> For the complete documentation index, see [llms.txt](https://docs.adobesandbox.com/comprehensive-technical-tutorial-archive/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.adobesandbox.com/comprehensive-technical-tutorial-archive/module9/ex6.md).

# 9.6 Test your decision using the API

## 9.6.1 Work with the Offer Decisioning API using Postman

Download [this Postman Collection for Offer Decisioning](https://github.com/AdobePartnerTechnicalServices/aep-quickstart-guide/blob/main/assets/postman/postman_offer-decisioning.zip) to your desktop and unzip it. You'll then have this:

![OD API](/files/L6TfRpuz9GGGkeQX50Oo)

You now have this file on your desktop:

* \[\_Module 14- Decisioning Service.postman\_collection.json]

In [Exercise 3.3.3 - Postman authentication to Adobe I/O](/comprehensive-technical-tutorial-archive/module3/ex3.md) you installed Postman. You'll need to use Postman again for this exercise.

Open Postman. Click **\[Import]**.

![Adobe I/O New Integration](/files/DPYrL0jTnQosApu0sABj)

Click on **\[Upload files]**.

![Adobe I/O New Integration](/files/6dbjjDBiXDg0GM2ZtLrX)

Select the file **\[\_Module 14- Decisioning Service.postman\_collection.json]** and click **\[Open]**.

![Adobe I/O New Integration](/files/e03CaK3OzqDZpNmwX3v6)

You'll then have this collection available in Postman.

![Adobe I/O New Integration](/files/xJTYOYb1ee9EUejeJuKC)

You now have everything you need in Postman to start interacting with Adobe Experience Platform through the APIs.

### 9.6.1.1 List Containers

Click to open the request **\[GET - List Containers]**.

Under **\[Params]**, you'll see this:

* property: `_instance.parentName==aepenablementfy22`

In that parameter, **\[aepenablementfy22]** is the name of the sandbox that is used in Adobe Experience Platform. The sandbox you should use is `--aepSandboxId--`. Replace the text **\[aepenablementfy22]** by `--aepSandboxId--`.

After replacing the sandbox name, click **\[Send]**.

![OD API](/files/lwS70HnoNP8VOsMI2xB4)

This is the response, which shows the offer container for the sandbox that you specified. Please copy the **\[container instanceId]** as indicated below and write it down in a text file on your computer. You'll need to use this **\[container instanceId]** for the next exercise!

![OD API](/files/lN3R50opB5xcXzjJu7SX)

### 9.6.1.2 List Placements

Click to open the request **\[GET - List Placements]**. Click **\[Send]**.

![OD API](/files/h8Oup9z2JiGVuuxc9xEz)

You're now seeing all available placements in your offer container. The placements you're seeing were defined in the Adobe Experience Platform UI, as you could see in [Exercise 9.1.3](/comprehensive-technical-tutorial-archive/module9/ex1.md).

![OD API](/files/b90GLycqo4U15l43voJw)

### 9.6.1.3 List Decision Rules

Click to open the request **\[GET - List Decision Rules]**. Click **\[Send]**.

![OD API](/files/kbv2BswZAc68Bpd2y9ZA)

In the response, you'll see the Decision Rules that you defined in the Adobe Experience Platform UI, as you could see in [Exercise 9.1.4](/comprehensive-technical-tutorial-archive/module9/ex1.md).

![OD API](/files/zNFi1D6iIGyPxt5JguHq)

### 9.6.1.4 List Personalized Offers

Click to open the request **\[GET - List Personalized Offers]**. Click **\[Send]**.

![OD API](/files/G7SX6m62TBldh638bBct)

In the response, you'll see the Personalized Offers that you defined in the Adobe Experience Platform UI in [Exercise 9.2.1](/comprehensive-technical-tutorial-archive/module9/ex2.md).

![OD API](/files/4ykI4mGxuyuPalH5xMwh)

### 9.6.1.5 List Fallback Offers

Click to open the request **\[GET - List Fallback Offers]**. Click **\[Send]**.

![OD API](/files/VpJsRO6jpwaAd8zFbCqZ)

In the response, you'll see the Fallback Offer that you defined in the Adobe Experience Platform UI in [Exercise 9.2.2](/comprehensive-technical-tutorial-archive/module9/ex2.md).

![OD API](/files/NkLvL2S2ZGMmaEnfjgLE)

### 9.6.1.6 List Collections

Click to open the request **\[GET - List Collections]**.

![OD API](/files/2OUxQR77qN9iDwA9A8Vo)

In the response, you'll see the Collection that you defined in the Adobe Experience Platform UI in [Exercise 9.2.3](/comprehensive-technical-tutorial-archive/module9/ex2.md).

![OD API](/files/ynsCoZ3cDnbTiosXv8gm)

### 9.6.1.7 Get Detailed Offers for Customer Profile

Click to open the request **\[POST - Get Detailed Offers for Customer Profile]**. This request is similar to the previous one, but will actually return details like image URLs, text etc.

![OD API](/files/BdGfRvKDrd5DLVeYVpff)

For this request, similar to the previous exercise which has similar requirements, you need to provide the values for **\[xdm:placementId]** and **\[xdm:activityId]** to retrieve the specific offer details for a customer.

The field **\[xdm:activityId]** needs to be filled out. You can retrieve that in the Adobe Experience Platform UI, as indicated below.

![OD API](/files/WV4X6DllPI29YkYhimPk)

The field **\[xdm:placementId]** needs to be filled out. You can retrieve that in the Adobe Experience Platform UI, as indicated below. In the below example, you can see the placementId for the placement **\[Web - Image]**.

![OD API](/files/aKpjCLFWvPjhlEnCvkj9)

Go to **\[Body]** and enter the email address of the customer for whom you'd like to request an offer. Click **\[Send]**.

![OD API](/files/iP4Jbm7Johp2PNxokfg4)

Finally, you'll then see the result of what kind of personalized offer and what assets need to be displayed to this customer.

![OD API](/files/ZLyHfjLd83In2zk9KByz)

You've now completed this exercise.