aria-query provides a comprehensive, standardized map of ARIA (Accessible Rich Internet Applications) roles, states, and properties with their corresponding expected values. This mapping aids in validating ARIA usage within web applications, particularly useful for accessibility testing and assistive technology development. By offering a structured representation of ARIA attributes, aria-query simplifies the process of ensuring proper ARIA implementation for more inclusive user experiences. It is a valuable resource for developers committed to building accessible web content.