "quality"],
"criteria_covered": 50,
"criteria_total": 50,
"resource_files": 11,
"dependencies": "none",
"verified_against": "W3C WCAG 2.2 Recommendation (October 2023)",
"install": "npx skills add LeahyCC/claude-skills@wcag-accessibility"
},
{
"name": "react-performance",
"display_name": "React Performance",
"description": "Measurement-first React performance optimization — profiling, Core Web Vitals, rendering, bundle size, React Compiler, Server Components, virtualization",
"version": "1.0.0",
"categories": ["performance", "react", "web-development", "optimization"],
"resource_files": 8,
"dependencies": "none",
"verified_against": "React docs (react.dev), Web Vitals specification (web.dev)",
"install": "npx skills add LeahyCC/claude-skills@react-performance"
},
{
"name": "seo",
"display_name": "SEO & GEO",
"description": "Production-ready SEO and GEO for Next.js — metadata, sitemaps, structured data, OG images, llms.txt, AI crawler management, and Google's actual guidance (not myths)",
"version": "1.0.0",
"categories": ["seo", "web-development", "nextjs", "marketing"],
"resource_files": 6,
"dependencies": "none",
"verified_against": "Google SEO Starter Guide, Google Structured Data docs, Next.js Metadata API, Web Vitals spec, llmstxt.org",
"install": "npx skills add LeahyCC/claude-skills@seo"
},
{
"name": "api-security",
"display_name": "API Security (OWASP)",
"description": "OWASP API Security Top The plugins it lists here
This marketplace lists 1 plugin kept in the same repository. Each has its own page, its own measurements and its own install command.
What ships with it
1 file beside marketplace.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 74 lines scan A e22ad3c60eff
claude-skills marketplace is a plugin published in the GitHub repository LeahyCC/claude-skills (3 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other plugins, from other repositories
wes-bos-sick-picks
Research-first workflow for building modern, accessible frontend UI components in the spirit of Wes Bos. Researches pitfalls and platform capabilities before planning, designs for WCAG accessibility with modern web standards, then verifies the approach against Wes Bos on X plus trusted sources (MDN, web.dev…
rad-chrome-extension
MV3 Chrome extension development standards (WXT, React, TypeScript) with two pure-stdlib Python validators that catch what LLM eyeballing misses. Skills cover architecture, MV3 security (CSP, remote code ban, content script isolation), permission minimization and CWS compliance, typed messaging, storage selection…
motionspec
Verified web motion for AI-built sites: write a MotionSpec JSON spec, validate it against a strict schema, and compile deterministic GSAP/CSS with reduced-motion support and performance budgets enforced by construction. Reports WCAG 2.2.2 pause-path candidates (reduced-motion guard = 2.3.3, AAA). Includes a…
ui-ux-design-pro
World-class, one-stop design intelligence for coding agents across two tracks: interfaces (web/apps, components, design systems, the modern React+Tailwind+shadcn stack) AND visual/marketing design (presentations & decks, social carousels & posts, ads, A4/A3 posters, flyers, business cards, event banners…
aceternity-ui
100+ animated React components (Aceternity UI) for Next.js with Tailwind. Use for hero sections, parallax, 3D effects, or encountering animation, shadcn CLI integration errors.
excessibility
LiveView introspection and accessibility testing skills for Phoenix. Use htmlsnapshot() to capture state at any point, axe-core for WCAG compliance, timeline analysis for debugging.