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A11y Scorer

lazymac2x/a11y-scorer-api

Gives Claude accessibility scoring capabilities through a Cloudflare Workers backend. The server runs remotely at api.lazy-mac.com and exposes tools for evaluating web accessibility, likely returning compliance scores or violation reports. Useful when you need programmatic a11y auditing without running local testing tools or want to check accessibility issues during content creation, site reviews, or QA workflows. The streamable HTTP transport means it works without local installation, though you're dependent on the hosted API's availability. The repository is light on specifics about which WCAG criteria it checks or what the response format looks like, so expect some trial and error to understand its full capabilities.

tools
4
transport
HTTP
last updated
May 16, 2026
View on GitHub

Install

From registry metadata
$ npx add-mcp https://api.lazy-mac.com/a11y-scorer/mcp --name a11y-scorer

Run in your terminal. add-mcp asks which agents to add it to (Claude Code, Codex, Cursor and more). Add -g to install it for every project.

Review the command, arguments and environment values before installing. MCP servers run with your local permissions.

Other ways

Claude Code

$ claude mcp add --transport http a11y-scorer https://api.lazy-mac.com/a11y-scorer/mcp

Run in your terminal. Add --scope user to make it available in every project.

Tools

Verified live · 4 tools

Verified live against the running server on Nov 6, 2026.

a11y_audit_urlFetch a URL and return a WCAG 2.1 AA heuristic audit.1 params

Fetch a URL and return a WCAG 2.1 AA heuristic audit.

Parameters* required
url*string
a11y_audit_htmlAudit raw HTML for WCAG 2.1 AA issues.1 params

Audit raw HTML for WCAG 2.1 AA issues.

Parameters* required
html*string
a11y_contrastEvaluate WCAG color contrast for a foreground/background pair.4 params

Evaluate WCAG color contrast for a foreground/background pair.

Parameters* required
bg*string
boldboolean
fg*string
fontSizenumber
a11y_headingsExtract heading outline from HTML.1 params

Extract heading outline from HTML.

Parameters* required
html*string

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Readme

a11y-scorer-api

Cloudflare Workers MCP server: a11y-scorer. REST + MCP (JSON-RPC 2.0). Live: api.lazy-mac.com/a11y-scorer

Details

Repository
github.com/lazymac2x/a11y-scorer-api
Category
Cloud & Infrastructure
Transport
HTTP
Registry
MCP registry, active
Tools verified
Nov 6, 2026

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