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 agentmods add skills/vibeeval/vibecosystem/accessibility-patternsnpx skills add vibeeval/vibecosystem --skill accessibility-patternsgit clone --depth 1 https://github.com/vibeeval/vibecosystemWrote 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/vibeeval/vibecosystem/accessibility-patterns)<a href="https://agentmods.dev/skills/vibeeval/vibecosystem/accessibility-patterns"><img src="https://agentmods.dev/badge/skills/vibeeval/vibecosystem/accessibility-patterns.svg" alt="Measured on agentmods" 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 | $0.00024 | $0.01067 |
| Opus 5 | $0.00012 | $0.00534 |
| Sonnet 5 | $0.00005 | $0.00213 |
| Haiku 4.5 | $0.00002 | $0.00107 |
Grade A, and why
accessibility-patterns 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 2d 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 — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Accessibility Patterns
WCAG 2.2 AA Requirements
Perceivable
| Kriter | Kural | Kontrol |
|---|---|---|
| 1.1.1 | Non-text content alt text | <img alt="description"> |
| 1.3.1 | Semantic HTML | Headings, landmarks, lists |
| 1.4.3 | Color contrast | 4.5:1 normal text, 3:1 large |
| 1.4.11 | UI component contrast | 3:1 borders, icons |
Operable
| Kriter | Kural | Kontrol |
|---|---|---|
| 2.1.1 | Keyboard accessible | Tab, Enter, Space, Escape |
| 2.4.3 | Focus order | Logical tab sequence |
| 2.4.7 | Focus visible | Visible focus indicator |
| 2.5.8 | Target size | Min 24x24px (44x44px önerilir) |
Understandable
| Kriter | Kural | Kontrol |
|---|---|---|
| 3.1.1 | Language of page | <html lang="tr"> |
| 3.2.1 | On focus | No unexpected context change |
| 3.3.1 | Error identification | Clear error messages |
| 3.3.2 | Labels or instructions | Form labels visible |
ARIA Patterns
<!-- Dialog -->
<div role="dialog" aria-modal="true" aria-labelledby="title">
<h2 id="title">Confirm</h2>
<button aria-label="Close dialog">×</button>
</div>
<!-- Tabs -->
<div role="tablist">
<button role="tab" aria-selected="true" aria-controls="panel1">Tab 1</button>
<button role="tab" aria-selected="false" aria-controls="panel2">Tab 2</button>
</div>
<div role="tabpanel" id="panel1">Content 1</div>
<!-- Live region (dynamic updates) -->
<div aria-live="polite" aria-atomic="true">
3 new messages
</div>
Keyboard Navigation
// Focus trap (modal/dialog)
function useFocusTrap(ref: RefObject<HTMLElement>) {
useEffect(() => {
const focusable = ref.current?.querySelectorAll(
'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'
)
const first = focusable?.[0] as HTMLElement
const last = focusable?.[focusable.length - 1] as HTMLElement
function handleKeyDown(e: KeyboardEvent) {
if (e.key !== 'Tab') return
if (e.shiftKey && document.activeElement === first) {
e.preventDefault(); last.focus()
} else if (!e.shiftKey && document.activeElement === last) {
e.preventDefault(); first.focus()
}
}
ref.current?.addEventListener('keydown', handleKeyDown)
first?.focus()
return () => ref.current?.removeEventListener('keydown', handleKeyDown)
}, [ref])
}
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.
- 2d ago First seen · 145 lines · 24 tokens per session scan A 7150cab9eed2
accessibility-patterns is a skill published in the GitHub repository vibeeval/vibecosystem (530 stars, last pushed 27d ago), licensed MIT. It adds 24 tokens to every session and 1,067 once invoked, about $0.0001 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 2026-09-03.
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