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/a11y-audit

Slash Command Source

Scan a frontend project for WCAG 2.2 accessibility issues, show fixes, and optionally check color contrast.

Usage

/a11y-audit                     # Scan current project
/a11y-audit ./src               # Scan specific directory
/a11y-audit ./src --fix         # Scan and auto-fix what's possible

What It Does

Step 1: Scan

Run the a11y scanner on the target directory:

python3 {skill_path}/scripts/a11y_scanner.py {path} --json

Parse the JSON output. Group findings by severity (critical → serious → moderate → minor).

Display a summary: 

A11y Audit: ./src
  Critical: 3 | Serious: 7 | Moderate: 12 | Minor: 5
  Files scanned: 42 | Files with issues: 15

Step 2: Fix

For each finding (starting with critical):

  1. Read the affected file
  2. Show the violation with context (before)
  3. Apply the fix from references/framework-a11y-patterns.md
  4. Show the result (after)

Auto-fixable issues (apply without asking): - Missing alt="" on decorative images - Missing lang attribute on <html> - tabindex values > 0 → set to 0 - Missing type="button" on non-submit buttons - Outline removal without replacement → add :focus-visible styles

Issues requiring user input (show fix, ask to apply): - Missing alt text (need description from user) - Missing form labels (need label text) - Heading restructuring (may affect layout) - ARIA role changes (may affect functionality)

Step 3: Contrast Check

If CSS files are present, run the contrast checker:

python3 {skill_path}/scripts/contrast_checker.py --batch {path}

For each failing color pair, suggest accessible alternatives.

Step 4: Report

Generate a markdown report at a11y-report.md: - Executive summary (pass/fail, issue counts) - Per-file findings with before/after diffs - Remaining manual review items - WCAG criteria coverage

Skill Reference

  • engineering-team/a11y-audit/SKILL.md
  • engineering-team/a11y-audit/scripts/a11y_scanner.py
  • engineering-team/a11y-audit/scripts/contrast_checker.py
  • engineering-team/a11y-audit/references/wcag-quick-ref.md
  • engineering-team/a11y-audit/references/aria-patterns.md
  • engineering-team/a11y-audit/references/framework-a11y-patterns.md