API Viewer Element

Web component that generates interactive API documentation and live playgrounds for custom elements / web components. It parses custom-elements.json manifest and renders property, attribute, method, event, and slot documentation alongside a live demo editor. Version 1.0.0-pre.10 is the latest pre-release, with patches updating demo copy button styles. Key differentiator: fully custom-element-based, works in any framework or vanilla HTML, built on LitElement. Alternatives like Storybook or Docz typically require framework-specific integrations. Ships TypeScript types (from @open-wc). Part of Open Web Components ecosystem.