Splunkbase Modular Embedded Interfaces

I have seen a number of resources that described how to create a UI for modular inputs, but this setting is limited to the manager XML file configuration ( http://docs.splunk.com/Documentation/Splunk/6.6.1/AdvancedDev/ModInputsCustomizeUI ). In this configuration, the client will be able to specify only some static configs.

We would like to create a highly customizable user interface for "modular inputs", so we must call external REST services to help clients specify the correct values ​​for "modular inputs". Like the current fall with parameters and other things.

Is there a way to create such a custom UI for modular inputs? Any good links to follow?