My old gas range had a duplex outlet mounted in the upper frame. There
is no accessible outlet near the range and I used the range outlet for
my slow cooker, bread machine etc. It kept the machines off the main
counter as they spent the long hours needed to do their jobs.

My current range does not have this feature.

I'm pretty sure that I can find room in the upper panel of my range to
mount an outlet, but I'm wondering about the "compliancy" of doing
this. I would tap into the AC wiring where it enters the range and run
the wires up to the panel along side the existing wiring harness.

Before you ask: The wall behind the range contains the ductwork for
the second floor. There is no convenient place to put an outlet. The
only open stud-space is either behind the range or behind the fridge.
The area behind the small counter next the range is full.

What are your thoughts on adding an outlet to the range?