# Gantt Chart

> An interactive project timeline: drag bars to reschedule, pull their edges to resize, everything snaps to days. Finish-to-start dependency arrows reroute live and flag conflicts with a dashed line and a warning icon. Today marker, weekend shading, keyboard control and a live summary.

- Slug: `gantt-chart`
- Category: [Timelines](https://www.assembli.design/category/timelines.md)
- Type: component
- Tags: gantt, project, schedule, drag, dependencies, planning
- npm dependencies: lucide-react
- shadcn/ui dependencies: none
- Added: 2026-10-15
- Live preview: https://www.assembli.design/preview/gantt-chart
- Page: https://www.assembli.design/components/gantt-chart

## 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/gantt-chart/gantt-chart.tsx` and installs dependencies):

```bash
npx shadcn@latest add @assembli/gantt-chart
```

Registry item JSON: https://www.assembli.design/r/gantt-chart.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.