# Developer Tools
source: https://developer.mastercard.com/user-account-management-service/documentation/developer-tools/index.md

Use this section to access practical tools for testing and integrating with the User Account Management API. Start with the reference application for implementation examples, or use the Insomnia collection to send requests quickly. For test scenarios and expected results, see [Testing](https://developer.mastercard.com/user-account-management-service/documentation/testing/index.md).

* [Reference Application](https://developer.mastercard.com/user-account-management-service/documentation/developer-tools/reference-app/index.md)
* [Insomnia Collection](https://developer.mastercard.com/user-account-management-service/documentation/developer-tools/insomnia-collection/index.md)

## Next Steps {#next-steps}

* Run the positive and negative scenarios on the [Testing](https://developer.mastercard.com/user-account-management-service/documentation/testing/index.md) page with your chosen tool.
* Review authentication, encryption, and environment details in [API Basics](https://developer.mastercard.com/user-account-management-service/documentation/api-basics/index.md).
* Resolve errors using [Code and Formats](https://developer.mastercard.com/user-account-management-service/documentation/code-and-formats/index.md).