Clay rendering is simple on keyshot. In Library, materials, you must have to apply a with material, for example white soft touch, or if you want some reflections on the rendering surface you must apply with plastic. Then select in environment, an environment with gray or dark gradation. With the mouse (right click) turn the point of view until you get the perfect angle. Then select the "render" option and voila!
Yes you can do wire frame rendering in keyshot..check the attached image