# Trifold Invite

> Letter-folded card in CSS 3D. Closed, it shows a cover flap with a wax seal; open it and the top flap swings up, then the bottom flap swings down, each panel shading as it turns from the light. Folding closes it in reverse order. Bring your own cover, three inside panels and a back.

- Slug: `trifold-invite`
- Category: [3D](https://www.assembli.design/category/3d.md)
- Type: component
- Tags: 3d, fold, invitation, card, paper, reveal
- npm dependencies: motion
- shadcn/ui dependencies: none
- Added: 2026-10-15
- Live preview: https://www.assembli.design/preview/trifold-invite
- Page: https://www.assembli.design/components/trifold-invite

## 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/trifold-invite/trifold-invite.tsx` and installs dependencies):

```bash
npx shadcn@latest add @assembli/trifold-invite
```

Registry item JSON: https://www.assembli.design/r/trifold-invite.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.