# TextPart

# Interface: TextPart\<TMetadata\>

Defined in: [types.ts:278](https://github.com/TanStack/ai/blob/main/packages/typescript/ai/src/types.ts#L278)

Message parts - building blocks of UIMessage

## Type Parameters

### TMetadata

`TMetadata` = `unknown`

## Properties

### content

```ts
content: string;
```

Defined in: [types.ts:280](https://github.com/TanStack/ai/blob/main/packages/typescript/ai/src/types.ts#L280)

***

### metadata?

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

Defined in: [types.ts:281](https://github.com/TanStack/ai/blob/main/packages/typescript/ai/src/types.ts#L281)

***

### type

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

Defined in: [types.ts:279](https://github.com/TanStack/ai/blob/main/packages/typescript/ai/src/types.ts#L279)