Create a customized activity to retrieve information form a vault

Hello :slight_smile: ,

I am using Uipath entreprise edition, and i am looking to develop a customized activity that will allow me to access on demand to an exterior vault and retrieve some informations through an API ( USername and Password ), to pass them later after creating a flow and make an Attended Robot. The extracted information should be invisible and hidden for users and developers, i just need to use them in my activities and drop them after using them. Any help please ?