I tend to call this sort of "I glued a bunch of external services together to make a useful tool" Software Plumbing, not Engineering.

Anyways I think what you've demonstrated that it's actually a really bad time to be a "Duct Tape Engineer" because anyone with a bit of knowhow can coax the AI to build them some pile of loose data pipes and leaky abstractions that appears useful. The market for this sort of software builder is about to get very crowded