# Postman Collection
source: https://developer.mastercard.com/mastercom-extended/documentation/developer-tools/postman-collection/index.md

## 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.

Estimated completion time: 5 minutes

#### Dispute Processing

Endpoints used to manage Single Message System disputes. This includes creating, updating, and retrieving disputes.
Click: [![](https://static.developer.mastercard.com/content/mastercom-extended/uploads/postman-button.svg)](https://www.postman.com/mastercard/workspace/mastercard-developers/collection/26779181-a0442af5-2576-4d04-9c64-b8731f803cdd?action=share&creator=26779181&active-environment=26843617-b1a6e3b1-299b-42d5-a7da-b13fa2f058dd)

#### Transactions, Claims, and Documents

Endpoints used to search for a transaction, manage claims, and manage documents. This includes uploading, downloading, and retrieving document details.
Click: [![](https://static.developer.mastercard.com/content/mastercom-extended/uploads/postman-button.svg)](https://www.postman.com/mastercard/workspace/mastercard-developers/collection/26779181-0f870867-81b8-4d68-9ef6-85a28aa6ae6b?action=share&creator=26779181&active-environment=26843617-b1a6e3b1-299b-42d5-a7da-b13fa2f058dd)

#### Queues and Reports

Endpoints used to manage queues and reports. This includes creating, updating, and retrieving queue and report details.
Click: [![](https://static.developer.mastercard.com/content/mastercom-extended/uploads/postman-button.svg)](https://www.postman.com/mastercard/workspace/mastercard-developers/collection/26779181-b66b0bda-e145-4052-88e2-461cec752d0c?action=share&creator=26779181&active-environment=26843617-b1a6e3b1-299b-42d5-a7da-b13fa2f058dd)

#### Send Payment Dispute Processing

Endpoints used to manage Send Payment disputes. This includes creating, updating, and retrieving send payment disputes.
Click: [![](https://static.developer.mastercard.com/content/mastercom-extended/uploads/postman-button.svg)](https://www.postman.com/mastercard/workspace/mastercard-developers/collection/26779181-66019133-8a69-4755-b581-554ab0761f77?action=share&creator=26779181&active-environment=26843617-b1a6e3b1-299b-42d5-a7da-b13fa2f058dd)