Not OP but I used to make bots for MMOs for personal use (never sold them). I used Sikuli to write Python scripts to repeat automated tasks for me to basically grind 24/7. Sikuli was pretty great because it makes it easy to do image recognition on the screen and click on specific buttons.

I could have my bots play minigames as long as I could write a basic AI to do it based on the the objects on screen. It also won't flag any anti-cheat software because it doesn't hook into the game at all, just watches the screen and emulates a mouse+keyboard.