is there any ai solution (decision tree, path find, behaviour) that compatible with mecanim?
+1
Download this: https://www.assetstore.unity3d.com/#/content/5328
There is a Unity NavMesh example scene.
it is for pro and it is just path finder. i need more 
AI and Mecanim is something different. You have to only attach correct state to mecanim animation.
This is only complicated if you have a lots of mecanim states / lots of AI states. Do you have any requirements what do you expect?
Someone did a really good example of how to use mecanim with AI, its in the forum somewhere…
Edit: you seriously didn’t search? http://forum.unity3d.com/threads/166633-Mecanim-quot-AI-quot-Free-Sources
as a result of decision tree ai component should set mecanim state. if the result is attach mecanim should go to attach state from idle state. is there any package like that? if it gives full source code i can write integration code.
i need a tool like playmaker. i can write my custom actions easyly. so i could integrate it with mecanim and others.
i remember a youtube video. it was navmesh integration. there were several white men walking on terrain. is it what you mention?