> For the complete documentation index, see [llms.txt](https://docs.developer.disruptive-technologies.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.developer.disruptive-technologies.com/explore-our-rest-api/with-postman.md).

# with Postman

## Overview

We will here show how Postman can be used to interact with our REST API. As an example, Basic Auth will be used to authenticate a GET request that fetches a list of available projects and a POST request that creates a new label for a device. All available endpoints are listed in our [REST API Reference](https://developer.disruptive-technologies.com/api).

## Prerequisites

* **Enable Basic Auth**\
  You need to have [created a Service Account](/service-accounts/creating-a-service-account.md) with Basic Auth and a role of Project Developer or higher.

## Postman

Postman is a collaboration platform for API development. It is a powerful tool with many useful features, but we will here use it to make simple arbitrary HTTP requests.

### Installation

Postman can be acquired from the official [downloads page](https://www.postman.com/downloads/).

### Authorization

When creating a new request, under the **Authorization** tab, specify the method of Basic Auth.

* **Username:** Your Service Account Key ID.
* **Password:** Your Service Account Secret.

![](/files/-MTaLVnvrtZqiJe0rC7s)

## GET Request

To fetch a list of all projects available to a Service Account, create a new GET request with the following endpoint URL. No request body is required for this call.

`https://api.d21s.com/v2/projects`

![](/files/-MTaSkp7jNUND1UcApb7)

If the valid key-id and secret of a Service Account with sufficient privileges were used, Postman should return a list of the available project for that account.

```javascript
{
    "projects": [
        {
            "name": "projects/<PROJECT_ID>",
            "displayName": "wCaV7Y",
            "organization": "organizations/<ORGANIZATION_ID>",
            "organizationDisplayName": "Disruptive Technologies Research",
            "sensorCount": 10,
            "cloudConnectorCount": 1,
            "inventory": false
        }
    ],
    "nextPageToken": ""
}
```

## POST Request

To add a new label to a device, create a new POST request with the following endpoint URL.

`https://api.d21s.com/v2/projects/<PROJECT_ID>/devices/<DEVICE_ID>/labels`

For the body, choose Raw and then JSON. Within, the label name and value should be provided.

![](/files/-MTaSKgKTAU2y2UmADNs)

If the valid key-id and secret of a Service Account with sufficient privileges were used, Postman should return the name, key, and value.

```javascript
{
    "name": "projects/<PROJECT_ID>/devices/<DEVICE_ID>/labels/my-new-label",
    "key": "my-new-label",
    "value": "some-value"
}
```


---

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