Harness engineering
Designing the runtime around a model: which tools it can call, what it can read and change, how it checks its work, and when it stops. The harness often matters more than which model sits inside it.
“Same model, different harness, and suddenly it can finish a migration on its own.”
See also
Part of the Extended list
Harness engineering is on the Extended list: builder jargon, industry terms, and newer slang for when you want to go further. It entered common use around 2026.