Can I Access The Value To Validate In Getclientvalidationrules Custom Validation

I ended up using an ajax call inside the javascript validation file where I can access the value to be validated as follows:

$.validator.addMethod("custom-validation-name", function (value, element, params) {
    var valid = false;
    $.ajax({
        url: "/Controller/Action",
        type: "Get",
        async:false,
        data: { value-to-validate: value },
        success: function (data) {
            valid = parseInt(data) > 0;
        }
    });

    return valid;
});

Create an action in the controller to check weather the value is valid or not
make sure that the async option is set to false