
theprototype.app is a free, collaborative 3D prototyping app that runs in the browser (desktop, phone or VR).
With this connector, your AI builds in the scene: add and arrange shapes and lights, make things move and react (spin, bounce, follow a path, open on a click), add physics, write small game rules, and look at the result through a picture of the scene. Everyone in your session sees each change live, and every step your AI takes appears in Agent activity with its own Undo.
https://theprototype.app/mcpNone in the store listings. The server needs sign-in, so we could not check it