What problem does it solve? When content changes on a page without a reload, developers often don't know whether the change must be announced to screen readers, who should announce it, or at what priority. This Skill provides a clear decision test and house rules so accessibility announcements are correct by construction rather than caught by testing. ## Core Features & Use Cases - Announcement decision test: New content and new interactive elements are announced; purely visual state changes are not; changes the user did not cause are announced. - Responsibility rules: Components announce for themselves, the application covers what falls between components, and a toast always carries its own announcement. - Priority and volume guidance: Assertive is reserved for errors and urgent conditions, everything else is polite, with debouncing and coalescing per established practice. - Use Case: When a filter updates a result count or a region reloads in place, apply the test to decide whether and how the change is announced to assistive technology. ## Quick Start Use the live regions skill to decide whether this dynamic content update needs an aria-live announcement and at what priority.