zabbix-agent-addons/zabbix_scripts/disco_nginx

#!/usr/bin/perl -w

use strict;
use warnings;
use LWP::Simple;
use JSON;

my $json;
@{$json->{data}} = ();

my $status = get('http://127.0.0.1/nginx-status');

if ($status){
  push @{$json->{data}}, {"{#NGINX_STATUS_URI}" => 'http://127.0.0.1/nginx-status'};
}

print to_json($json);
exit(0);