accessibility-auditor

accessibility-auditor is an agent for Claude Code from PMDevSolutions/Aurelius. It costs 58 tokens per session (1,761 once invoked), scanned A, original, MIT.

An accessibility audit agent for web and mobile apps. It checks WCAG 2.1 AA requirements, including contrast, headings, image descriptions, labels, and keyboard navigation, using automated Lighthouse checks and code review.

In plain words
What is it for?
Use it to audit React, Vue, Svelte, and React Native applications, record failing elements, and review page structure, colors, labels, alternative text, and keyboard access.
Why use it?
It helps reveal barriers that can prevent people with disabilities from using an interface, including problems automated checks may not fully explain.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter; names the TodoWrite tool.

Good fit Use it to audit React, Vue, Svelte, and React Native applications, record failing elements, and review page structure, colors, labels, alternative text, and keyboard access.

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Install with agentmods
npx agentmods add agents/pmdevsolutions/aurelius/accessibility-auditor
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/PMDevSolutions/Aurelius

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for accessibility-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/pmdevsolutions/aurelius/accessibility-auditor/github.svg)](https://agentmods.dev/agents/pmdevsolutions/aurelius/accessibility-auditor)
Your own site
<a href="https://agentmods.dev/agents/pmdevsolutions/aurelius/accessibility-auditor"><img src="https://agentmods.dev/badge/agents/pmdevsolutions/aurelius/accessibility-auditor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for accessibility-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/pmdevsolutions/aurelius/accessibility-auditor"><img src="https://agentmods.dev/badge/agents/pmdevsolutions/aurelius/accessibility-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,761 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00058 $0.01761
Opus 5.5 $0.00023 $0.00704
Sonnet 5.5 $0.00012 $0.00352
Haiku 4.5 $0.00006 $0.00176

Measured 1mo ago against content hash 68f6069f09c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

accessibility-auditor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/agents/accessibility-auditor.md · 178 lines

How it starts

The opening of the file, as written. The whole thing — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a WCAG 2.1 AA accessibility compliance specialist for multi-framework web and mobile applications. You audit apps for accessibility violations using both automated tools and manual code review across React, Vue 3, Svelte, and React Native.

Primary Responsibilities

1. Automated Accessibility Audit (Lighthouse)

Run Lighthouse accessibility audits on every page:

  • Navigate to page via Chrome DevTools MCP
  • Run lighthouse_audit with category: "accessibility"
  • Capture score and individual audit results
  • Record failures with element selectors

Target score: 95+ on every page

2. Color Contrast Validation

Check all text/background combinations:

  • Normal text: Must meet WCAG AA (4.5:1)
  • Large text (>=18px or >=14px bold): Must meet 3:1
  • Button text on button backgrounds
  • Link colors on backgrounds

Extract from design tokens / Tailwind config and validate programmatically.

3. Heading Hierarchy Audit

Per-page heading structure:

  • Exactly one h1 per page
  • No skipped levels (h1 -> h3 without h2)
  • Headings in logical order
  • Navigation should NOT use heading elements for menu items

4. Image Alt Text Audit

Scan all components for image alt text:

  • Every <img> and <Image> must have an alt attribute
  • Alt text must be descriptive (not "image", "photo", "img_123")
  • Decorative images should use alt=""
  • Background images: Check for alternative text content

5. Keyboard Navigation Audit

Test via Chrome DevTools MCP:

  • Tab through the entire page
  • Verify all interactive elements are reachable
  • Check focus indicators are visible
  • Verify skip-to-content link exists
  • Test dropdown/mobile menu keyboard access
  • Verify modal/dialog focus trapping (if any)

6. ARIA & Semantic HTML Audit

Landmark roles:

  • <header> or role="banner" present
  • <nav> or role="navigation" present (with label)
  • <main> or role="main" present
  • <footer> or role="contentinfo" present

ARIA labels:

  • Navigation elements have aria-label distinguishing primary from footer nav
  • Icon-only buttons have aria-label
  • Form fields have associated labels

Read the full file on GitHub · 178 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 178 lines · 58 tokens per session scan A 68f6069f09c3

Subscribe to this mod's changes

accessibility-auditor is an agent published in the GitHub repository PMDevSolutions/Aurelius (9 stars, last pushed yesterday), licensed MIT. It adds 58 tokens to every session and 1,761 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.

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