Here is one: shafts for power transmission equipment, in our case belt conveyors for bulk material handling. Shafts for pulleys come in all shapes and sizes, ideal use case for code generated models and Cadquery.

I'm very excited that such project exists, API is super nice, you can hook it up with a web server and anything else in python ecosystem. Then our sales people who are tech knowledgeable, but are not engineers can do this for customers without going to engineering. This saves time and shortens the sales cycle

How can you size shafts without engineers? Who does the calculation and review? Who is liable if it fails and someone gets hurt?

It comes from the customers. They know what they want.

You guys aren't manufacturing from the cad files, are you? Like convert to gcode and send to a CNC? Or is it just for models only.

I'm not in that industry, but it makes sense you'd have a use for it at least.

The thing is that fusion360/solidworks/etc does parametric modelling so can probably be used just as easily, with the added benefit of being industry standards.

Where I see potential for using tools as cadquery is with product type configurators which are often part of ERP software aka CPQ (Configure-Price-Quote). Cadquery generated model would be part of the Configure. Of course this wouldn't work for complex product, but there are companies out there that may need a configurator for relatively simple product