accessibility-testing

This accessibility testing skill provides a comprehensive framework for ensuring software inclusivity by validating against WCAG 2.2 guidelines. It is designed for quality engineers, developers, and product teams aiming to satisfy legal compliance requirements like ADA and Section 508. The skill orchestrates automated testing using axe-core, pa11y, and Lighthouse, while emphasizing the necessity of manual verification for keyboard navigation and screen reader compatibility. By focusing on the POUR principles—Perceivable, Operable, Understandable, and Robust—the agent helps identify critical barriers for users with disabilities.

• Performs automated accessibility audits using axe-core and pa11y to detect common violations.

• Validates keyboard-only navigation flows and focus indicator visibility.

• Checks color contrast ratios to meet AA and AAA compliance standards.

• Provides structured testing checklists for VoiceOver, NVDA, and JAWS screen readers.

• Integrates with CI/CD pipelines to prevent regressions in accessibility standards.

• Input expectations: Target URLs or local web application environments.

• Output formats: JSON-based violation reports with remediation guidance.

• Constraints: Automated tools typically catch 30-50% of issues; manual audit is required for complete compliance.

• Usage: Ideal for shift-left testing, pre-release verification, and ongoing maintenance of accessible digital interfaces.