Create a web form (I'll start it and provide most of the UI)
Does not need CSS styling
User selects values from drop down lists
Write button writes to JSON file which is saved locally
Another form allows user to select a tool from a drop down and set parameters
A Run button invokes the tool which consumes the parameters one of which is to read the JSON file previously created.
One of my goals here is learn [login to view URL], so I will be asking questions (possibly via phone).