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 vibeeval/vibecosystem --skill accessibility-testinggit 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-testing)<a href="https://agentmods.dev/skills/vibeeval/vibecosystem/accessibility-testing"><img src="https://agentmods.dev/badge/skills/vibeeval/vibecosystem/accessibility-testing/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/vibeeval/vibecosystem/accessibility-testing"><img src="https://agentmods.dev/badge/skills/vibeeval/vibecosystem/accessibility-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
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 →
- medium MCP Rug Pull · line 264 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00031 | $0.02254 |
| Opus 5.5 | $0.00012 | $0.00902 |
| Sonnet 5.5 | $0.00006 | $0.00451 |
| Haiku 4.5 | $0.00003 | $0.00225 |
Grade A, and why
accessibility-testing 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 1mo 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 — 272 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Accessibility Testing
axe-core Setup
jest-axe (unit / component tests)
import { axe, toHaveNoViolations } from 'jest-axe'
import { render } from '@testing-library/react'
expect.extend(toHaveNoViolations)
test('LoginForm has no a11y violations', async () => {
const { container } = render(<LoginForm />)
const results = await axe(container)
expect(results).toHaveNoViolations()
})
playwright-axe (e2e)
import { test, expect } from '@playwright/test'
import AxeBuilder from '@axe-core/playwright'
test('homepage passes axe audit', async ({ page }) => {
await page.goto('/')
const results = await new AxeBuilder({ page })
.withTags(['wcag2a', 'wcag2aa', 'wcag21aa'])
.analyze()
expect(results.violations).toEqual([])
})
cypress-axe
// cypress/support/e2e.js
import 'cypress-axe'
// in test
cy.visit('/')
cy.injectAxe()
cy.checkA11y(null, {
runOnly: { type: 'tag', values: ['wcag2aa'] },
})
WCAG 2.2 AA Checklist — Top 20 Violations
| # | Criterion | Check |
|---|---|---|
| 1 | Images have alt text | <img alt="description"> or alt="" for decorative |
| 2 | Form inputs have labels | <label for> or aria-label or aria-labelledby |
| 3 | Color contrast ≥ 4.5:1 | Normal text; 3:1 for large text (18pt or 14pt bold) |
| 4 | Heading hierarchy | h1 → h2 → h3, no skipping levels |
| 5 | Keyboard focusable | All interactive elements reachable via Tab |
| 6 | Focus visible | :focus outline never outline: none without replacement |
| 7 | No keyboard trap | Tab can always exit modals, dropdowns, widgets |
| 8 | Skip navigation link | First focusable element: "Skip to main content" |
| 9 | Page has <title> |
Unique, descriptive per page |
| 10 | Language attribute | <html lang="en"> |
| 11 | Error identification | Form errors are text, not color-only |
| 12 | Error suggestions | Tell users how to fix the error |
| 13 | Link purpose clear | No "click here" or "read more" without context |
| 14 | Button text | No icon-only buttons without aria-label |
| 15 | Table headers | `<th scope="col |
| 16 | No seizure content | No flashing > 3 times/sec |
| 17 | Status messages | role="status" or aria-live for dynamic updates |
| 18 | Reflow at 400% zoom | Single column, no horizontal scroll |
| 19 | Text spacing adjustable | No overflow when line-height/letter-spacing increased |
| 20 | Timeout warning | Warn before session expires, allow extension |
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.
- 1mo ago First seen · 272 lines · 31 tokens per session scan A 5a1ccceea66c
accessibility-testing is a skill published in the GitHub repository vibeeval/vibecosystem (538 stars, last pushed 2mo ago), licensed MIT. It adds 31 tokens to every session and 2,254 once invoked, about $0.0001 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 2026-09-03.
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