Drafting Program for Construction CAD Software

We need a drafting program to accelerate some of the works we do. The program will be for rebar detailing works. If you are a programmer, you can google it to understand the concept of rebar detailing. It will take input data from construction sector CAD software like revit, allplan or archicad. Then, it will create new drawings based on this input data and some predefined requirements. This project will be for single footings only and will work with revit only, in order to keep it simple. However, we want to continue to develop the program. In the long run, we want the program to give the output in FreeCAD and of course we want it to work for walls, columns, beams and everything. So, we will do multiple projects or this project may turn into a long term project. We will provide all information about the requirements and the user interface we want. Thank you