Accessibility (a11y) workflow skill. Use this skill when the user needs Audit and improve web accessibility following WCAG 2.1 guidelines. Use when asked to "improve accessibility", "a11y audit", "WCAG compliance", "screen reader support", "keyboard navigation", or "make accessible". Do NOT use for SEO (use seo), performance (use core-web-vitals), or comprehensive site audits covering multiple areas (use web-quality-audit) and the operator should preserve the upstream workflow, copied support files, and provenance before merging or handing off.
Installer avec Codex ou Claude Copiez ce prompt, collez-le dans Codex, Claude ou un autre assistant, puis laissez-le vérifier la page du skill et l'installer pour vous.
Une commande directe contourne le prompt de vérification. Examinez la source avant de l'exécuter.
Accessibility (a11y) workflow skill. Use this skill when the user needs Audit and improve web accessibility following WCAG 2.1 guidelines. Use when asked to "improve accessibility", "a11y audit", "WCAG compliance", "screen reader support", "keyboard navigation", or "make accessible". Do NOT use for SEO (use seo), performance (use core-web-vitals), or comprehensive site audits covering multiple areas (use web-quality-audit) and the operator should preserve the upstream workflow, copied support files, and provenance before merging or handing off.
This public intake copy packages packages/skills-catalog/skills/(quality)/web-accessibility from https://github.com/tech-leads-club/agent-skills into the native Omni Skills editorial shape without hiding its origin.
Use it when the operator needs the upstream workflow, support files, and repository context to stay intact while the public validator and private enhancer continue their normal downstream flow.
This intake keeps the copied upstream files intact and uses the external_source block in metadata.json plus ORIGIN.md as the provenance anchor for review.
Accessibility (a11y) Comprehensive accessibility guidelines based on WCAG 2.1 and Lighthouse accessibility audits. Goal: make content usable by everyone, including people with disabilities.
Imported source sections that did not map cleanly to the public headings are still preserved below or in the support files. Notable imported sections: Conformance levels, Perceivable, Operable, Understandable, Robust, Testing checklist.
When to Use This Skill
Use this section as the trigger filter. It should make the activation boundary explicit before the operator loads files, runs commands, or opens a pull request.
Use when the request clearly matches the imported source intent: Audit and improve web accessibility following WCAG 2.1 guidelines. Use when asked to "improve accessibility", "a11y audit", "WCAG compliance", "screen reader support", "keyboard navigation", or "make accessible". Do....
Use when the operator should preserve upstream workflow detail instead of rewriting the process from scratch.
Use when provenance needs to stay visible in the answer, PR, or review packet.
Use when copied upstream references, examples, or scripts materially improve the answer.
Use when the workflow should remain reviewable in the public intake repo before the private enhancer takes over.
Operating Table
Situation
Start here
Why it matters
First-time use
metadata.json
Confirms repository, branch, commit, and imported path through the external_source block before touching the copied workflow
Provenance review
ORIGIN.md
Gives reviewers a plain-language audit trail for the imported source
Workflow execution
references/WCAG.md
Starts with the smallest copied file that materially changes execution
Supporting context
references/WCAG.md
Adds the next most relevant copied source file without loading the entire package
Handoff decision
## Related Skills
Helps the operator switch to a stronger native skill when the task drifts
Workflow
This workflow is intentionally editorial and operational at the same time. It keeps the imported source useful to the operator while still satisfying the public intake standards that feed the downstream enhancer flow.
Confirm the user goal, the scope of the imported workflow, and whether this skill is still the right router for the task.
Read the overview and provenance files before loading any copied upstream support files.
Load only the references, examples, prompts, or scripts that materially change the outcome for the current request.
Execute the upstream workflow while keeping provenance and source boundaries explicit in the working notes.
Validate the result against the upstream expectations and the evidence you can point to in the copied files.
Escalate or hand off to a related skill when the work moves out of this imported workflow's center of gravity.
Before merge or closure, record what was used, what changed, and what the reviewer still needs to verify.
Imported Workflow Notes
Imported: Conformance levels
Level
Requirement
Target
A
Minimum accessibility
Must pass
AA
Standard compliance
Should pass (legal requirement in many jurisdictions)
AAA
Enhanced accessibility
Nice to have
Examples
Example 1: Ask for the upstream workflow directly
Use @accessibility to handle <task>. Start from the copied upstream workflow, load only the files that change the outcome, and keep provenance visible in the answer.
Explanation: This is the safest starting point when the operator needs the imported workflow, but not the entire repository.
Example 2: Ask for a provenance-grounded review
Review @accessibility against metadata.json and ORIGIN.md, then explain which copied upstream files you would load first and why.
Explanation: Use this before review or troubleshooting when you need a precise, auditable explanation of origin and file selection.
Example 3: Narrow the copied support files before execution
Use @accessibility for <task>. Load only the copied references, examples, or scripts that change the outcome, and name the files explicitly before proceeding.
Explanation: This keeps the skill aligned with progressive disclosure instead of loading the whole copied package by default.
Example 4: Build a reviewer packet
Review @accessibility using the copied upstream files plus provenance, then summarize any gaps before merge.
Explanation: This is useful when the PR is waiting for human review and you want a repeatable audit packet.
Best Practices
Treat the generated public skill as a reviewable packaging layer around the upstream repository. The goal is to keep provenance explicit and load only the copied source material that materially improves execution.
Principle - Description
Perceivable - Content can be perceived through different senses
Operable - Interface can be operated by all users
Understandable - Content and interface are understandable
Robust - Content works with assistive technologies
Keep the imported skill grounded in the upstream repository; do not invent steps that the source material cannot support.
Prefer the smallest useful set of support files so the workflow stays auditable and fast to review.
Imported Operating Notes
Imported: WCAG Principles: POUR
Principle
Description
Perceivable
Content can be perceived through different senses
Operable
Interface can be operated by all users
Understandable
Content and interface are understandable
Robust
Content works with assistive technologies
Troubleshooting
Problem: The operator skipped the imported context and answered too generically
Symptoms: The result ignores the upstream workflow in packages/skills-catalog/skills/(quality)/web-accessibility, fails to mention provenance, or does not use any copied source files at all.
Solution: Re-open metadata.json, ORIGIN.md, and the most relevant copied upstream files. Check the external_source block first, then restate the provenance before continuing.
Problem: The imported workflow feels incomplete during review
Symptoms: Reviewers can see the generated SKILL.md, but they cannot quickly tell which references, examples, or scripts matter for the current task.
Solution: Point at the exact copied references, examples, scripts, or assets that justify the path you took. If the gap is still real, record it in the PR instead of hiding it.
Problem: The task drifted into a different specialization
Symptoms: The imported skill starts in the right place, but the work turns into debugging, architecture, design, security, or release orchestration that a native skill handles better.
Solution: Use the related skills section to hand off deliberately. Keep the imported provenance visible so the next skill inherits the right context instead of starting blind.
Related Skills
@ai-cold-outreach - Use when the work is better handled by that native specialization after this imported skill establishes context.
@ai-pricing - Use when the work is better handled by that native specialization after this imported skill establishes context.
@ai-sdr - Use when the work is better handled by that native specialization after this imported skill establishes context.
@ai-seo - Use when the work is better handled by that native specialization after this imported skill establishes context.
Additional Resources
Use this support matrix and the linked files below as the operator packet for this imported skill. They should reflect real copied source material, not generic scaffolding.
Resource family
What it gives the reviewer
Example path
references
copied reference notes, guides, or background material from upstream
references/WCAG.md
examples
worked examples or reusable prompts copied from upstream
examples/n/a
scripts
upstream helper scripts that change execution or validation
scripts/n/a
agents
routing or delegation notes that are genuinely part of the imported package
agents/n/a
assets
supporting assets or schemas copied from the source package
<!-- ❌ Missing alt --><imgsrc="chart.png" /><!-- ✅ Descriptive alt --><imgsrc="chart.png"alt="Bar chart showing 40% increase in Q3 sales" /><!-- ✅ Decorative image (empty alt) --><imgsrc="decorative-border.png"alt=""role="presentation" /><!-- ✅ Complex image with longer description --><figure><imgsrc="infographic.png"alt="2024 market trends infographic"aria-describedby="infographic-desc" /><figcaptionid="infographic-desc"><!-- Detailed description --></figcaption></figure>
Icon buttons need accessible names:
<!-- ❌ No accessible name --><button><svg><!-- menu icon --></svg></button><!-- ✅ Using aria-label --><buttonaria-label="Open menu"><svgaria-hidden="true"><!-- menu icon --></svg></button><!-- ✅ Using visually hidden text --><button><svgaria-hidden="true"><!-- menu icon --></svg><spanclass="visually-hidden">Open menu</span></button>
<!-- ❌ Only color indicates error --><inputclass="error-border" /><style>.error-border {
border-color: red;
}
</style><!-- ✅ Color + icon + text --><divclass="field-error"><inputaria-invalid="true"aria-describedby="email-error" /><spanid="email-error"class="error-message"><svgaria-hidden="true"><!-- error icon --></svg>
Please enter a valid email address
</span></div>
Media alternatives (1.2)
<!-- Video with captions --><videocontrols><sourcesrc="video.mp4"type="video/mp4" /><trackkind="captions"src="captions.vtt"srclang="en"label="English"default /><trackkind="descriptions"src="descriptions.vtt"srclang="en"label="Descriptions" /></video><!-- Audio with transcript --><audiocontrols><sourcesrc="podcast.mp3"type="audio/mp3" /></audio><details><summary>Transcript</summary><p>Full transcript text...</p></details>
Imported: Operable
Keyboard accessible (2.1)
All functionality must be keyboard accessible:
// ❌ Only handles click
element.addEventListener('click', handleAction)
// ✅ Handles both click and keyboard
element.addEventListener('click', handleAction)
element.addEventListener('keydown', (e) => {
if (e.key === 'Enter' || e.key === ' ') {
e.preventDefault()
handleAction()
}
})
<body><ahref="#main-content"class="skip-link">Skip to main content</a><header><!-- navigation --></header><mainid="main-content"tabindex="-1"><!-- main content --></main></body>
<!-- ❌ No language specified --><html><!-- ✅ Language specified --><htmllang="en"><!-- ✅ Language changes within page --><p>The French word for hello is <spanlang="fr">bonjour</span>.</p></html></html>
Consistent navigation (3.2.3)
<!-- Navigation should be consistent across pages --><navaria-label="Main"><ul><li><ahref="/"aria-current="page">Home</a></li><li><ahref="/products">Products</a></li><li><ahref="/about">About</a></li></ul></nav>
Form labels (3.3.2)
<!-- ❌ No label association --><inputtype="email"placeholder="Email" /><!-- ✅ Explicit label --><labelfor="email">Email address</label><inputtype="email"id="email"name="email"autocomplete="email"required /><!-- ✅ Implicit label --><label>
Email address
<inputtype="email"name="email"autocomplete="email"required /></label><!-- ✅ With instructions --><labelfor="password">Password</label><inputtype="password"id="password"aria-describedby="password-requirements" /><pid="password-requirements">Must be at least 8 characters with one number.</p>
Error handling (3.3.1, 3.3.3)
<!-- Announce errors to screen readers --><formnovalidate><divclass="field"aria-live="polite"><labelfor="email">Email</label><inputtype="email"id="email"aria-invalid="true"aria-describedby="email-error" /><pid="email-error"class="error"role="alert">Please enter a valid email address (e.g., name@example.com)</p></div></form>
// Focus first error on submit
form.addEventListener('submit', (e) => {
const firstError = form.querySelector('[aria-invalid="true"]')
if (firstError) {
e.preventDefault()
firstError.focus()
// Announce error summaryconst errorSummary = document.getElementById('error-summary')
errorSummary.textContent = `${errors.length} errors found. Please fix them and try again.`
errorSummary.focus()
}
})
<!-- Status updates --><divaria-live="polite"aria-atomic="true"class="status"><!-- Content updates announced to screen readers --></div><!-- Urgent alerts --><divrole="alert"aria-live="assertive"><!-- Interrupts current announcement --></div>
