APIs are early sentinels. They are originally built as application development unit, but are quickly being given (cyber)military tasks. They lack dedicated offensive weaponry, but like a Sentinel, or maybe a Bobcat backhoe, they possess a number of potential attachments that can be weaponized pretty effectively.
Kin Lane explains how with a bit of maneuverinh that APIs have the danger of being weaponised. Whether it be notifications, location or storage, Lane argues that we do not really know the consequences for the future.