Not able to get the data from my wordpress website

I am not able to connect the server and get the data from my WordPress website with version ^0.2.1
I have tried with all the examples. But I am not getting the data from my website.
Could you please help me what is the problem or do I need to install any plugin in my server? but I am not using any authentication. i just want to fetch the posts from my website. but it is not working.