The project Fill 3D is a simplified version of fill3d.ai that uses Function to generate fills in 3D. To set it up, follow these steps: clone the repository, rename .env.example to .env.local, and go to fill3d.ai/pricing to get your API key (ensure you’re logged in). Paste the API key in .env.local. To start the development server, run npm run dev in the terminal. Then, open the webpage in your browser and start filling! The author also mentions that they welcome pull requests.
https://github.com/fill3d/fill