# Dune Flow

> Smooth B-spline stacked area flow — dunes instead of spikes, raw values in the tooltip. Two registers: a full chart with axes and legend, and a bare hero landscape where a pen draws the crest, a live dot pulses at today and a grey ghost echoes the future. Answers: "What made up the flow over time, and when were the waves?" Part of vizcn by vibecoding.tech — agent-first SVG viz forms, no chart libraries. Demo: real commits per day of a site built by coding agents (vibecoding.ru/open).

- Author: [Evgeny Shilov](https://21st.dev/@eugeneshilow)
- Library: [vizcn · by vibecoding.tech](https://21st.dev/@eugeneshilow/library/vizcn)
- License: mit
- Tags: Chart, Data Viz, SVG, Hero
- Live preview: https://21st.dev/@eugeneshilow/components/dune-flow

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/eugeneshilow/dune-flow?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/chart.md