# TextPart

# Interface: TextPart\<TMetadata\>

Defined in: [packages/ai/src/types.ts:389](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L389)

Message parts - building blocks of UIMessage

## Type Parameters

### TMetadata

`TMetadata` = `unknown`

## Properties

### content

```ts
content: string;
```

Defined in: [packages/ai/src/types.ts:391](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L391)

***

### metadata?

```ts
optional metadata?: TMetadata;
```

Defined in: [packages/ai/src/types.ts:392](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L392)

***

### type

```ts
type: "text";
```

Defined in: [packages/ai/src/types.ts:390](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L390)