# Developer Tools
source: https://developer.mastercard.com/agent-suite-for-merchants/documentation/developer-tools/index.md

👉 Add a Developer Tools folder to hold your possible client testing tools: Postman Collection (if applicable), Insomnia Collection (if applicable), or Reference Application.

Use this section to access practical tools for testing and integrating with the Pet Store API. Start with the reference application for implementation examples, or use the Postman and Insomnia collections to send requests quickly.

* [Reference Application](https://developer.mastercard.com/agent-suite-for-merchants/documentation/developer-tools/reference-app/index.md)
* [Postman Collection](https://developer.mastercard.com/agent-suite-for-merchants/documentation/developer-tools/postman-collection/index.md)
* [Insomnia Collection](https://developer.mastercard.com/agent-suite-for-merchants/documentation/developer-tools/insomnia-collection/index.md)