# Upgrade to Pro (Liquid Metal)

> An "Upgrade to Pro" CTA with an animated liquid-metal ring (metal-fx). The pill button variant sits in a toolbar next to a search field and a menu button, which pick up a soft metal reflection via reflectionTargets (dark mode). Three presets — chromatic, silver, gold — theme-aware, WebGL-driven.

- Author: [Jakub Antalik](https://21st.dev/@Jakubantalik)
- License: mit
- Tags: Button, Upgrade, Toolbar, CTA, Metal
- npm dependencies: metal-fx
- Live preview: https://21st.dev/@Jakubantalik/components/metal-upgrade-button

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/Jakubantalik/metal-upgrade-button?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/button.md