# ThinkingPart

# Interface: ThinkingPart

Defined in: [packages/ai/src/types.ts:399](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L399)

## Properties

### content

```ts
content: string;
```

Defined in: [packages/ai/src/types.ts:401](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L401)

***

### signature?

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

Defined in: [packages/ai/src/types.ts:403](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L403)

***

### stepId?

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

Defined in: [packages/ai/src/types.ts:402](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L402)

***

### type

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

Defined in: [packages/ai/src/types.ts:400](https://github.com/TanStack/ai/blob/main/packages/ai/src/types.ts#L400)