You do not need an existing repository to begin. Ask for a new one and it is created and scaffolded in a single commit, ready for its GitHub Action to deploy.
What can be scaffolded
- Next.js — a static export, suited to GitHub Pages or Azure Static Web Apps
- React + Vite — a single-page app
- WordPress plugin — a plugin starter with the usual structure in place
- Kadence child theme — a WordPress child theme ready to edit
Then describe what you want
Once the repository exists, work on it the way you would with any coding assistant: say what the site should say and do, and let it make the changes. Each one arrives as a commit.
Keep it to static output. These scaffolds have no database and are not meant to grow one.