API key has nothing to do with what an API is. API is just how you ask the software to do something, or tell it what to do. API key is just for it to confirm wh

API key has nothing to do with what an API is. API is just how you ask the software to do something, or tell it what to do. API key is just for it to confirm who you are. Before the internet, every piece of software still had an API. Even the OS has an API.