World Labs' World API lets other applications request an explorable 3D environment from text, images or video. It makes Marble's world-generation capability programmable: software submits a generation request, waits for the job to finish, and receives a world that can be displayed in a browser or exported into other tools. The API announcement describes this as a way to embed spatial creation into existing workflows. For design applications, the useful output is a space that people can navigate together while discussing a concept.