# ThinkingPart

# Interface: ThinkingPart

Defined in: [packages/ai/src/types.ts:408](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L408)

## Properties

### content

```ts
content: string;
```

Defined in: [packages/ai/src/types.ts:410](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L410)

***

### signature?

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

Defined in: [packages/ai/src/types.ts:412](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L412)

***

### stepId?

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

Defined in: [packages/ai/src/types.ts:411](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L411)

***

### type

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

Defined in: [packages/ai/src/types.ts:409](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L409)