# ThinkingPart

Defined in: [packages/ai/src/types.ts:450](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L450)

## Properties

### content

```ts
content: string;
```

Defined in: [packages/ai/src/types.ts:452](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L452)

***

### signature?

```ts
optional signature?: string;
```

Defined in: [packages/ai/src/types.ts:454](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L454)

***

### stepId?

```ts
optional stepId?: string;
```

Defined in: [packages/ai/src/types.ts:453](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L453)

***

### type

```ts
type: "thinking";
```

Defined in: [packages/ai/src/types.ts:451](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L451)