> To work with Postman, we provide 3 methods you can use with our Developer API


# Open with Postman

You can use Postman to try our API. We also provide Public Postman Collection Documentation that you can access: [HERE](https://www.postman.com/dealpos/workspace/developer-api/)

You can try it with 2 methods:

1. Postman for Web
2. Postman for Windows


## 1. Postman for Web:

1. Visit our [Public Postman Collection Documentation](https://documenter.getpostman.com/view/4122086/UVXqEsbt)
2. Click **➤ Run in Postman**


![image.png](https://stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/9TtfKxV5l6c)

1. Select Postman for Web


![image.png](https://stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/ki3e9XaTLMM)

> In this step, you will need to login into your [Postman Account](https://www.postman.com/postman-account/)


1. Import the collection into your existing **Workspace**


![image.png](https://stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/laVAqlheDqY)

1. You can now run our [Public Postman Collection Documentation](https://documenter.getpostman.com/view/4122086/UVXqEsbt) in the Web!


![image.png](https://stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/btyFh8spRp4)

## 2. Postman for Windows:

1. Visit our [Public Postman Collection Documentation](https://documenter.getpostman.com/view/4122086/UVXqEsbt)
2. Click **➤ Run in Postman**


![image.png](https://stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/9TtfKxV5l6c)

1. Select Postman for Windows


![image.png](https://stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/ki3e9XaTLMM)

1. Click Open Postman


![image.png](https://stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/YTtdfm2OK8w)

1. Import the collection into your existing **Workspace**


![image.png](https://stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/dFAtFKV7dmQ)

1. You can now run our [Public Postman Collection Documentation](https://documenter.getpostman.com/view/4122086/UVXqEsbt) on your Postman!


![image.png](https://stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/NN66vb407a4)

## 3. Download Postman Collection

You can also download the Postman Collection - Json File. Here is the steps for using the collection in Postman:

1. Open Postman
2. Click Import
3. Select Tab “Link”
4. Paste this  https://www.getpostman.com/collections/b38f9aa5cfbcb9412999 and click "Continue


![1591592455697.png](https://dealpos.stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/b7uLzRlhntI)

1. Confirm your import, then click “Import”


![1591508146097.png](https://dealpos.stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/YAWx7bvV5po)

1. You will see the collection successfully imported


![1591508438693.png](https://dealpos.stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/ZRwLfnz6i68)

1. Now, we need to setting up the environment. Click on the “eye” icon, then click “Add”.


![1591579193194.png](https://dealpos.stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/DwoOvdh1Tto)

1. Add new environment
2. Select the environment and you can start making request
3. Do not forget to authenticate every request with OAuth 2.0. The tutorial can be seen in this [link](https://pos2.docs.stoplight.io/postman)


# Send Request From Postman

1. Choose Method (POST / PUT / GET / DELETE) depend on the API End POINT that you use
2. Go to Tab **Authorization** and choose type **"OAuth2.0"** Click button **"Get New Access Token"**


![1591506316463.png](https://dealpos.stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/LVKxqr91FvM)

![1591506397925.png](https://dealpos.stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/FOIBWJLl230)

![1591506466414.png](https://dealpos.stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/UTdpsv7w8WI)

1. Go to Tab **Body**
Adjust the value of property given and click button Send to see the Response


![1591506544750.png](https://dealpos.stoplight.io/api/v1/projects/cHJqOjUzOTI3/images/3UXiYDHMDjY)