auditing-wcag

auditing-wcag is a skill for Claude Code, Codex from masuP9/a11y-specialist-skills. It costs 49 tokens per session (1,350 once invoked), scanned A, original, MIT.

A structured method for formally checking websites or code against WCAG 2.2 A or AA requirements. WCAG is a set of accessibility guidelines, and each requirement receives a result such as Pass, Fail, Not Tested, or Not Applicable.

In plain words
What is it for?
Use it to plan or perform formal WCAG audits, assess every success criterion, record evidence, and produce conformance findings for a defined scope.
Why use it?
It replaces an informal accessibility check with a complete, evidence-based conformance record. This makes it easier to see which requirements were tested and where the evidence is.

Skill for Claude CodeCodex

Written for Claude Code and Codex: allowed-tools in frontmatter, but also agents/openai.yaml present.

Part of the a11y-specialist-skills plugin — 4 skills shipped together

Good fit Use it to plan or perform formal WCAG audits, assess every success criterion, record evidence, and produce conformance findings for a defined scope.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/masup9/a11y-specialist-skills/auditing-wcag
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 masuP9/a11y-specialist-skills --skill auditing-wcag
Clone the repo
git clone --depth 1 https://github.com/masuP9/a11y-specialist-skills

Made for: Claude Code, Codex.

Or install a11y-specialist-skills, the plugin that ships this one along with the rest of its 4 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 auditing-wcag

README.md
[![agentmods](https://agentmods.dev/badge/skills/masup9/a11y-specialist-skills/auditing-wcag/github.svg)](https://agentmods.dev/skills/masup9/a11y-specialist-skills/auditing-wcag)
Your own site
<a href="https://agentmods.dev/skills/masup9/a11y-specialist-skills/auditing-wcag"><img src="https://agentmods.dev/badge/skills/masup9/a11y-specialist-skills/auditing-wcag/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 auditing-wcag

Your own site · 80×15
<a href="https://agentmods.dev/skills/masup9/a11y-specialist-skills/auditing-wcag"><img src="https://agentmods.dev/badge/skills/masup9/a11y-specialist-skills/auditing-wcag.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,350 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 $0.00049 $0.01350
Opus 5 $0.00024 $0.00675
Sonnet 5 $0.00010 $0.00270
Haiku 4.5 $0.00005 $0.00135

Measured 13d ago against content hash ef1301a83e0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

auditing-wcag 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 13d 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/auditing-wcag/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

日本語版 (Japanese)

WCAG Conformance Audit

You perform WCAG 2.2 AA conformance audits. Report Pass/Fail/NT/NA per success criterion with evidence.

When to Use This Skill

Perspective reviewing-a11y auditing-wcag
Goal Find issues and propose fixes Systematic conformance verification
Output Severity-based issues list Pass/Fail/NT/NA per success criterion
Scope Practical issues focus Full WCAG 2.2 A/AA coverage

Routing Rules

  • auditing-wcag: Requests for "audit", "compliance", "conformance", or formal reporting.
  • reviewing-a11y: Requests for "review", "find issues", "improvements", or dev feedback.
  • If unclear, ask which goal they want: compliance report or issue review.

Workflow (6 Steps)

1. Input Acceptance

  • Accept a URL or local file path.
  • For multiple pages, confirm the list and entry points.
  • For local files, use the available file-reading capability (runtime behavior cannot be executed).

2. Scope Contract

Confirm and get agreement on:

  • Target level (A/AA, default WCAG 2.2 AA)
  • Page scope (all pages / representative pages / provided URLs)
  • Limitations (AT checks out of scope, dynamic behavior depends on Playwright)
  • Output format (Pass/Fail/NT/NA per success criterion)

3. Automated Checks

  • Use Playwright to navigate and capture the accessibility tree.
  • Apply references/automated-checks.md.
  • If browser interaction is unavailable, run the checks via the a11y-audit CLI (see "Automated Checks CLI" below).
  • If the CLI also cannot run, retrieve HTML with the available web capability and limit judgments accordingly.
  • Use references/coverage-matrix.md to ensure A/AA coverage.

4. Interactive Checks

  • Validate keyboard access and focus behavior with Playwright.
  • Follow references/interactive-checks.md.
  • If execution is blocked, mark affected criteria as NT.

5. Manual Check Items

  • Present items from references/manual-checks.md and references/content-checks.md.
  • If evidence is not available, keep them as NT and list them explicitly.
  • Incorporate any evidence the user provides.

Read the full file on GitHub · 125 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. 13d ago First seen · 125 lines · 49 tokens per session scan A ef1301a83e0f

Subscribe to this mod's changes

auditing-wcag is a skill published in the GitHub repository masuP9/a11y-specialist-skills (56 stars, last pushed yesterday), licensed MIT. It adds 49 tokens to every session and 1,350 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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