Building a reusable library, that has no graphical interface, in QML, that has to make HTTP requests

I’m attempting to build a Qt Quick project that is not an application, but a library (in C++, I would be building a statically-linked library), and I would like this library to be able to make HTTP requests, but I’m not sure how to go about doing this. My concerns are: I’m not sure how to build/run a QML app without an interface. All the examples I’ve looked at seem to require me to have a graphical interface of some description (a Rectangle for instance), and hiding the interface still cases it to show up in the task bar. If I can’t have a Qt Quick app without an interface, then I’ll need to make it a pure JavaScript library, but the loss of the XMLHttpRequest make life more difficult. I’m new to QML development, but not to Qt’s C++ modules, and I’m not finding a lot of helpful information. Can anyone help me with this issue, and point me to some documentation that would help?