# Assistant Composer

> Chat composer for AI assistants: auto-growing field, mode pills, attach button, character counter and one send/stop button that follows the AI SDK status. Enter sends, Shift+Enter adds a line.

- Author: [Dudelnik](https://21st.dev/@konsstepnov)
- License: mit
- Tags: AI Chat, Composer, Prompt Input, Chat, Input
- npm dependencies: clsx, motion, lucide-react, tailwind-merge
- Live preview: https://21st.dev/@konsstepnov/components/assistant-composer

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/konsstepnov/assistant-composer?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/ai-chat.md