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.
npx skills add LeahyCC/claude-skills --skill wcag-accessibilitygit clone --depth 1 https://github.com/LeahyCC/claude-skillsWrote 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.
[](https://agentmods.dev/skills/leahycc/claude-skills/wcag-accessibility)<a href="https://agentmods.dev/skills/leahycc/claude-skills/wcag-accessibility"><img src="https://agentmods.dev/badge/skills/leahycc/claude-skills/wcag-accessibility/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.
<a href="https://agentmods.dev/skills/leahycc/claude-skills/wcag-accessibility"><img src="https://agentmods.dev/badge/skills/leahycc/claude-skills/wcag-accessibility.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00062 | $0.03187 |
| Opus 5.5 | $0.00025 | $0.01275 |
| Sonnet 5.5 | $0.00012 | $0.00637 |
| Haiku 4.5 | $0.00006 | $0.00319 |
Grade A, and why
wcag-accessibility 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 259 lines — stays where its author put it; the contents beside it link to each section on GitHub.
WCAG 2.2 AA Accessibility
Accessibility guidance for web applications targeting WCAG 2.2 Level AA.
Quick Reference
| Need to... | See |
|---|---|
| Fix color contrast failures | Color Contrast |
| Add keyboard support to custom components | Keyboard Navigation |
| Choose correct ARIA roles and landmarks | Semantic HTML |
| Build accessible forms with validation | Forms and Inputs |
| Write good alt text, handle media | Images and Media |
| Handle animations and motion safely | Motion and Animation |
| Set up page lang, titles, reflow, zoom | Page Structure |
| Fix links, nav consistency, predictability | Links and Navigation |
| Support drag alternatives, touch targets | Pointer and Touch |
| Handle timeouts, auth, CAPTCHAs | Timing and Authentication |
| Set up automated a11y testing | Testing and Auditing |
Decision Matrix
Text contrast (WCAG 1.4.3, 1.4.11)
Large text is a point size. 18pt is 24px. Bold 14pt is about 18.5px. Regular text at 18px is still normal text and needs 4.5:1.
| Text | AA | AAA |
|---|---|---|
| Normal text (under 18pt / 24px, or bold under 14pt / 18.5px) | 4.5:1 | 7:1 |
| Large text (18pt / 24px and up, or bold 14pt / 18.5px and up) | 3:1 | 4.5:1 |
| UI components and graphics (1.4.11) | 3:1 | none |
| Disabled controls, decorative graphics, logos | none | none |
What ships with it
12 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.
- README.md 7.1 KB
- resources/color-contrast.md 5.0 KB
- resources/forms-and-inputs.md 5.6 KB
- resources/images-and-media.md 5.0 KB
- resources/keyboard-navigation.md 6.1 KB
- resources/links-and-navigation.md 7.7 KB
- resources/motion-and-animation.md 5.2 KB
- resources/page-structure.md 7.8 KB
- resources/pointer-and-touch.md 8.5 KB
- resources/semantic-html.md 6.5 KB
- resources/testing-and-auditing.md 8.5 KB
- resources/timing-and-authentication.md 11 KB
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.
- 5d ago Changed · -53 lines · -2 tokens per session d219753393fe
- 1mo ago First seen · 312 lines · 64 tokens per session scan A 9c4c5717f5f1
wcag-accessibility is a skill published in the GitHub repository LeahyCC/claude-skills (3 stars, last pushed 2d ago), licensed MIT. It adds 62 tokens to every session and 3,187 once invoked, about $0.0002 per session on Opus 5.5. 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.
Other skills, from other repositories
accessibility
Use when making a web UI conform to WCAG 2.2 Level AA — axe-core or Lighthouse a11y violations, keyboard operability, focus management, ARIA roles/names/live regions, contrast, tap-target size. NOT palette or visual intent (that is design), NOT test-runner setup (that is testing-web), NOT LCP/page-speed (that is…
Accessibility Audit Helper
Reviews UI code and components for WCAG 2.1 accessibility violations and provides specific fixes.
a11y-planner
Use when you know what component, flow, or interface you need but not yet the right accessibility approach. Best for turning WCAG 2.2 requirements into an accessible implementation plan with WAI-ARIA APG patterns before code hardens bad interaction and state patterns.
color-contrast-auditor
Detects and fixes color contrast violations using WCAG 2.1 guidelines and perceptual analysis. Expert in contrast ratio calculation, color blindness simulation, and providing accessible alternatives. Activate on "check contrast", "color accessibility", "WCAG audit", "readability check", "contrast ratio", "hard to…
web-a11y-css
Reviews and writes CSS that preserves accessibility across contrast, focus styles, reduced motion, forced colors, zoom, target size, semantic integrity, and custom-styled controls. Use for UI styling and design-system changes.
wes-bos-sick-picks
Research-first workflow for building frontend UI components (any framework), in the spirit of Wes Bos. Use when designing or implementing a UI component, layout, interaction, or CSS/HTML feature and you want a modern, accessible, best-practice solution rather than a first guess. Researches pitfalls and platform…