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A11y MCP server

by rog0x·io.github.rog0x/a11y·v1.0.2
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Alt text, headings, contrast, ARIA for AI agents

B72/100grade B
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Safety scan
B72/100

full report

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If you have run it, two minutes of your experience saves the next person an afternoon.

A11y tools (5)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • check_alt_text

    Analyze images in HTML for missing, empty, or low-quality alt text. Reports which images need alt text, which use decorative (empty) alt, and which are properly labeled. Also checks linked images and input[type=image].

  • check_color_contrast

    Check WCAG 2.x contrast ratio between a foreground and background color pair. Reports AA and AAA compliance for both normal and large text. Accepts hex (#fff, #ffffff), rgb(r,g,b), or named colors.

  • check_form_accessibility

    Check form elements for accessibility: verifies labels are associated with inputs, radio/checkbox groups use fieldset/legend, placeholder is not used as sole label, autocomplete hints on personal info fields, and detects duplicate IDs.

  • check_heading_hierarchy

    Validate heading structure in HTML: checks for proper h1-h6 nesting order, no skipped levels, single h1, empty headings, and heading content quality. Returns a visual tree of the heading structure.

  • validate_aria

    Validate ARIA attributes in HTML: checks for invalid roles, missing required ARIA properties, redundant ARIA on native elements, aria-label on non-interactive elements, and aria-hidden on focusable elements.

Public scan report

scanner v0.1.10 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • Code scan20 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 190 days ago4/15
  • Maintainer identityregistry namespace matches repository owner6/10
Overall 72/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Install A11y in Claude Code, Cursor or VS Code

Runs npx -y @rog0x/mcp-a11y-tools on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add a11y -- npx -y @rog0x/mcp-a11y-tools
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A11y: common questions

Is A11y MCP server safe?
Mostly: it is graded B (72/100). Read the A11y safety report
How do I install A11y?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does A11y need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is A11y maintained?
The last commit was 206 days ago (2026-03-21). The latest release is v1.0.2.

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