accessibility-testing
WCAG 2.1/2.2 audit, axe, Lighthouse, manual testing, screen reader testing, and remediation
Profile →npx skills add cosmicstack-labs/mercury-agent-skills --skill accessibility-testing --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Accessibility Testing Systematically test and improve web accessibility. ## WCAG Guidelines (Quick Reference) | Level | Conformance | Target | |-------|-------------|--------| | A | Minimum | Must pass all A criteria | | AA | Standard | Legal standard (ADA, Section 508) | | AAA | Advanced | Highest level, not always achievable | ### Key Success Criteria - **1.1.1 (A)**: All non-text content has text alternative - **1.4.3 (AA)**: Color contrast ≥ 4.5:1 - **2.1.1 (A)**: All functionality via keyboard - **2.4.7 (AA)**: Visible focus indicators - **4.1.2 (A)**: Proper ARIA roles and attributes ## Testing Approach ### Automated (Catches ~30%) ```javascript // axe-core in CI const { axe } = require('jest-axe'); it('should have no accessibility violations', async () => { render(<MyComponent />); const results = await axe(document.body); expect(results).toHaveNoViolations(); }); ``` ### Manual (Catches ~40%) - Tab through all interactive elements - Test with high contrast mode - Zoom to 200% — no content should be cut off - Disable CSS — content should be in logical order ### Assistive Technology (Catches ~30%) - Test with VoiceOver (macOS/iOS) - Test with NVDA (Windows) - Test with keyb
- WCAG Guidelines (Quick Reference)
- Key Success Criteria
- Testing Approach
- Automated (Catches ~30%)
- Manual (Catches ~40%)
- Assistive Technology (Catches ~30%)
- Common Fixes
What does the accessibility-testing skill do?
WCAG 2.1/2.2 audit, axe, Lighthouse, manual testing, screen reader testing, and remediation
How do I install it?
Run `npx skills add cosmicstack-labs/mercury-agent-skills --skill accessibility-testing --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From cosmicstack-labs/mercury-agent-skills, a repository with 364 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.