accessibility

A set of rules for making HTML and JavaScript interfaces accessible under WCAG 2.1 AA, a widely used web accessibility standard.

In plain words
What is it for?
Use it when building or reviewing web pages. It covers heading structure, navigation and main-content landmarks, accessible buttons, and form labels.
Why use it?
It prevents common barriers such as skipped heading levels, missing page landmarks, and unnamed icon-only buttons.

Cursor rule for Claude Code

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.

agentmods
npx agentmods add rules/eliornl/rolemule/accessibility
Clone the repo
git clone --depth 1 https://github.com/eliornl/rolemule

Made for: Claude Code.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 452 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00452
Opus 5 $0.00000 $0.00226
Sonnet 5 $0.00000 $0.00090
Haiku 4.5 $0.00000 $0.00045

Measured yesterday against content hash 95bf2ed8508f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

accessibility 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.

.claude/rules/accessibility.mdc · 56 lines

What it actually says

Accessibility (WCAG 2.1 AA)

Target: 100% Lighthouse accessibility score. Run npx lighthouse http://localhost:8000/ --only-categories=accessibility to verify.

Heading Hierarchy — Never Skip Levels

<!-- ✅ Correct -->
<h1>Page Title</h1>
<h2>Section</h2>
<h3>Subsection</h3>

<!-- ❌ Wrong — skips h2 -->
<h1>Page Title</h1>
<h3>Section</h3>

Use CSS classes to change visual size without changing semantic level: <h2 class="h4">.

Page Landmarks — Required on Every Page

<body>
    <nav>...</nav>
    <main><!-- all primary content --></main>
    <footer>...</footer>
</body>

<main> must NOT include <nav> or <footer>.

Buttons and Interactive Elements

<!-- ✅ Icon-only button — must have aria-label -->
<button aria-label="Delete application" data-action="delete" data-id="...">
    <i class="fas fa-trash"></i>
</button>

<!-- ❌ Wrong — no accessible name -->
<button><i class="fas fa-trash"></i></button>
  • All <input> / <select> / <textarea> must have associated <label for="..."> or aria-label
  • Links must have descriptive text, not just "click here"

Images and Icons

  • Decorative: <img alt=""> (empty string, not missing)
  • Informative: descriptive alt text
  • Icon fonts (Font Awesome): decorative unless they are the only content of a button

Color and Contrast

  • Normal text: minimum 4.5:1 contrast ratio
  • Large text (18px+ or 14px+ bold): minimum 3:1
  • Never use color as the sole means to convey information (add icons or text labels)
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. yesterday First seen · 56 lines · 0 tokens per session scan A 95bf2ed8508f

Subscribe to this mod's changes

accessibility is a cursor rule published in the GitHub repository eliornl/rolemule (37 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 452 tokens. 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.

Related

Other cursor rules, from other repositories

cursorrules

Agent2 is a framework for building production AI agents with typed HTTP APIs. PydanticAI handles the agent loop. Agent2 handles everything else: API, auth, pause/resume, approvals, provider routing, knowledge search.

Artesiana/agent2 · 399 tokens

product-manager

Holistic product leader who owns the full product lifecycle — from discovery and strategy through roadmap, stakeholder alignment, go-to-market, and outcome measurement. Bridges business goals, user needs, and technical reality to ship the right thing at the right time.

Treevu-ai/cli-market-world · 5,350 tokens

api-tester

Expert API testing specialist focused on comprehensive API validation, performance testing, and quality assurance across all systems and third-party integrations.

Treevu-ai/cli-market-world · 23 tokens

developer-advocate

Expert developer advocate specializing in building developer communities, creating compelling technical content, optimizing developer experience (DX), and driving platform adoption through authentic engineering engagement. Bridges product and engineering teams with external developers.

Treevu-ai/cli-market-world · 38 tokens

architectural-and-structural-rules

The project follows a layered architecture with clear separation of concerns.

mrharishkumar/fastapi-cursor-boilerplate · 559 tokens

angular-20

This rule provides comprehensive best practices and coding standards for Angular development, focusing on modern TypeScript, standalone components, signals, and performance optimizations.

angular/angular · 0 tokens