What is accessibility-testing?

A guide to checking whether web applications work for people with disabilities, including people using keyboards, screen readers, or other assistive tools. WCAG is a set of widely used web accessibility guidelines.

Use it to test WCAG compliance, keyboard navigation, screen reader support, color contrast, forms, focus handling, and ARIA attributes.

It helps find barriers that automated checks or ordinary browser testing may miss, such as poor keyboard access, low contrast, or incorrect form and ARIA behavior.

accessibility-testing — Skill for Claude Code and Codex by aj-geddes

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 aj-geddes/useful-ai-prompts --skill accessibility-testing

Clone the repo

git clone --depth 1 https://github.com/aj-geddes/useful-ai-prompts

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/accessibility-testing/github.svg)](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/accessibility-testing)

Your own site

<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/accessibility-testing"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/accessibility-testing/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/accessibility-testing"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/accessibility-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 719 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. Third-party audits

Socket pass 18 Mar 2026
Snyk pass 5 Mar 2026

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00045	$0.00719
Opus 5	$0.00023	$0.00360
Sonnet 5	$0.00009	$0.00144
Haiku 4.5	$0.00005	$0.00072

Measured 11d ago against content hash e7a7f9d9851e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 11d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/scaffold-tests.sh, templates/test-template.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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 · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Overview

Accessibility testing ensures web applications are usable by people with disabilities, including those using screen readers, keyboard navigation, or other assistive technologies. It validates compliance with WCAG (Web Content Accessibility Guidelines) and identifies barriers to accessibility.

When to Use

Validating WCAG 2.1/2.2 compliance
Testing keyboard navigation
Verifying screen reader compatibility
Testing color contrast ratios
Validating ARIA attributes
Testing form accessibility
Ensuring focus management
Testing with assistive technologies

Quick Start

Minimal working example:

// tests/accessibility/homepage.a11y.test.ts
import { test, expect } from "@playwright/test";
import AxeBuilder from "@axe-core/playwright";

test.describe("Homepage Accessibility", () => {
  test("should not have any automatically detectable WCAG A or AA violations", async ({
    page,
  }) => {
    await page.goto("/");

    const accessibilityScanResults = await new AxeBuilder({ page })
      .withTags(["wcag2a", "wcag2aa", "wcag21a", "wcag21aa"])
      .analyze();

    expect(accessibilityScanResults.violations).toEqual([]);
  });

  test("navigation should be accessible", async ({ page }) => {
    await page.goto("/");

    const results = await new AxeBuilder({ page }).include("nav").analyze();

    expect(results.violations).toEqual([]);
  });

// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide	Contents
axe-core with Playwright	axe-core with Playwright
Keyboard Navigation Testing	Keyboard Navigation Testing
ARIA Testing	ARIA Testing
Jest with jest-axe	Jest with jest-axe
Cypress Accessibility Testing	Cypress Accessibility Testing
Python with Selenium and axe	Python with Selenium and axe

Read the full file on GitHub · 103 lines

Files

What ships with it

8 files 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.

11d ago First seen · 103 lines · 45 tokens per session scan A e7a7f9d9851e

Subscribe to this mod's changes

accessibility-testing is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (336 stars, last pushed 6mo ago), licensed MIT. It adds 45 tokens to every session and 719 once invoked, about $0.0002 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 2026-08-30.

Testing

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accessibility-testing