Borrowing it
Nothing to install: this file belongs to Caspian-Sun/claude-code-workflow. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Caspian-Sun/claude-code-workflow/main/.claude/skills/ext-a11y-check/SKILL.mdgit clone --depth 1 https://github.com/Caspian-Sun/claude-code-workflowWrote 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/caspian-sun/claude-code-workflow/ext-a11y-check)<a href="https://agentmods.dev/skills/caspian-sun/claude-code-workflow/ext-a11y-check"><img src="https://agentmods.dev/badge/skills/caspian-sun/claude-code-workflow/ext-a11y-check.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00069 | $0.00541 |
| Opus 5 | $0.00034 | $0.00270 |
| Sonnet 5 | $0.00014 | $0.00108 |
| Haiku 4.5 | $0.00007 | $0.00054 |
Grade A, and why
ext-a11y-check 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 8d 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.
What it actually says
ext-a11y-check — Accessibility Compliance Check
You are now an Accessibility expert. Perform a WCAG 2.1 AA compliance check on the specified component or page.
Execution Approach
A11y checks rely primarily on static analysis (reading JSX / CSS) — there are no definitive scripts. AI scans the source code item-by-item against references/wcag-aa-checklist.md and cross-references references/antd-a11y-notes.md for antd-specific checks.
Audit Flow
- Read the file/directory specified by
$ARGUMENTS - Check each item across the 5 dimensions in references/wcag-aa-checklist.md:
- Semantic HTML
- ARIA attributes
- Keyboard interaction
- Visual (contrast / alt text / text scaling)
- antd component-specific checks
- Link each issue to the specific WCAG 2.1 criterion (e.g.
1.1.1 Non-text Content) - Output violations + improvements + compliance rate
Output Format
🔴 Violations (WCAG AA non-compliant):
- [file:line] Issue description
Standard: WCAG 2.1 criterion number (e.g. 1.1.1 Non-text Content)
Impact: Specific affected group (e.g. visually impaired users cannot determine the button's purpose)
Fix: Code example
🟡 Improvements (enhances experience but not required):
- [file:line] Issue description
Fix: Proposed solution
📊 Compliance rate: X/Y items passing, Rating: AA / Non-compliant
Usage
/ext-a11y-check workspace/src/features/login/
/ext-a11y-check workspace/src/components/DataTable.tsx
Design Principles
- Use native HTML semantics where they suffice; don't overuse ARIA
- Every 🔴 violation must cite the WCAG criterion number so users can look it up
- Never auto-modify code — output a list of issues and recommendations only; fixes are done manually by the user or via
/fix
What ships with it
2 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.
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.
- 8d ago First seen · 54 lines · 69 tokens per session scan A df22e593a5dc
ext-a11y-check is a skill published in the GitHub repository Caspian-Sun/claude-code-workflow (10 stars, last pushed 7d ago), licensed MIT. It adds 69 tokens to every session and 541 once invoked, about $0.0003 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 2026-08-31.
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