# Stacked Activity Bars

> Interactive stacked daily columns with a live legend that doubles as the tooltip; the last, incomplete day is hatched. Answers: "What makes up each day's volume, and how does it breathe day to day?" Part of vizcn by vibecoding.tech — agent-first SVG viz forms, no chart libraries.

- 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
- Live preview: https://21st.dev/@eugeneshilow/components/stacked-activity

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/eugeneshilow/stacked-activity?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