Meshy for Unity This is the official documentation of Meshy-for-Unity, you'll find detailed instructions on how to use Meshy to create your own textures and 3D models in the Unity game engine. Prerequisite To use Meshy-for-Unity, you should follow the following steps: Download and install Meshy-for-Unity. Register a Meshy account. Create and save an API key according to the instructions on the Authentication page.