Ajax data parameters not working

I'm trying to populate a datatable with server side processing and have set the serverSide option to true with the following ajax configuration.

        ajax: {
            url: 'get-data',
            type: 'get',
            contentType: "application/json",
            dataSrc: function(d) {
                return d.data;
            },
            error: function(jqXHR, textStatus, errorThrown) {
                console.log(jqXHR, textStatus, errorThrown);
            },
        },

However, the only input my get-data API receives is {"\/get-data":null}. I'm not sure what I'm doing wrong as I thought there should be a number of automatic sent parameters including "start" and "length". Does anyone know what I'm doing wrong? Any help is much appreciated! Thanks in advance!