An API for every city in the world

Because the world is moving into cities, and cities are built by people, we want to make the data that every city creates easily accessible to everyone. So we're building a real-time API for every city in the world. https://www.geturbanlink.com/ https://www.geturbanlink.com/ is mostly a landing page right now, we're just getting started. Would love everyone's thoughts on this. Terrible idea? Have been waiting for something just like this?