accessibility-testing

accessibility-testing is a skill for Claude Code from aks-builds/quality-skills. It costs 145 tokens per session (2,792 once invoked), scanned A, original, MIT.

A guide for testing whether websites, mobile apps, and some desktop software can be used by people with disabilities. It covers automated checks, manual reviews, screen readers, and standards such as WCAG.

In plain words
What is it for?
Use it to add accessibility scans to CI, plan manual and screen-reader testing, and assess WCAG, Section 508, EAA, or ADA compliance.
Why use it?
It helps find accessibility problems that automated tools may miss and explains how accessibility standards apply to a project.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the quality-skills plugin — 57 skills shipped together

Good fit Use it to add accessibility scans to CI, plan manual and screen-reader testing, and assess WCAG, Section 508, EAA, or ADA compliance.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aks-builds/quality-skills/accessibility-testing
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.

Any agent
npx skills add aks-builds/quality-skills --skill accessibility-testing
Clone the repo
git clone --depth 1 https://github.com/aks-builds/quality-skills

Made for: Claude Code.

Or install quality-skills, the plugin that ships this one along with the rest of its 57 skills.

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-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/aks-builds/quality-skills/accessibility-testing.svg)](https://agentmods.dev/skills/aks-builds/quality-skills/accessibility-testing)
Your own site
<a href="https://agentmods.dev/skills/aks-builds/quality-skills/accessibility-testing"><img src="https://agentmods.dev/badge/skills/aks-builds/quality-skills/accessibility-testing.svg" alt="Measured on agentmods" height="20"></a>
Per session 145 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,792 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 $0.00145 $0.02792
Opus 5 $0.00072 $0.01396
Sonnet 5 $0.00029 $0.00558
Haiku 4.5 $0.00015 $0.00279

Measured 7d ago against content hash 40f033b38b4e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

accessibility-testing 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 7d 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.

skills/accessibility-testing/SKILL.md · 244 lines

How it starts

The opening of the file, as written. The whole thing — 244 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Accessibility Testing

You are an expert in accessibility testing for web, mobile, and (when applicable) desktop / kiosk software. Your goal is to help engineers integrate automated a11y scans into CI, design tests that catch real accessibility issues, and recognize the limits of automation — most accessibility failures still require human judgment. Don't fabricate WCAG success criteria, tool features, or assistive technology capabilities. When uncertain, point the reader to W3C / WAI documentation, the specific tool's docs, or recognized accessibility consultants.

Initial Assessment

Check .agents/qa-context.md (fallback: .claude/qa-context.md) before answering. Pay attention to:

  • Conformance target — WCAG 2.1 AA is the standard most regulations point at. WCAG 2.2 (2023) adds criteria. Section 508 (US federal) and the EAA / European Accessibility Act (in force June 2025) reference WCAG.
  • Audience — public site, internal tool, regulated industry (healthcare, finance, government). Drives investment level.
  • Stack — automated tools vary by platform (web vs iOS vs Android). Manual testing applies everywhere.
  • Maturity — first-time a11y program, ongoing maintenance, or remediation after audit.
  • Specific failures known — past complaints, lawsuits, audit findings.

If the file does not exist, ask: conformance target, audience / regulatory context, platform(s), current a11y maturity.


What automated a11y testing can and cannot do

Automation catches Automation misses
Missing alt attributes Alt text that's present but useless ("image.jpg")
Form inputs without labels Labels that say wrong things
Color contrast violations on rendered HTML Contrast in dynamically generated SVGs / canvases
Heading structure issues Reading order that makes no sense
Missing landmarks Landmarks named non-meaningfully
ARIA validity (e.g., aria-hidden errors) ARIA used to lie ("button" role on something that isn't a button)
Some keyboard-trap conditions Most keyboard usability issues
Missing language declaration Wrong language declaration

Read the full file on GitHub · 244 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 7d ago First seen · 244 lines · 145 tokens per session scan A 40f033b38b4e

Subscribe to this mod's changes

accessibility-testing is a skill published in the GitHub repository aks-builds/quality-skills (2 stars, last pushed 4d ago), licensed MIT. It adds 145 tokens to every session and 2,792 once invoked, about $0.0007 per session on Opus 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 2026-08-31.

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