# TextPart

# Interface: TextPart\<TMetadata\>

Defined in: [packages/typescript/ai/src/types.ts:329](https://github.com/TanStack/ai/blob/main/packages/typescript/ai/src/types.ts#L329)

Message parts - building blocks of UIMessage

## Type Parameters

### TMetadata

`TMetadata` = `unknown`

## Properties

### content

```ts
content: string;
```

Defined in: [packages/typescript/ai/src/types.ts:331](https://github.com/TanStack/ai/blob/main/packages/typescript/ai/src/types.ts#L331)

***

### metadata?

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

Defined in: [packages/typescript/ai/src/types.ts:332](https://github.com/TanStack/ai/blob/main/packages/typescript/ai/src/types.ts#L332)

***

### type

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

Defined in: [packages/typescript/ai/src/types.ts:330](https://github.com/TanStack/ai/blob/main/packages/typescript/ai/src/types.ts#L330)