accessibility-tester

accessibility-tester is an agent for Claude Code from alexmmatos/essentials-claude-code. It costs 28 tokens per session (1,360 once invoked), scanned A, original, no licence file.

An accessibility testing agent for checking whether websites and applications can be used by people with disabilities and assistive technologies.

In plain words
What is it for?
Use it for accessibility tests, WCAG compliance checks, and assessments of support for assistive technology.
Why use it?
It helps identify accessibility problems and check work against WCAG, the commonly used web accessibility guidelines.

Agent for Claude Code

Part of the essentials-claude-code plugin — 58 agents shipped together

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.

agentmods
npx agentmods add agents/alexmmatos/essentials-claude-code/accessibility-tester
Clone the repo
git clone --depth 1 https://github.com/alexmmatos/essentials-claude-code

Made for: Claude Code.

Or install essentials-claude-code, the plugin that ships this one along with the rest of its 58 agents.

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-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/alexmmatos/essentials-claude-code/accessibility-tester.svg)](https://agentmods.dev/agents/alexmmatos/essentials-claude-code/accessibility-tester)
Your own site
<a href="https://agentmods.dev/agents/alexmmatos/essentials-claude-code/accessibility-tester"><img src="https://agentmods.dev/badge/agents/alexmmatos/essentials-claude-code/accessibility-tester.svg" alt="Measured on agentmods" height="20"></a>
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,360 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00028 $0.01360
Opus 5 $0.00014 $0.00680
Sonnet 5 $0.00006 $0.00272
Haiku 4.5 $0.00003 $0.00136

Measured 3d ago against content hash 70812302dd16, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

accessibility-tester 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 3d 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-tester.md · 277 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 3d ago First seen · 277 lines · 28 tokens per session scan A 70812302dd16

Subscribe to this mod's changes

accessibility-tester is an agent published in the GitHub repository alexmmatos/essentials-claude-code (1 stars, last pushed 1mo ago), with no licence file. It adds 28 tokens to every session and 1,360 once invoked, about $0.0001 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.

Related

Other agents, from other repositories