# Text Intelligence Callback

`callback` _string_

Text Intelligence

Deepgram’s Callback feature allows you to supply a callback URL to which text can be returned. When passed, Deepgram will immediately respond with a `request_id` before processing your text asynchronously.

## Enable Feature

To enable Callback, when you call Deepgram’s API, add a `callback` parameter in the query string and set it to the URL to which you would like transcriptions sent:

`callback=URL`

```bash
```

## URL Structure

An example URL is `https://example.com/callback`.

Your callback URLs may reference the following protocols:

- `http` or `https`

## Authenticating Callback Requests

Authentication ensures the security and integrity of callback requests. There are two main methods for authenticating callback requests: using Basic Auth and utilizing the dg-token request header.

### Using Basic Auth

You may embed username-password authentication credentials in the callback URL in the format `https://username:[email protected]`. However, it’s important to note that only ports 80, 443, 8080, and 8443 are permitted for callbacks.

:::callout{intent="warning"}
Only ports 80, 443, 8080, and 8443 are permitted for callbacks.
:::

### Using the `dg-token` Request Header

Alternatively, the callback request itself contains a header named dg-token. This header is automatically set to the API Key Identifier associated with the API Key used to submit the original request. This method provides a secure and straightforward means of authentication.

## Results

Depending on the type of submitted text, the response will vary.

### Text

When Deepgram has finished analyzing the text, it will send a `POST` request to the provided callback URL with an appropriate HTTP status code.

If the HTTP status code of the response to the callback `POST` request is unsuccessful (not 200-299), Deepgram will retry the callback up to 10 times with a 30 second delay between attempts.

## Using `CallBack_Method`

To enable the Callback Method, include the `callback_method` parameter in the query string. By default, the method supports `POST`, but you can specify `PUT` instead.

```bash
```

## Related pages

- [Amazon SageMaker](./amazon-sagemaker-index.md)
- [API Reference](./api-reference-index.md)
- [Aura](./aura-index.md)
- [Changelog](../changelog.md)
- [Deepgram's Docs](../index.md)
- [Docker/Podman](./docker-podman-index.md)
- [Flux TTS](./flux-tts-index.md)
- [Guides](./guides-index.md)
- [Home](./home-index.md)
- [Intelligence](./intelligence-index.md)

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