> For the complete documentation index, see [llms.txt](https://docs.ionos.com/cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionos.com/cloud/~/revisions/AMiYziCllTKB2y2lmONY/storage-and-backup/s3-object-storage/s3-tools/postman.md).

# Postman

Postman is a free tool for conveniently working with APIs in a graphical interface. It is available for Windows, macOS, and Linux.

You can follow the installation instructions described on [**Postman**](https://www.postman.com/).

### Steps

1. In the **Authorization** tab for a request, select **AWS Signature** from the **Type** dropdown list. Specify where Postman should append your authorization data using the **Add authorization data** to drop-down menu.

* If you select **Request Headers**, Postman populates the **Headers** tab with Authorization and X-Amz- prefixed fields.
* If you select the **Request URL**, Postman populates the **Params** tab with authentication details prefixed with X-Amz-.

![Postman](https://1737632334-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MifAzdGvKLDTtvJP8sm%2Fuploads%2Fgit-blob-927969420e0e82104bbd63d1a807929a10059b1c%2Fpostman-api.png?alt=media)

{% hint style="info" %}
**Note:** The parameters listed below contain confidential information. We recommend using variables to keep this data secure while working in a collaborative environment.
{% endhint %}

2. To get the Access Key and Secret Key, [log in to the DCD](https://docs.ionos.com/cloud/getting-started/basic-tutorials/log-in-dcd), go to **Menu** > **Storage** > **IONOS S3 Object Storage** > **Key management**.

Advanced fields are optional, but Postman will attempt to generate them automatically if necessary.

3. For **AWS Region**, leave the field blank as the region from the endpoint will be used.
4. For **Service Name**, enter `s3`. The name of the service that receives the requests.
5. For **Session Token**, leave the field blank. This is only required when temporary security credentials are used.
6. Setup completed. Now check the [**S3 API description**](https://api.ionos.com/docs/s3/v2/) to get the right endpoint to call.

{% hint style="info" %}
**Note:** You need to use the correct endpoint URL for each region (see the [**list of available endpoints**](https://docs.ionos.com/cloud/managed-services/s3-object-storage/s3-endpoints)).
{% endhint %}


---

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