web-quality-skills
Measured performance, Core Web Vitals, accessibility, SEO, best-practices, and agentic browsing skills for any web stack.
Plugin bundle · by Addy Osmani
About
web-quality-skills is a plugin bundle for AI coding tools published by Addy Osmani. Marketplaces we read that list it: 1 (Community GitHub marketplaces). The last change we recorded was on 2026-10-16. As of our marketplace pass on 2026-10-16.
What it asks for
- Installs as a plugin bundle
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a Claude Code plugin
Built from what Community GitHub marketplaces declares.
/plugin marketplace add addyosmani/web-quality-skills
/plugin install web-quality-skills@addy-web-quality-skillsWhere it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Community marketplace addyosmani/web-quality-skills (Open the source on GitHub) | Listed | 2.0.0 | Forks (GitHub): 256 Stars (GitHub): 2 949 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
Listed in one community marketplace
| Marketplace | Repository | Stars (GitHub) |
|---|---|---|
| addy-web-quality-skills | addyosmani/web-quality-skills | 2 949 |
What the bundle contains
As published on Community GitHub marketplaces.
Skills: 6
accessibilitybest-practicescore-web-vitalsperformanceseoweb-quality-audit
What changed
- Became a product we track
- Community GitHub marketplaces: appeared
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
Audits public-facing websites across accessibility, SEO, GEO (AI search readiness), and usability -- evaluates 17 checks, assigns a letter grade, and generates a client-ready PDF…
-
Brutal AI website audit. Lighthouse + axe + niche-aware design critique.
-
Scan a website for SEO, accessibility, performance and security issues, and read the report.
-
Sitejar Web Compliance Scanner
Scan a web page for accessibility, security, privacy, quality and SEO issues, with fixes.
-
siteaudit io.github.thegridwork/siteaudit
Audit websites for accessibility, performance, SEO, design, and mobile. 47 WCAG checks.
-
MCP server: audit any website for SEO, accessibility, and AI-searchability, then auto-fix it.
-
pageaudit online.pageaudit/pageaudit
Technical SEO, passive security and page-delivery audits with evidence and suggested fixes.
-
AI website audit: security, SEO, performance, UX and accessibility checks with actionable fixes.
-
audit ai.webmatik/audit
AI website growth audits: SEO, performance, AI readiness (GEO), conversion, a11y, security.
-
Run full technical SEO audits of any website from your AI agent and get structured findings back.
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
Audits public-facing websites across accessibility, SEO, GEO (AI search readiness), and usability -- evaluates 17 checks, assigns a letter grade, and generates a client-ready PDF…
-
Webpage quality evaluator based on Google Search Quality Rater Guidelines (QRG). Inspects page purpose, MC quality, E-E-A-T, reputation, and spam signals to produce a graded…
-
Free AI-powered SEO toolkit — audit websites, plan content strategy, optimize pages, generate schema markup, cluster keywords, and track AI visibility. Works with any website or…
-
Magpie website intelligence over a hosted MCP server. Free: a single-page audit covering overall score, Core Web Vitals, on-page SEO, security headers, robots/sitemap, and…
-
Free AI visibility audit for any website. Discover how ChatGPT, Claude, and Perplexity perceive your brand across 5 dimensions and 30 checks — then get a one-click fix plan…
Has a listing on Claude Code: claude-plugins-official (5)
-
Keep your coding agent up to date with the latest web best practices
-
playwright-mcp io.github.microsoft/playwright-mcp
Playwright Tools for MCP
-
CodSpeed is the all-in-one performance testing toolkit. Dive into benchmarking results, flamegraphs, and performance comparisons — give Claude granular profiling context to…
-
MCP server for Chrome DevTools
-
Give Claude a real browser — your Chrome or a Browser Use Cloud browser. Use it whenever a task involves a website or web app: browsing, scraping and data extraction, filling…
Has a listing on Claude: knowledge-work-plugins (5)
-
Free AI-powered SEO toolkit — audit websites, plan content strategy, optimize pages, generate schema markup, cluster keywords, and track AI visibility. Works with any website or…
-
Keep your coding agent up to date with the latest web best practices
-
Give Claude a real browser — your Chrome or a Browser Use Cloud browser. Use it whenever a task involves a website or web app: browsing, scraping and data extraction, filling…
-
The complete web toolkit for your agent. Search the web and get answers in milliseconds. Fetch any URL and get clean markdown content back. Send a browser agent to navigate sites…
-
Sanity content platform integration with MCP server, agent skills, and slash commands. Query and author content, build and optimize GROQ queries, design schemas, and set up Visual…
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Evaluate Codex skills and plugins from chat with a beginner-friendly start command, local-first reports, token budget explanations, and guided benchmarking.
-
Build web apps with frontend asset design, browser testing, UI components, payments, and database guidance.
-
Cloudflare platform plugin with curated skills for Workers, Wrangler, and Agents SDK plus the official Cloudflare API MCP server.
-
AI-powered code review in Codex, powered by CodeRabbit.
-
Codex Security workflows for security scans, analysis, and investigation.
Has a listing on Community GitHub marketplaces (5)
-
Brutal AI website audit. Lighthouse + axe + niche-aware design critique.
-
AI visibility + site audits: see if ChatGPT, Perplexity, Claude & Gemini recommend a website.
-
Accessibility and WCAG data for your own websites: fix lists, live checks, and fix validation.
-
Review and improve web accessibility with evidence-based checks and manual verification.
-
Website QA tool built for coding agents (Claude Code, Cursor). 300+ rules across SEO, performance, security, accessibility & agent experience: audit from the CLI, fix findings in…
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Keep your coding agent up to date with the latest web best practices
-
MCP server for Chrome DevTools
-
Inspect a repository, improve Tiny Tool Town readiness, submit its listing issue, and launch remediation work.
-
Helps GitHub Copilot investigate mobile app telemetry, diagnose crashes, manage [bitdrift](bitdrift.ai) workflows and dashboards, integrate the Capture SDK into iOS, Android, and…
-
Three-layer verification pipeline for AI output. Extracts claims, finds sources, and flags hallucination risks so humans can verify before acting.
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
Advanced Security plugin for GitHub Copilot.
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
Bring Azure DevOps work-item, repository, and pull-request workflows into GitHub Copilot.
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
-
workiq
Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.
Has a listing on Cursor: cursor/plugins (5)
-
playwright-mcp io.github.microsoft/playwright-mcp
Playwright Tools for MCP
-
Research keywords, backlinks, rankings, and site health.
-
Analyze website traffic, audiences, and competitors.
-
Browse and automate the web with TinyFish: run multi-step web automations, search the web, extract clean page content, and drive remote stealth browser sessions.
-
Research keywords, backlinks, traffic, and competitors.
Has a listing on Docker MCP Catalog (5)
-
playwright-mcp io.github.microsoft/playwright-mcp
Playwright Tools for MCP
-
mcp-server-browserbase io.github.browserbase/mcp-server-browserbase
MCP server for AI web browser automation using Browserbase and Stagehand
-
Playwright Model Context Protocol Server - Tool to automate Browsers and APIs in Claude Desktop, Cline, Cursor IDE and More 🔌.
-
Access the latest documentation on Cloudflare products such as Workers, Pages, R2, D1, KV.
-
🔥 Official Firecrawl MCP Server - Adds powerful web scraping and search to Cursor, Claude and any other LLM clients.
Has a listing on Official MCP Registry (5)
-
Scan a website for SEO, accessibility, performance and security issues, and read the report.
-
Sitejar Web Compliance Scanner
Scan a web page for accessibility, security, privacy, quality and SEO issues, with fixes.
-
siteaudit io.github.thegridwork/siteaudit
Audit websites for accessibility, performance, SEO, design, and mobile. 47 WCAG checks.
-
MCP server: audit any website for SEO, accessibility, and AI-searchability, then auto-fix it.
-
pageaudit online.pageaudit/pageaudit
Technical SEO, passive security and page-delivery audits with evidence and suggested fixes.
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Want this mark on your plugin in our catalog?
Prove you maintain it with a file in its repository, a file on your domain or a DNS record, and you can show this mark on the card, with live banners for your site and README. How verification works
You also get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.