# Tutorials and Guides
source: https://developer.mastercard.com/mastercard-benefits-and-experiences-portal/documentation/tutorials-and-guides/index.md

## Introduction {#introduction}

This tutorial explaines how to use the API in two modes:

* **Testing with Insomnia**
  Test the API by directly posting data to the endpoints using *Insomnia* - an API testing tool.

* **Testing with a Reference Java App**
  Test the API by running a simple Java reference app with minimal dependencies that generates mock responses.

Explore each section separately.