ia-accessibility-tester

ia-accessibility-tester is an agent for Claude Code from iliaal/whetstone. It costs 48 tokens per session (972 once invoked), scanned A, original, MIT.

An accessibility review assistant for websites and other user interfaces. It checks against WCAG, a set of guidelines for making digital products usable by people with disabilities.

In plain words
What is it for?
Use it to review keyboard navigation, screen readers, colour contrast, ARIA labels, forms, focus behaviour, error messages, and alternative text, with findings linked to WCAG criteria.
Why use it?
It helps find barriers that may prevent keyboard users, screen-reader users, or people with visual, cognitive, or motor impairments from using an interface.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the whetstone plugin — 32 skills, 22 commands, 19 agents, 1 hook, 1 MCP server shipped together

Good fit Use it to review keyboard navigation, screen readers, colour contrast, ARIA labels, forms, focus behaviour, error messages, and alternative text, with findings linked to WCAG criteria.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/iliaal/whetstone/ia-accessibility-tester
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/iliaal/whetstone

Made for: Claude Code.

Or install whetstone, the plugin that ships this one along with the rest of its 32 skills, 22 commands, 19 agents, 1 hook, 1 MCP server.

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 ia-accessibility-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/iliaal/whetstone/ia-accessibility-tester/github.svg)](https://agentmods.dev/agents/iliaal/whetstone/ia-accessibility-tester)
Your own site
<a href="https://agentmods.dev/agents/iliaal/whetstone/ia-accessibility-tester"><img src="https://agentmods.dev/badge/agents/iliaal/whetstone/ia-accessibility-tester/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 ia-accessibility-tester

Your own site · 80×15
<a href="https://agentmods.dev/agents/iliaal/whetstone/ia-accessibility-tester"><img src="https://agentmods.dev/badge/agents/iliaal/whetstone/ia-accessibility-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 972 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 $0.00048 $0.00972
Opus 5 $0.00024 $0.00486
Sonnet 5 $0.00010 $0.00194
Haiku 4.5 $0.00005 $0.00097

Measured 9d ago against content hash 8dc5e23b9543, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

ia-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 9d 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.

plugins/whetstone/agents/ia-accessibility-tester.md · 117 lines

How it starts

The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a senior accessibility tester with deep expertise in WCAG 2.1/2.2 standards, assistive technologies, and inclusive design principles.

When invoked:

  1. Review existing accessibility implementations and compliance status
  2. Analyze user interfaces, content structure, and interaction patterns
  3. Report findings with severity and WCAG success criteria references

Accessibility Testing Checklist

  • WCAG 2.1 Level AA compliance
  • Zero critical violations
  • Keyboard navigation complete
  • Screen reader compatibility verified
  • Color contrast ratios passing (4.5:1 normal text, 3:1 large text)
  • Focus indicators visible
  • Error messages accessible
  • Alternative text comprehensive

WCAG Compliance (POUR)

  • Perceivable: text alternatives, captions, adaptable content, distinguishable
  • Operable: keyboard accessible, enough time, no seizures, navigable
  • Understandable: readable, predictable, input assistance
  • Robust: compatible with assistive technologies

Keyboard Navigation

  • Logical tab order follows visual layout
  • All interactive elements reachable via keyboard
  • Skip links to main content
  • No focus traps (except intentional modals with Escape exit)
  • Visible focus indicators on every focusable element
  • Custom keyboard shortcuts documented and non-conflicting

Read the full file on GitHub · 117 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. 9d ago First seen · 117 lines · 48 tokens per session scan A 8dc5e23b9543

Subscribe to this mod's changes

ia-accessibility-tester is an agent published in the GitHub repository iliaal/whetstone (33 stars, last pushed 2d ago), licensed MIT. It adds 48 tokens to every session and 972 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.

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