Well, normally this isn't a code writing service, but if it helps Perl programmers, I guess it's for a good cause ;-) Will this documentation be public somewhere?

If I understood the C# code correctly, here's one way to do it with HTTP::Tiny and URI (for SSL support, IO::Socket::SSL and Net::SSLeay need to be installed too):

#!/usr/bin/env perl
use warnings;
use strict;
use URI;
use HTTP::Tiny;

my $uri = URI->new('https://api.zerobounce.net/v1/validate');
$uri->query_form(
    apikey    => 'Your Secret Key',
    email     => 'example@example.com',
    #ipaddress => '99.123.12.122',
);
my $response = HTTP::Tiny->new->get( $uri,
    { timeout=>15 } ); # in seconds
die "Failed! $response->{status} $response->{reason}\n"
    unless $response->{success};
my $responseString = $response->{content};
[download]

an online Perl compiler that allows JSON REST Calls

I'd recommend installing Perl locally for testing (and perhaps just pointing the script at a different URL for testing). It comes pre-installed on many *NIX systems, and on Windows, Strawberry Perl makes things fairly easy. All of the aforementioned modules are included in the latest Strawberry Perl release, while on *NIX, some of them may need to be installed.

It may help "Perl" programmers, but I think an actual Perl programmer would just look at the C# code and write a Perl program (as two actual Perl programmers have already done :).

---

Give a man a fish:  <%-{-{-{-<

Yeah, really a REST API document only needs to show the routes and parameters, and the data returned ... not a client implementation. Honestly that would get in the way of seeing and grasping the needed info.



The way forward always starts with a minimal test.

Roughly:

use strict; use warnings;
use URI::Escape 'uri_escape'; 
use HTTP::Tiny;
use Try::Tiny;

my $api_key = 'Your Secret Key';
my $email   = 'example@example.com';
my $url     = 'https://api.zerobounce.net/v1/validate';
my $params  = '?apikey=' . $apikey . '&email=' . $email;
my $api_url = uri_escape( $url . $params );

my $ua = HTTP::Tiny->new( timeout => 15 ); # seconds

my $response_string;
my $api_error;
try {
    my $res = $ua->get( $api_url );
    if ( $res->{'success'} ) {
        $response_string = $res->{'content'};
    } else {
        $api_error = $res->{'status'} . ' ' . $res->{'reason'};
    }
} catch {
    # Handles exceptions
    warn 'Something really bad happened: ' . $_;
};

__END__
[download]

See HTTP::Tiny.

I'm not sure that you wanted the response content in your response string; if you really want the entire response you can get it with $res->as_string but you'd have to use a different HTTP library (e.g. LWP::Simple).

Hope this helps!

Now, this executable will be unsigned, and refuse to run (without a windows popup where you have to manually click). One of the workarounds is to Allow an Unsigned Application to Run As Privileged, but as a C# dev you should know those tricks.