Compose primitivesComposeTextarea

Compose Textarea

Auto-resizing textarea wired to compose context; Enter sends, Shift+Enter breaks.

ComposeTextarea ships with a full API table, a copyable example, and accessibility notes.

tsx

Installation

Install the package once, then import ComposeTextarea from its direct entry point or from the root.

bash

pnpm add @agent-ui/react

tsx

import { ComposeTextarea } from "@agent-ui/react";

Tailwind CSS v4 users: add @source "../node_modules/@agent-ui/react/src" to the global stylesheet so the library utilities are generated.

Usage

The example below is the same code that renders the preview. Copy it, swap in your own handlers, and ship.

tsx

1import { ComposeTextarea } from "@agent-ui/react";
2 
3<ComposeTextarea aria-label="Message" placeholder="Ask anything" rows={1} />

API reference

Every prop ComposeTextarea accepts, its type, default, and behaviour.

API reference for this component
Name	Type	Default	Description
placeholder	string	—	Prompt placeholder.
aria-label	string	—	Accessible name; always provide one.
className	string	—	Native textarea attributes are forwarded.

Use it with the rest of the library

ComposeTextarea composes with MessageList, ChatShell, useChat, and the provider compose blocks. Browse the full reference or see all components in the gallery.

3 lines · copy-ready