The UniFi API browser is a tool designed for developers to easily browse and understand the data collections exposed through Ubiquiti’s UniFi Controller API. It is built using PHP, JavaScript, and the Bootstrap CSS framework and includes a PHP class for accessing the API.

Since its initial release in November 2015, it has gained popularity with well over 1000 GitHub stars and more than 16,000 downloads. The tool is available under the MIT license and can be found here on GitHub:
https://github.com/Art-of-WiFi/UniFi-API-browser