Stamps.com - Tracking

{
    "carrier": "stamps",
    "action": "track",
    "params": {
      "username": "YOUR_USERNAME",
      "password": "YOUR_PASSWORD",
      "tracking_number": "9374889878102610545694"
    }
}

<?php
$rs = new RocketShipIt;
$response = $rs->request(
array (
  'carrier' => 'stamps',
  'action' => 'track',
  'params' => 
  array (
    'username' => 'YOUR_USERNAME',
    'password' => 'YOUR_PASSWORD',
    'tracking_number' => '9374889878102610545694',
  ),
)
);

rs.request(
  {'action': 'track',
 'carrier': 'stamps',
 'params': {'password': 'YOUR_PASSWORD',
            'tracking_number': '9374889878102610545694',
            'username': 'YOUR_USERNAME'}}

)

rs.request(
  {"carrier"=>"stamps",
 "action"=>"track",
 "params"=>
  {"username"=>"YOUR_USERNAME",
   "password"=>"YOUR_PASSWORD",
   "tracking_number"=>"9374889878102610545694"}}

)

rocketshipit.request(
  {
    "carrier": "stamps",
    "action": "track",
    "params": {
      "username": "YOUR_USERNAME",
      "password": "YOUR_PASSWORD",
      "tracking_number": "9374889878102610545694"
    }
}
)