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wcag-auditor

wcag-auditor is a skill for Claude Code, Codex from ImYourBoyRoy/Portable_Web_toolkit. It costs 72 tokens per session (761 once invoked), scanned A, original, MIT.

An accessibility checking tool for Astro websites that uses Playwright to open pages and axe to find common barriers for people with disabilities. It produces evidence and an HTML dashboard, but it is not an official WCAG certification.

In plain words
What is it for?
Use it to run accessibility checks on Portable Web Toolkit-managed Astro sites, review the results, and share the generated report.
Why use it?
It helps find accessibility problems in a repeatable way instead of relying only on manual inspection. The dashboard makes the findings easier to review with stakeholders.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is node ./Web_Toolkit/wcag_auditor/bin/wcag-auditor.mjs run \.

Part of the portable-web-toolkit plugin — 14 skills shipped together

not rated 2repo 25d ago A scan 72 tokens original MIT

Good fit Use it to run accessibility checks on Portable Web Toolkit-managed Astro sites…

Compare 6 skills from other repositories ↓
View source ↗ ImYourBoyRoy/Portable_Web_toolkit
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/ImYourBoyRoy/Portable_Web_toolkit
agentmods
npx agentmods add skills/imyourboyroy/portable_web_toolkit/wcag-auditor

Made for: Claude Code, Codex.

Or install portable-web-toolkit, the plugin that ships this one along with the rest of its 14 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 wcag-auditor

README.md
[![agentmods](https://agentmods.dev/badge/skills/imyourboyroy/portable_web_toolkit/wcag-auditor.svg)](https://agentmods.dev/skills/imyourboyroy/portable_web_toolkit/wcag-auditor)
Your own site
<a href="https://agentmods.dev/skills/imyourboyroy/portable_web_toolkit/wcag-auditor"><img src="https://agentmods.dev/badge/skills/imyourboyroy/portable_web_toolkit/wcag-auditor.svg" alt="Measured on agentmods" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 761 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 $0.00072 $0.00761
Opus 5 $0.00036 $0.00380
Sonnet 5 $0.00014 $0.00152
Haiku 4.5 $0.00007 $0.00076

Measured 6d ago against content hash 7c41e438c491, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

wcag-auditor 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 6d 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/wcag-auditor/SKILL.md · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

WCAG Auditor

Use only Web_Toolkit/wcag_auditor (never AI/wcag-auditor or sibling trees).

Evidence gate only — not a WCAG conformance certificate.

Prerequisites

  1. Client project has a linked Web_Toolkit/ and *.site-profile.json.
  2. Playwright peers in the client project (playwright, @axe-core/playwright).
  3. Chromium browser binary (npx playwright install chromium). The CLI auto-installs these unless --skip-playwright-install.

Preferred commands

# With site profile (ephemeral config if no wcag-auditor.config.mjs)
node ./Web_Toolkit/wcag_auditor/bin/wcag-auditor.mjs run \
  --site-profile ./<site>.site-profile.json \
  --base-url https://example.com

# Persist a checked-in config
node ./Web_Toolkit/wcag_auditor/bin/wcag-auditor.mjs init --site-profile ./<site>.site-profile.json
node ./Web_Toolkit/wcag_auditor/bin/wcag-auditor.mjs run --site-profile ./<site>.site-profile.json --base-url http://127.0.0.1:4321

Confirm: node ./Web_Toolkit/wcag_auditor/bin/wcag-auditor.mjs core-path must end with Web_Toolkit/wcag_auditor.

After every run — share the dashboard

  1. Locate wcag-audit-dashboard.html under the run output directory (CLI prints stakeholder dashboard → …).
  2. Open it and share the path with the user (Cursor canvas is optional extra; the HTML dashboard is the durable artifact).
  3. Prefer findings that show file:line — those are best-effort maps from selectors/classes into src/. Unmapped rows still list the CSS selector for search.
  4. JSON/SARIF remain for tools; dashboard is for humans.

Rules

  1. Pass --site-profile for toolkit sites.
  2. Prefer live URL or local preview --base-url; do not invent routes.
  3. Fix findings with smallest safe CSS/markup changes; re-run after fixes.
  4. Do not treat PageSpeed Accessibility scores as WCAG proof.
  5. Always surface the stakeholder dashboard path in the chat reply after a run.
  6. Glassmorphism / frost UI is supported. Axe color-contrast incompletes map to cantTell (exit 3 unresolved), not an auto-fail. Do not strip frost UI solely to silence the gate. Prefer: raise frost opacity / solid underlay under text → verify AA with a contrast sampler → complete frost-glass-contrast in wcag-audit/manual-evidence.json → add a bounded suppression with outcomes: ["cantTell"] for axe/color-contrast on the route. See Web_Toolkit/wcag_auditor/docs/GLASSMORPHISM.md.
  7. Never set gate.unresolvedEvidence: "ignore" just to ship glass; resolve evidence properly.

Read the full file on GitHub · 49 lines

Files

What ships with it

2 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.

  1. 6d ago First seen · 49 lines · 72 tokens per session scan A 7c41e438c491

Subscribe to this mod's changes

wcag-auditor is a skill published in the GitHub repository ImYourBoyRoy/Portable_Web_toolkit (2 stars, last pushed 25d ago), licensed MIT. It adds 72 tokens to every session and 761 once invoked, about $0.0004 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.

Claude CodeFrontendTestingagent-skillsai-agentsantigravityastroautomation
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