# Form Error

> A small validation message shown under a form field, that renders nothing when there is no error so it can be used unconditionally.

- Author: [robertlib](https://21st.dev/@robertlib)
- Library: RobertLib
- License: MIT
- Tags: Form, Validation, Error, Field, Input
- Live preview: https://21st.dev/@robertlib/components/form-error

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/robertlib/form-error?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/form.md