The phrase "at its very basic" is correct and usable in written English.
It can be used to describe something in its simplest or most fundamental form.
Example: "At its very basic, the concept of democracy is about the participation of citizens in decision-making."
Alternatives: "at its most fundamental" or "in its simplest form".
At its very basic, the fiscal cliff debate was about tax rates and deficit reduction measures (revenue and spending).
At its very basic level, IoT refers to connecting everyday objects to the Internet with built-in wireless technology so they can be controlled and monitored via an app on your smartphone.
At its very basic level, the endosymbiotic theory hypothesises that mitochondria, chloroplasts and perhaps other organelles of eukaryotic cells, originated as independent organisms which were taken inside what became eukaryotic cells as endosymbionts.
Minecraft is a game about learning how to build, craft and build anything your imagination desires, but at its heart it's very basic.
At a very basic level, it is the fault of the software engineers who are writing the programs, and of their bosses.
At a very basic level, it shifts data ownership from a centralized location and breaks everything down to "blocks" in order to distribute them over a greater network.
If wet rice production was involved in farming expansions out of central China, it was surely at a very basic level without major investment in wet field infrastructure.
"At a very basic level," Wedeman found, "it appears to have prevented corruption from spiraling out of control".
The knowledge gleaned from this research will help brain scientists understand at a very basic level how this complex organ develops, how its components work individually and together, and what goes wrong in certain psychiatric and neurological disorders.
At the very basic level, you should spray paint it with a gray primer coat.
