# Concertina — Folding Book Portfolio

> A sound designer's portfolio printed as a concertina book: scrolling unfolds the panels in 3D one spread at a time, a top-down fold diagram tracks your place, and at the end the book closes onto a contact back cover.

- Slug: `concertina-folio`
- Category: [Landing pages](https://www.assembli.design/category/landing-pages.md)
- Subcategory: [Portfolios](https://www.assembli.design/category/landing-pages/portfolio.md) (`portfolio`)
- Type: block
- Tags: landing-page, portfolio, template, designer, 3d, scroll, leporello, full-page
- npm dependencies: lucide-react
- shadcn/ui dependencies: none
- Added: 2026-10-16
- Live preview: https://www.assembli.design/preview/concertina-folio
- Page: https://www.assembli.design/components/concertina-folio

## 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/concertina-folio/concertina-folio.tsx` and installs dependencies):

```bash
npx shadcn@latest add @assembli/concertina-folio
```

Registry item JSON: https://www.assembli.design/r/concertina-folio.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.