Accessibility Scanner MCP Server

AnMCPserver that lets an AI agent scan a web page forWCAG accessibility issuesand get back findings it can act on. The agent calls one tool with a URL; it gets every violation grouped by severity, each with theexact element selector, the offending HTML, the specific failure, the WCAG success criterion, and a fix-guide link— plus the items that still need human review.

It runs the real axe-coreengine in yourlocal Chrome(viaplaywright-core), so nothing about the pages you scan leaves your machine. It scrolls the page first solazy-loaded content is actually checkedrather than silently skipped, and it resolves color contrast over CSS gradients, which most tools leave as "needs review."

Upgrading from 0.1.x?0.2.0 sees more of each page and returns more findings for the same URL. See CHANGELOG.md.

- Node.js 18+
- Google Chrome installed (or set theCHROME_PATHenvironment variable to a Chromium binary)

Add it to your MCP client's config. No global install needed —npxfetches it on first run.

Claude Desktop(claude_desktop_config.json),Cursor,Claude Code, or any MCP client:

{ "mcpServers": { "accessibility-scanner": { "command": "npx", "args": ["-y", "accessibility-scanner-mcp"] } } }

If Chrome is not auto-detected, add an env block:

{ "mcpServers": { "accessibility-scanner": { "command": "npx", "args": ["-y", "accessibility-scanner-mcp"], "env": { "CHROME_PATH": "/usr/bin/google-chrome" } } } }

Returns a report grouped by severity. For each rule: the WCAG criterion, a fix-guide link, and per element the selector, HTML, and exact failure. Example flow with an agent:

You:Audithttps://example.comfor accessibility and fix what you can.Agent:(callsscan_accessibility)→ reads the findings → edits the code → re-scans.

Automated testing covers the machine-checkable subset of WCAG (most of the issues on a typical page, but not all of it). Items that need human judgement are returned under "Needs manual review." It never claims a page is "compliant."

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Accessibility Scanner

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