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# HttpsCallable interface
A reference to a "callable" HTTP trigger in Cloud Functions.

<b>Signature:</b>

```typescript
export interface HttpsCallable<RequestData = unknown, ResponseData = unknown, StreamData = unknown> 
```

## Properties

|  Property | Type | Description |
|  --- | --- | --- |
|  [stream](./functions.httpscallable.md#httpscallablestream) | (data?: RequestData \| null, options?: [HttpsCallableStreamOptions](./functions.httpscallablestreamoptions.md#httpscallablestreamoptions_interface)<!-- -->) =&gt; Promise&lt;[HttpsCallableStreamResult](./functions.httpscallablestreamresult.md#httpscallablestreamresult_interface)<!-- -->&lt;ResponseData, StreamData&gt;&gt; |  |

## HttpsCallable.stream

<b>Signature:</b>

```typescript
stream: (data?: RequestData | null, options?: HttpsCallableStreamOptions) => Promise<HttpsCallableStreamResult<ResponseData, StreamData>>;
```