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 vinnie357/claude-skills --skill accessibilitygit clone --depth 1 https://github.com/vinnie357/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/vinnie357/claude-skills/accessibility)<a href="https://agentmods.dev/skills/vinnie357/claude-skills/accessibility"><img src="https://agentmods.dev/badge/skills/vinnie357/claude-skills/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/vinnie357/claude-skills/accessibility"><img src="https://agentmods.dev/badge/skills/vinnie357/claude-skills/accessibility.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Prompt Injection · line 58 Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
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 | $0.00034 | $0.01567 |
| Opus 5 | $0.00017 | $0.00783 |
| Sonnet 5 | $0.00007 | $0.00313 |
| Haiku 4.5 | $0.00003 | $0.00157 |
Grade A, and why
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 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.
How it starts
The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Web Accessibility
Apply W3C Web Accessibility Initiative (WAI) principles when working on web interfaces to ensure usability for people with disabilities.
Anti-fabrication
This skill follows core:anti-fabrication. The claim area is the WCAG version cited and
the ARIA Authoring Practices Guide (APG) pattern attributions. Verified against W3C's
live WCAG22 quickref and the APG patterns index (claude-skills-223): the WCAG citation
was bumped from 2.1 to 2.2 (2.2 became a Recommendation 2023-10-05, and per its own text
"content that conforms to WCAG 2.2 also conforms to WCAG 2.0 and WCAG 2.1" — compatibility
runs 2.2-to-2.1, not the reverse this skill previously implied); and "skip links" was
corrected from an APG pattern to what it actually is, a WCAG bypass-blocks technique — the
APG index lists 30 named patterns and skip links is not one of them. Re-verify against
w3.org/TR/WCAG22/ before citing a WCAG version or success-criterion number this skill
doesn't cover.
Core Principles (POUR)
Web accessibility is organized around four foundational principles:
1. Perceivable
Information must be presentable to users in ways they can perceive.
Key requirements:
- Provide text alternatives for non-text content (images, icons, charts)
- Provide captions and transcripts for multimedia
- Create content that can be presented in different ways (responsive, reflow)
- Make content distinguishable (color contrast, text sizing, audio control)
Quick example:
<img src="chart.png" alt="Sales increased 40% in Q4 2024">
<button aria-label="Close dialog">
<span class="icon-close" aria-hidden="true"></span>
</button>
2. Operable
User interface components must be operable by all users.
Key requirements:
- Make all functionality keyboard accessible
- Provide sufficient time for users to complete tasks
- Avoid content that causes seizures (no rapid flashing)
- Help users navigate and find content
- Support various input modalities (touch, voice, keyboard)
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.
- 9d ago First seen · 175 lines · 34 tokens per session scan A f1d6b0bf4296
accessibility is a skill published in the GitHub repository vinnie357/claude-skills (25 stars, last pushed 2d ago), licensed MIT. It adds 34 tokens to every session and 1,567 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.
Other skills, from other repositories
chakra-ui-builder
Build responsive, accessible UI components and layouts using Chakra UI v3, install or configure Chakra UI in new and existing projects, and design scalable themes using tokens, semantic tokens, recipes, and slot recipes. Use this skill whenever a user asks to build, create, or generate any UI component, page, form…
visual-ralph
Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ralph with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.
frontend-visual-qa
Audits already-rendered web, landing-page, HTML deck/slide, browser tool/game, dashboard/admin, design-system, and desktop UIs using real-browser or native-app journeys, inspected screenshots, DOM geometry, responsive or projection viewports, and a bundled Playwright sweep. Use after UI implementation to find…
prototype-web
A clickable, high-fidelity web product prototype with navigation, a hero section, feature cards, steps, social proof, and optional pricing. It is designed to resemble a finished landing page while remaining a prototype.
animation-principles
Apply animation principles — easing, staging, follow-through — to one specific UI motion. Use when tuning how an animation feels. For product-wide duration and easing tokens use motion-system (design-systems); for a full interaction spec use micro-interaction-spec.
refactoring-ui
Audit and fix visual hierarchy, spacing, color, and depth in web UIs. Use when the user mentions "my UI looks off" (or amateur/unprofessional), "fix the design", "Tailwind styling", "color palette", "visual hierarchy", "design system", "spacing scale", or "component styling". Also trigger when building consistent…