RTP & Get Visitor Data

[JD_Nelson]

My dev guy is struggling to figure out the scripts here: http://developers.marketo.com/documentation/websites/rtp-js-api/

We are trying to pull out the Visitor Data by adding

     rtp('get', 'visitor', someCallbackFunction(visitor));

to our RTP tag. But now he says he needs a way to call the function. But there's no documentation around that.

I've read other topics on here regarding munchkin calls and there's usually always includes stuff like this:

https://<host>/rest/v1/leads.json?filterType=cookie&filterValues=<cookie>&fields=email,firstName,lastName,company&access_token=<token>

So - is there a json script I can customize to utilize the code above? Are we completely misreading the documentation and doing something wrong? Thanks for the help!