# Heart

> Sheen pack: a puffed-up heart of clear glass that beats, lub-dub, then rests. A soap-thin iridescent film turns its lobes gold and magenta, and the colored light behind it pools in the dip and down to the point. A tap gives it a big double beat. Raymarched in WebGL.

- Slug: `sheen-heart`
- Category: [Asset packs](https://www.assembli.design/category/asset-packs.md)
- Subcategory: [Sheen](https://www.assembli.design/category/asset-packs/sheen.md) (`sheen`)
- Type: component
- Tags: 3d, webgl, raymarching, asset, glass, iridescent, heart, love, like, beat, valentine
- npm dependencies: none
- shadcn/ui dependencies: none
- Added: 2026-10-25
- Live preview: https://www.assembli.design/preview/sheen-heart
- Page: https://www.assembli.design/components/sheen-heart

## 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/sheen-heart/sheen-heart.tsx` and installs dependencies):

```bash
npx shadcn@latest add @assembli/sheen-heart
```

Registry item JSON: https://www.assembli.design/r/sheen-heart.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.