accessibility-audit

accessibility-audit is a skill for Claude Code from billy-enrizky/openbrowser-ai. It costs 70 tokens per session (3,703 once invoked), scanned B, original, MIT.

A web accessibility checker that reviews pages against WCAG 2.1, a common set of rules for making websites usable by people with disabilities. It checks headings, form labels, image descriptions, ARIA markup, page regions, and keyboard navigation.

In plain words
What is it for?
Use it to review WCAG compliance, check screen-reader support, inspect ARIA attributes, and test keyboard access.
Why use it?
It finds barriers that can make a website difficult to use with screen readers, keyboards, or other assistive technology. This makes accessibility problems easier to locate and fix.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the openbrowser plugin — 7 skills shipped together

Good fit Use it to review WCAG compliance, check screen-reader support, inspect ARIA attributes, and test keyboard access.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/billy-enrizky/openbrowser-ai/accessibility-audit
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 billy-enrizky/openbrowser-ai --skill accessibility-audit
Clone the repo
git clone --depth 1 https://github.com/billy-enrizky/openbrowser-ai

Made for: Claude Code.

Or install openbrowser, the plugin that ships this one along with the rest of its 7 skills.

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 accessibility-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/billy-enrizky/openbrowser-ai/accessibility-audit/github.svg)](https://agentmods.dev/skills/billy-enrizky/openbrowser-ai/accessibility-audit)
Your own site
<a href="https://agentmods.dev/skills/billy-enrizky/openbrowser-ai/accessibility-audit"><img src="https://agentmods.dev/badge/skills/billy-enrizky/openbrowser-ai/accessibility-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.

agentmods 80×15 button for accessibility-audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/billy-enrizky/openbrowser-ai/accessibility-audit"><img src="https://agentmods.dev/badge/skills/billy-enrizky/openbrowser-ai/accessibility-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,703 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 Tool Misuse · line 31
    Tool calls are chained to bypass individual safety checks or escalate capabilities beyond what any single tool call would allow.
    Fix: Limit tool chaining depth and validate the output of each tool before passing it to the next. Require explicit user approval for multi-step chains.
  • high YARA Match · line 397
    YARA rule matched a known malware signature (reverse shell, backdoor, ransomware, C2 framework, or info stealer).
    Fix: Remove the malware payload or compromised file entirely. Investigate how it entered the skill and audit all other artifacts for additional indicators of compromise.
  • medium Rogue Agent · line 8
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
  • low Supply Chain · line 31
    Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.
    Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
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 $0.00070 $0.03703
Opus 5 $0.00035 $0.01852
Sonnet 5 $0.00014 $0.00741
Haiku 4.5 $0.00007 $0.00370

Measured 9d ago against content hash e6bed378299b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade B, and why

accessibility-audit scanned grade B with 2 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 9d 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.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://raw.githubusercontent.com/billy-enrizky/openbrowser-ai/main/install.sh | sh

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

allowed-tools: Bash(openbrowser-ai:*) Bash(curl:*) Bash(uv:*) Bash(irm:*) Read Write
plugin/skills/accessibility-audit/SKILL.md · 411 lines

How it starts

The opening of the file, as written. The whole thing — 411 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Accessibility Audit

Audit web pages for accessibility issues following WCAG 2.1 guidelines using Python code execution. Checks heading structure, form labels, image alt text, ARIA attributes, landmark regions, and keyboard navigation.

All code runs via openbrowser-ai -c. The daemon starts automatically and persists variables across calls. All browser functions are async -- use await.

The CLI daemon also persists cookies and login state in ~/.config/openbrowser/profiles/daemon/storage_state.json, so authenticated sessions can be reused across later runs.

Setup

Before running, verify openbrowser-ai is installed:

openbrowser-ai --help

If not found, install:

# macOS/Linux
curl -fsSL https://raw.githubusercontent.com/billy-enrizky/openbrowser-ai/main/install.sh | sh

# Windows (PowerShell)
irm https://raw.githubusercontent.com/billy-enrizky/openbrowser-ai/main/install.ps1 | iex

Workflow

Step 1 -- Navigate and initialize audit

openbrowser-ai -c - <<'EOF'
await navigate("https://example.com")
state = await browser.get_browser_state_summary()
print(f"Auditing: {state.title} ({state.url})")

# Store all findings
audit = {
    "url": state.url,
    "title": state.title,
    "issues": [],
    "checks": {}
}
EOF

Step 2 -- Check heading structure

openbrowser-ai -c - <<'EOF'
headings_result = await evaluate("""
(function(){
  const headings = Array.from(document.querySelectorAll("h1,h2,h3,h4,h5,h6"));
  const issues = [];
  let prevLevel = 0;
  const h1Count = headings.filter(h => h.tagName === "H1").length;

  if (h1Count === 0) issues.push("No h1 element found");
  if (h1Count > 1) issues.push("Multiple h1 elements: " + h1Count);

  headings.forEach(h => {
    const level = parseInt(h.tagName[1]);
    if (prevLevel > 0 && level > prevLevel + 1)
      issues.push("Skipped level: h" + prevLevel + " -> h" + level + " (\"" + h.textContent.trim().substring(0, 50) + "\")");
    if (!h.textContent.trim())
      issues.push("Empty heading: " + h.tagName);
    prevLevel = level;
  });

  return {
    total: headings.length,
    h1Count,
    hierarchy: headings.map(h => ({ tag: h.tagName, text: h.textContent.trim().substring(0, 80) })),
    issues
  };
})()
""")

audit["checks"]["headings"] = headings_result
for issue in headings_result.get("issues", []):
    audit["issues"].append({"check": "headings", "wcag": "1.3.1", "issue": issue})
    print(f"[HEADINGS] {issue}")

if not headings_result.get("issues"):
    print("[HEADINGS] PASS")
EOF

Read the full file on GitHub · 411 lines

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. 9d ago First seen · 411 lines · 70 tokens per session scan B e6bed378299b

Subscribe to this mod's changes

accessibility-audit is a skill published in the GitHub repository billy-enrizky/openbrowser-ai (241 stars, last pushed 2mo ago), licensed MIT. It adds 70 tokens to every session and 3,703 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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