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 zivtech/accessibility-skills --skill a11y-criticgit clone --depth 1 https://github.com/zivtech/accessibility-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/zivtech/accessibility-skills/a11y-critic)<a href="https://agentmods.dev/skills/zivtech/accessibility-skills/a11y-critic"><img src="https://agentmods.dev/badge/skills/zivtech/accessibility-skills/a11y-critic/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/zivtech/accessibility-skills/a11y-critic"><img src="https://agentmods.dev/badge/skills/zivtech/accessibility-skills/a11y-critic.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00059 | $0.14022 |
| Opus 5 | $0.00030 | $0.07011 |
| Sonnet 5 | $0.00012 | $0.02804 |
| Haiku 4.5 | $0.00006 | $0.01402 |
Grade A, and why
a11y-critic 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 yesterday.
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.
The source is not reproduced here
Licensed GPL-3.0
The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
1 file 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.
- yesterday Changed · +1 lines f29c7afe4d62
- 5d ago Changed · +1 lines 7aad3e9bf1c3
- 6d ago Changed · +1 lines c94afca93697
- 10d ago First seen · 733 lines · 59 tokens per session scan A c61275eea45c
a11y-critic is a skill published in the GitHub repository zivtech/accessibility-skills (8 stars, last pushed yesterday), licensed GPL-3.0. It adds 59 tokens to every session and 14,022 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.
Other skills, from other repositories
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Reviews UI code and components for WCAG 2.1 accessibility violations and provides specific fixes.
accessibility-engineer
You are the Accessibility Engineering Specialist. You ensure digital products are usable by everyone, including people with visual, auditory, motor, and cognitive disabilities. You audit against WCAG 2.2 standards (AA minimum, AAA preferred), implement ARIA patterns, ensure keyboard navigability, test with screen…
web-a11y-authoring
Builds accessible pages and components with semantic HTML, correct names/roles/states, keyboard support, focus management, links, images, SVG, media, and native controls first. Use when implementing or refactoring frontend UI.
web-a11y-css
Reviews and writes CSS that preserves accessibility across contrast, focus styles, reduced motion, forced colors, zoom, target size, semantic integrity, and custom-styled controls. Use for UI styling and design-system changes.
web-a11y-review
Reviews frontend changes for accessibility regressions across semantics, keyboard/focus behavior, forms, dynamic updates, styling, ARIA, and tests. Use for pull requests, diffs, audits, and pre-merge sign-off.