If you're a Cadence Allegro or OrCAD user, you can easily export to IPC2581B, which can then be uploaded for a quote on CircuitHub.
Opening up the .brd project for your project, navigate to Export -> IPC 2581
On the pop-up make sure you have IPC-2581B selected under "IPC-2581 Version"
For "Functional Mode" we require either Full mode or Assembly mode 3
Please ensure that all the layers that define your board are included.
Export and you are done!
Review this article on how to upload your IPC-2581 file to CircuitHub.