a11y-auditor

a11y-auditor is a skill for Claude Code from rajitsaha/100xprism. It costs 88 tokens per session (1,869 once invoked), scanned A, original, MIT.

A set of instructions for checking a webpage, component, or design against WCAG 2.2 Level AA accessibility guidance. WCAG is a standard for making digital products usable by people with disabilities.

In plain words
What is it for?
Use it to audit HTML, JSX, Vue, Svelte, built pages, or screenshots and receive prioritized fixes, focus-order checks, contrast results, ARIA guidance, and a screen-reader test plan.
Why use it?
It finds barriers such as poor contrast, missing image descriptions, broken keyboard access, and incorrect screen-reader behavior before release.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to audit HTML, JSX, Vue, Svelte, built pages, or screenshots and receive prioritized fixes, focus-order checks, contrast results, ARIA guidance, and a screen-reader test plan.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rajitsaha/100xprism/a11y-auditor
Install

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.

Any agent
npx skills add rajitsaha/100xprism --skill a11y-auditor
Clone the repo
git clone --depth 1 https://github.com/rajitsaha/100xprism

Made for: Claude Code.

Wrote 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.

agentmods badge for a11y-auditor

README.md
[![agentmods](https://agentmods.dev/badge/skills/rajitsaha/100xprism/a11y-auditor/github.svg)](https://agentmods.dev/skills/rajitsaha/100xprism/a11y-auditor)
Your own site
<a href="https://agentmods.dev/skills/rajitsaha/100xprism/a11y-auditor"><img src="https://agentmods.dev/badge/skills/rajitsaha/100xprism/a11y-auditor/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.

agentmods 80×15 button for a11y-auditor

Your own site · 80×15
<a href="https://agentmods.dev/skills/rajitsaha/100xprism/a11y-auditor"><img src="https://agentmods.dev/badge/skills/rajitsaha/100xprism/a11y-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 88 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,869 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 4 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Anti-Refusal · line 41
    Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.
    Fix: Remove instructions that suppress warnings, disclaimers, or ethical commentary. Let the agent surface safety-relevant caveats to the user.
  • medium MCP Rug Pull · line 120
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 123
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 126
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00088 $0.01869
Opus 5 $0.00044 $0.00934
Sonnet 5 $0.00018 $0.00374
Haiku 4.5 $0.00009 $0.00187

Measured 12d ago against content hash eb27a1631d20, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

a11y-auditor 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 12d 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.

.agents/skills/a11y-auditor/SKILL.md · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Audit the target against WCAG 2.2 Level AA plus pragmatic real-world a11y patterns. Report findings as actionable fixes, not academic citations.

Required Input

At least one of:

  • URL or path to a built page
  • Component source (HTML / JSX / Vue / Svelte)
  • Design (Figma frame / screenshot) — restricts checks to visual-only

Optional context that sharpens the audit: target users (e.g. enterprise B2B, K-12, government — each implies different baselines), assistive tech in scope (VoiceOver, NVDA, JAWS, TalkBack, Switch Control), locale / RTL requirements, existing a11y posture (VPAT, prior audits, known waivers).

Audit Coverage

1. Perceivable

  • Contrast — text ≥ 4.5:1 (body) / 3:1 (large/UI). Compute ratios; flag any below.
  • Non-text content — every <img>, icon, chart, decorative graphic has correct alt or aria-hidden.
  • Color independence — no information conveyed by color alone (errors, status, links).
  • Text resize — usable up to 200% zoom without horizontal scroll at 1280px.
  • Reflow — content reflows at 320 CSS px without loss of function.

2. Operable

  • Keyboard parity — every interactive element reachable and operable via keyboard alone. No traps.
  • Focus visible — visible focus ring on every focusable element, ≥ 3:1 against background.
  • Focus order — DOM order matches visual order; tab through and map it.
  • Target size — 24×24 CSS px minimum (WCAG 2.2 SC 2.5.8), 44×44 strongly preferred for touch.
  • Skip links / landmarks<header>, <nav>, <main>, <footer> and skip-to-content link.
  • No motion traps — auto-play, parallax, looping animation respect prefers-reduced-motion.

3. Understandable

  • Language<html lang> set; switches declared with lang attribute.
  • Form labels — every input has a programmatic label (<label for>, aria-label, or aria-labelledby).
  • Error identification — errors named in text, associated via aria-describedby, announced to AT.
  • Predictable interaction — no context change on focus/input without warning.
  • Consistent navigation — same nav patterns across pages.

Read the full file on GitHub · 148 lines

Files

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.

Changes

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.

  1. 12d ago First seen · 148 lines · 88 tokens per session scan A eb27a1631d20

Subscribe to this mod's changes

a11y-auditor is a skill published in the GitHub repository rajitsaha/100xprism (10 stars, last pushed 12d ago), licensed MIT. It adds 88 tokens to every session and 1,869 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 2026-08-31.