Get Twitter Mentions for not authenticated user


when I look at the API Docs of Twitter for mentions it says the following

Returns the 20 most recent mentions (tweets containing a users’s @screen_name) for the authenticating user. The timeline returned is the equivalent of the one seen when you view your mentions on This method can only return up to 800 tweets. See Working with Timelines for…

However, another site I found gets the mentions without having the user authenticated. enter image description here

How exactly do I get those mentions? From the picture I posted it looks like the site gets only the public data, so how does it get the mentions when the API states that the mentions are only for the authenticating user?


Also looking for an answer on how to get mentions for non-authenticating users. Can you give the link to the site you got this info from? I can’t see the image.