With this plugin, you can see who has a auto-clicks. I do a video here: (Not disponible now)
This is the config:
MinClick is the minimum number of click before the admins have a message.
TimeSpam is an "anti-spam security", not that every second, admins are spammed. For example, if TimeSpam is 5, admins will have every 5 seconds a message that the x player doing y clicks per second.
Clicks.watch is the only permission, if a player Spam-Clicks, Players who get this permission see the message.