"Indexing" is a very general term and I don't think it is barking up the wrong tree.

A library card catalog system is an index. It exists to make it easy to find the right book quickly.

Your grocery store aisles are indexes to make it easier for you to find baking supplies from laundry and cleaning.

Well-organized codebases are already indexes by project, by folder structure, by naming convention, etc.

We use indexes everywhere, big or small.

The problem is really that the harnesses/SDKs/APIs themselves appear as if they weren't designed with indexes in mind from the outset.