1. Add your API key. Get one at console.anthropic.com under API Keys. A page costs a few cents to generate. Your key is stored only in this browser and is sent only to Anthropic. Nobody else ever sees it.
2. Fill in the brief. The more specific your answers, the better the copy. Short phrases are fine; full sentences are better.
3. Pick your sections. Hero, final call to action, and footer are always included. Everything else is up to you.
4. Optional design file. If you have a design.md from the companion design tool, load it and your page takes on that look. Without one, you get a clean editorial default.
5. Download and add images. Save the finished index.html, create a folder named images next to it, and drop in photos using the exact filenames the tool lists. Until you do, the page shows labeled placeholders so nothing looks broken.
Create a folder named images in the same location as your downloaded index.html, then add these files. The page works before the images arrive; each empty slot shows its own filename.