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 atuljha23/holocron --skill a11y-checklistgit clone --depth 1 https://github.com/atuljha23/holocronWrote 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/atuljha23/holocron/a11y-checklist)<a href="https://agentmods.dev/skills/atuljha23/holocron/a11y-checklist"><img src="https://agentmods.dev/badge/skills/atuljha23/holocron/a11y-checklist/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/atuljha23/holocron/a11y-checklist"><img src="https://agentmods.dev/badge/skills/atuljha23/holocron/a11y-checklist.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 | $0.00038 | $0.00915 |
| Opus 5 | $0.00019 | $0.00458 |
| Sonnet 5 | $0.00008 | $0.00183 |
| Haiku 4.5 | $0.00004 | $0.00092 |
Grade A, and why
a11y-checklist 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 10d 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 — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Accessibility checklist (WCAG 2.2 AA)
Use this as a walk-through, top to bottom. If you can't answer "yes" or "N/A" for a line, fix it.
Semantics
- The element matches the intent.
<button>for actions.<a>for navigation. Lists use<ul>/<ol>. Landmarks use<main>/<nav>/<header>/<footer>/<aside>. - Headings form a valid outline — one
<h1>, no skipped levels. - Forms have
<label>s (oraria-labelledby). Placeholder is not a label.
Keyboard
- Every interactive element is reachable by
Tab. - Focus order matches visual order.
- No focus traps. Modals trap focus only while open and restore on close.
- Focus is visible (outline, ring, or theme equivalent). Don't remove
:focus-visiblewithout replacement. - Keyboard shortcuts don't collide with screen-reader virtual cursor.
Names & descriptions
- Every interactive control has an accessible name. Icon-only buttons:
aria-label. - Images: meaningful
alt; decorativealt="". - Form errors are programmatically associated via
aria-describedby.
States
-
aria-expanded,aria-selected,aria-pressed,aria-checked,aria-invalidreflect the current state and update as it changes. - Loading states have
aria-busyor a live region announcement. - Async status changes are announced in a
role="status"orrole="alert"live region (usealertsparingly — it's interruptive).
Contrast
- Normal text ≥ 4.5:1 vs background.
- Large text (≥ 18pt or 14pt bold) ≥ 3:1.
- UI components (form borders, focus rings, icon glyphs) ≥ 3:1.
- Don't rely on color alone to convey meaning — error state must have an icon or text too.
Motion
- Respect
prefers-reduced-motion. No auto-animating carousels, parallax, or transitions without the opt-out. - Videos under 5s ok; longer needs pause/stop controls.
- No flashing over 3 times per second in any region larger than ~25% of the viewport.
Structure & navigation
- Page has a
<main>landmark and a sensiblelangon<html>. - Skip-to-content link at the top (or equivalent landmark structure).
- Page title is descriptive and unique per route.
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.
- 10d ago First seen · 66 lines · 38 tokens per session scan A e218d825f30f
a11y-checklist is a skill published in the GitHub repository atuljha23/holocron (2 stars, last pushed 4mo ago), licensed MIT. It adds 38 tokens to every session and 915 once invoked, about $0.0002 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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