AtriumKit is a Chrome-based tool that captures your clicks through a web app and turns them into interactive product demos. It produces two demo formats: guided walkthroughs with tooltip steps and branching paths, and clickable sandboxes viewers can freely explore. Demos include AI-generated voiceovers with captions in multiple languages and can be shared as a link or embedded in help centers, onboarding pages, or emails. AtriumKit also exposes an MCP server, allowing users to edit, translate, publish, and analyze demos from AI clients such as Claude and Cursor.