# Tree Table

> Hierarchical project table with expandable rows: children unfold with a height-and-fade spring, indent guides trace the structure, and parent progress rolls up. A real treegrid with arrow-key navigation, expand/collapse all and roving focus.

- Slug: `tree-table`
- Category: [Tables](https://www.assembli.design/category/tables.md)
- Type: component
- Tags: table, tree, hierarchy, expand, treegrid, projects
- npm dependencies: motion, lucide-react
- shadcn/ui dependencies: none
- Added: 2026-10-15
- Live preview: https://www.assembli.design/preview/tree-table
- Page: https://www.assembli.design/components/tree-table

## 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/tree-table/tree-table.tsx` and installs dependencies):

```bash
npx shadcn@latest add @assembli/tree-table
```

Registry item JSON: https://www.assembli.design/r/tree-table.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.