Accessibility Hub

What is Accessibility Hub?

Accessibility Hub is an MCP server that orchestrates web accessibility tools (axe‑core, Pa11y, Lighthouse) to analyze web pages, check color contrast, obtain Lighthouse scores, and produce detailed WCAG compliance reports with enriched human context. It is designed for developers and QA engineers who need automated, actionable accessibility insights.

How to use Accessibility Hub?

Install the package globally with npm install -g AccesibilityHub, then add the configuration to your MCP client using the command npx with args ["-y", "AccesibilityHub"]. Once configured, you can instruct your AI assistant to analyze a URL, for example: “Analyze the accessibility of https://example.com.”

Key features of Accessibility Hub

• Runs axe‑core, Pa11y, and Lighthouse accessibility audits
• Color contrast analysis using WCAG 2.1 and APCA standards
• Mixed analysis runs multiple tools in parallel
• Provides enriched human context for each issue
• Offers pre‑built prompt templates for common audit tasks
• Includes WCAG criteria and contrast thresholds as resources

Use cases of Accessibility Hub

• Quick accessibility check of a web page before deployment
• Deep WCAG compliance audit with detailed remediation advice
• Color contrast testing during design reviews
• Continuous accessibility monitoring in CI/CD pipelines
• Getting a Lighthouse accessibility score with an improvement plan

FAQ from Accessibility Hub

What dependencies are required?

Node.js ≥ 20 and Chrome/Chromium (the latter is automatically downloaded by Puppeteer).

How do I install and configure it?

Install via npm install -g AccesibilityHub and add the MCP client configuration with command npx and args ["-y", "AccesibilityHub"].

What tools does it support?

It supports axe‑core, Pa11y, Lighthouse, and a color contrast analyzer (WCAG 2.1/APCA). It can also run multiple tools in parallel.

Does it include WCAG reference data?

Yes, it provides WCAG 2.1 criteria reference and contrast thresholds as resources.

Is it open source?

Yes, it is licensed under MIT.