# ThinkingPart

# Interface: ThinkingPart

Defined in: [packages/ai/src/types.ts:441](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L441)

## Properties

### content

```ts
content: string;
```

Defined in: [packages/ai/src/types.ts:443](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L443)

***

### signature?

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

Defined in: [packages/ai/src/types.ts:445](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L445)

***

### stepId?

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

Defined in: [packages/ai/src/types.ts:444](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L444)

***

### type

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

Defined in: [packages/ai/src/types.ts:442](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L442)