# Postman Collections
source: https://developer.mastercard.com/mastercard-agent-pay/documentation/postman-collections/index.md

👉 If you have a Postman Collection set up, include instructions about using the Postman Collections Workspace here.

## Overview {#overview}

Postman is an application for easy RESTful API exploration. You can use Postman to test API calls multiple times without having to write code. You can save multiple sets of credentials to quickly test an API's calls in the sandbox and production environments.

### 👉Prerequisites {#prerequisites}

1. [Postman account](https://www.postman.com/) (Sign up or Log in),
2. Mastercard Developer project with sandbox and production credentials.

### 👉Tutorial {#tutorial}

See the following [Postman tutorial](https://developer.mastercard.com/platform/tutorial/use-postman-for-mastercard-apis/) for the generic steps needed to get Mastercard authentication working with the Postman collection.

### Use the button bellow to fork our Postman collection and explore the API: {#use-the-button-bellow-to-fork-our-postman-collection-and-explore-the-api}

👉 Apply the [button shortcode](https://stage.developer.mastercard.com/jamstack/documentation/theme/shortcodes/button/) here to link to your Postman Workspace. If your API has not been set up in our Postman Workspace contact the API C\&S Team.
Open in Workspace

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