Not OP but for me the appeal would be in botting a game that's made for humans, and not a game made specifically made for botting. Let me use autohotkey, or modify the client, or do any of the things real botters do, don't worry about providing an API. Just let me register a character as a bot and restrict it to a separate server that can't interact with the main game servers/economy, and disable anti-botting protection. Maybe make it require something like CURLing an endpoint so that regular users can't accidentally create a character on the bot world.

But this would probably never fly because it would become a training ground for people who make malicious bots.