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 helderberto/agent-skills --skill a11y-auditgit clone --depth 1 https://github.com/helderberto/agent-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/helderberto/agent-skills/a11y-audit)<a href="https://agentmods.dev/skills/helderberto/agent-skills/a11y-audit"><img src="https://agentmods.dev/badge/skills/helderberto/agent-skills/a11y-audit/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/helderberto/agent-skills/a11y-audit"><img src="https://agentmods.dev/badge/skills/helderberto/agent-skills/a11y-audit.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00085 | $0.00284 |
| Opus 5 | $0.00043 | $0.00142 |
| Sonnet 5 | $0.00017 | $0.00057 |
| Haiku 4.5 | $0.00009 | $0.00028 |
Grade A, and why
a11y-audit 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 5d 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
Accessibility Audit
Workflow
- Detect framework from
package.json(React, Vue, Svelte) - Run static analysis -- grep JSX/TSX/HTML files for violations
- If dev server is running, optionally run axe-core CLI:
npx @axe-core/cli@4 http://localhost:3000 - Report findings grouped by severity
Output format
Group by WCAG criterion:
- Critical (A) -- blocks assistive technology users
- Serious (AA) -- significantly impacts usability
- Suggestions -- best practice improvements
Use file:line references. Include the fix for each finding. Prioritize keyboard navigation and screen reader issues; never auto-fix -- show what to change and why.
Error Handling
- Framework undetected -- scan all
.html,.jsx,.tsx,.vuefiles
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.
- 5d ago Changed · +18 tokens per session bf45f998ebfa
- 9d ago First seen · 30 lines · 67 tokens per session scan A 2ed4ba5424e8
a11y-audit is a skill published in the GitHub repository helderberto/agent-skills (14 stars, last pushed 7d ago), licensed MIT. It adds 85 tokens to every session and 284 once invoked, about $0.0004 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.
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