# Depth Tunnel

> Scroll-driven 3D gallery: frames hang on alternating walls of a CSS perspective corridor and the camera flies down it as you scroll, easing between wheel steps. Frames emerge from fog, sharpen as they pass, floor and ceiling grids stream by, and a headline waits at the vanishing point.

- Slug: `depth-tunnel`
- Category: [3D](https://www.assembli.design/category/3d.md)
- Type: block
- Tags: 3d, scroll, gallery, perspective, parallax, sticky
- npm dependencies: motion
- shadcn/ui dependencies: none
- Added: 2026-10-15
- Live preview: https://www.assembli.design/preview/depth-tunnel
- Page: https://www.assembli.design/components/depth-tunnel

## 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/depth-tunnel/depth-tunnel.tsx` and installs dependencies):

```bash
npx shadcn@latest add @assembli/depth-tunnel
```

Registry item JSON: https://www.assembli.design/r/depth-tunnel.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.