Hi kmanu,

I believe this happens with the PHP Unirest class if you do not encode the data first,
Please try wrap your API parameters using http_build_query() like this:

http_build_query(array(“ip” => “162.209.106.137”, “reverse-lookup” => “true”))

Let us know if you still have any issues, we are also going to check with the Mashape developers if this should be something that Unirest can do automatically (as the example given for PHP Unirest does not mention this…)

Cheers!