Plugin

Accessibility Test Scanner

A11y compliance testing with WCAG 2.1/2.2 validation, screen reader compatibility, and automated accessibility audits

Type: Plugin
Repository: jeremylongshore/tons-of-skills-marketplace
GitHub stars: 2.8k
License: MIT
Repo last updated: Sep 27, 2026
Source file: plugins/testing/accessibility-test-scanner/.claude-plugin/plugin.json
Version: 1.23.0
Author: Claude Code Plugin Hub

What Accessibility Test Scanner is

Accessibility Test Scanner is a plugin published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”

A plugin is a package that bundles skills, slash commands, subagents, hooks, and MCP connectors so they install together. Plugins are plain files with a manifest at .claude-plugin/plugin.json, and they work in both Claude Code and Claude Cowork.

Installing Accessibility Test Scanner adds everything it ships in one step. Connectors inside a plugin still need to be connected separately, and hooks and subagents only run in Cowork and Claude Code, not in regular chat.

How to install Accessibility Test Scanner

Claude Code

Add the repository as a plugin marketplace: claude plugin marketplace add jeremylongshore/tons-of-skills-marketplace
Install the plugin: claude plugin install accessibility-test-scanner@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json.
Restart the session if the new skills or commands don't appear straight away.

Claude Cowork

Open Customize → Plugins and choose Add marketplace.
Enter jeremylongshore/tons-of-skills-marketplace (the owner/repo shorthand works for GitHub).
Find Accessibility Test Scanner in the list, click Install, then connect any connectors it needs from its Connectors tab.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from plugins/testing/accessibility-test-scanner/.claude-plugin/plugin.json, shared under the repository's MIT license. Read the full file on GitHub.

A11y compliance testing with WCAG 2.1/2.2 validation, screen reader compatibility, and automated accessibility audits.

Installation

/plugin install accessibility-test-scanner@claude-code-plugins-plus

Usage

/a11y-scan
# or shortcut
/a11y

Features

WCAG 2.1/2.2 Compliance: Full Level A, AA, AAA validation
ARIA Validation: Proper ARIA usage and antipattern detection
Keyboard Navigation: Tab order and focus management testing
Screen Reader: Compatibility checks and test scenario generation
Color Contrast: Automated contrast ratio validation
Automated Integration: jest-axe, cypress-axe, Pa11y integration

Example Workflow

# Scan your application for accessibility issues
/a11y-scan

# Claude performs comprehensive audit:
#  WCAG compliance check
#  ARIA validation
#  Critical issues with fix recommendations
#  Automated test generation

Supported Standards

WCAG 2.1 (Level A, AA, AAA)
WCAG 2.2 (Latest)
Section 508
EN 301 549
ARIA 1.2

Testing Tools

axe-core
Pa11y
Lighthouse
WAVE
jest-axe / cypress-axe

Files

commands/a11y-scan.md - Main accessibility scanning command

License

MIT

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Accessibility Test Scanner?

Accessibility Test Scanner is a plugin for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. A11y compliance testing with WCAG 2.1/2.2 validation, screen reader compatibility, and automated accessibility audits

How do I install Accessibility Test Scanner in Claude Code?

Add the repository as a plugin marketplace: claude plugin marketplace add jeremylongshore/tons-of-skills-marketplace Install the plugin: claude plugin install accessibility-test-scanner@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json. Restart the session if the new skills or commands don't appear straight away.

Can I use Accessibility Test Scanner in Claude Cowork?

Open Customize → Plugins and choose Add marketplace. Enter jeremylongshore/tons-of-skills-marketplace (the owner/repo shorthand works for GitHub). Find Accessibility Test Scanner in the list, click Install, then connect any connectors it needs from its Connectors tab.

Is Accessibility Test Scanner safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.