# Testing the API with Insomnia
source: https://developer.mastercard.com/mastercard-benefits-and-experiences-portal/documentation/tutorials-and-guides/test-api-insomnia/index.md

## Prerequisites {#prerequisites}

### For testing with an API testing tool: {#for-testing-with-an-api-testing-tool}

1. Install [Insomnia](https://developer.mastercard.com/platform/tutorial/use-insomnia-rest-client-for-mastercard-apis?lang=#overview).
2. Configure your ennvironment with predefined Mastercard settings, such as `consumerKey`, `keystorePassword`, etc.
3. Download an API collection file: [benefits-and-experiences-portal-collection.yaml](https://static.developer.mastercard.com/content/mastercard-benefits-and-experiences-portal/uploads/tutorial/benefits-and-experiences-portal-collection.yaml) (9KB).

## Instructions {#instructions}

1. Launch Insomnia and switch to its **Dashboard**.
2. Press **Create** to open a drop-down menu, then choose **File** . ![dashboard](https://static.developer.mastercard.com/content/mastercard-benefits-and-experiences-portal/uploads/tutorial/insomnia1.png)
3. In the Open File dialog window, choose the previously downloaded API collection file (the `*.yaml` file).
4. You should see a message notifying you of the successfully imported workplace: ![dashboard](https://static.developer.mastercard.com/content/mastercard-benefits-and-experiences-portal/uploads/tutorial/insomnia2.png)
5. Acknowledge the message and make sure the collections has loaded correctly. In the panel to the left, you should see the name of the folder **API Testing - Benefits Portal** . Under that folder, there should be three `POST` endpoints:

* `Search Benefits` for searching benefits by credit card number
* `SSO` for generating a single sign-on user token for webviews
* `Select Benefits` for selecting (activating) benefits by credit card number. ![dashboard](https://static.developer.mastercard.com/content/mastercard-benefits-and-experiences-portal/uploads/tutorial/insomnia3.png)

Proceed to [use cases](https://developer.mastercard.com/mastercard-benefits-and-experiences-portal/documentation/use-cases/index.md) and use sample request and response for your reference if needed.