# Input OTP

> A row of auto-advancing digit boxes for entering a one-time verification code sent by SMS, email, or an authenticator app.

- Author: [halaska-studio](https://21st.dev/@halaska-studio)
- Library: @delego
- License: MIT
- Tags: Input OTP, OTP, Pin Input, Form
- Live preview: https://21st.dev/@halaska-studio/components/input-otp

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/halaska-studio/input-otp?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/input-otp.md