# Book CTA

> Lead-magnet call to action built around a real CSS 3D hardcover with spine, page block and back cover. It floats, turns toward the cursor, and on hover the front cover swings open on its hinge to show the title page. The linen cover has a foil band and moving glare. An email form with pending and success states sits beside it.

- Slug: `book-cta`
- Category: [3D](https://www.assembli.design/category/3d.md)
- Type: block
- Tags: 3d, book, cta, lead-magnet, newsletter, perspective
- npm dependencies: motion, lucide-react
- shadcn/ui dependencies: button, input
- Added: 2026-10-15
- Live preview: https://www.assembli.design/preview/book-cta
- Page: https://www.assembli.design/components/book-cta

## Install

One-time setup (needs a subscription):

1. Add the registry to the project's `components.json`: `{"@assembli":{"url":"https://www.assembli.design/r/{name}.json","headers":{"Authorization":"Bearer ${ASSEMBLI_API_KEY}"}}}` (merge into `"registries"`).
2. Put an API key from https://www.assembli.design/account in `.env.local` as `ASSEMBLI_API_KEY=asm_…`.

Then install with the shadcn CLI (writes `components/book-cta/book-cta.tsx` and installs dependencies):

```bash
npx shadcn@latest add @assembli/book-cta
```

Registry item JSON: https://www.assembli.design/r/book-cta.json (send `Authorization: Bearer <api key>`)

## Code

> Component source needs an Assembli subscription ($12/month) and an API key sent as `Authorization: Bearer <key>`. To get one without copying anything, POST https://www.assembli.design/api/agent/login (or call the MCP tool connect_account), show the user the link it returns, and poll https://www.assembli.design/api/agent/token for the key. Or subscribe at https://www.assembli.design/pricing and create a key at https://www.assembli.design/account.