It can help an AI out with the harmonic theory. If an AI is composing in a key, it needs to know which notes belong together, how keys relate, what modal character sounds like. getModeNotes, getRelativeMinorKey, getCircleOfFifths give you those constraints programmatically, which means an AI can make harmonically grounded decisions rather than picking notes at random.
It's the more of a "what notes belong together", rather than a composition engine. So it can help AI-generated music not sound harmonically off.