diff --git a/api/payment/sdk.php b/api/payment/sdk.php
new file mode 100644
index 0000000..f3bf259
--- /dev/null
+++ b/api/payment/sdk.php
@@ -0,0 +1,77 @@
+<?
+class PiNetwork {
+  var $baseUrl;
+  var $headers = array();
+  var $compression;
+  var $apiKey;
+  var $wallet;
+  
+  function __construct($apiKey= string, $walletPrivateSeed= string) {
+    $this->compression='gzip';
+    $this->apiKey=$apiKey;
+    $this->wallet=$walletPrivateSeed;
+    $this->baseUrl='https://api.minepi.com';
+  }
+
+  function get($EndPoint) {
+    $url= $this->baseUrl . "/v2/payments/" . $EndPoint;  
+    $process = curl_init($url);
+    curl_setopt($process, CURLOPT_HTTPHEADER, $this->headers);
+    curl_setopt($process, CURLOPT_TIMEOUT, 30);
+    curl_setopt($process, CURLOPT_RETURNTRANSFER, 1);
+    curl_setopt($process, CURLOPT_FOLLOWLOCATION, 1);
+
+    curl_setopt($process, CURLOPT_VERBOSE, false);
+    curl_setopt($process, CURLOPT_SSL_VERIFYPEER, false);
+    curl_setopt($process, CURLOPT_SSL_VERIFYHOST, false);
+    curl_setopt($process, CURLOPT_SSL_VERIFYSTATUS, false);
+
+    $return = curl_exec($process);
+    curl_close($process);
+    return $return;
+  }
+
+  function post($EndPoint,$data) {
+    $url= $this->baseUrl . "/v2/payments/" . $EndPoint;  
+    $process = curl_init($url);
+
+    curl_setopt($process, CURLOPT_HTTPHEADER, $this->headers);
+    curl_setopt($process, CURLOPT_ENCODING , $this->compression);
+    curl_setopt($process, CURLOPT_TIMEOUT, 30);
+    curl_setopt($process, CURLOPT_POSTFIELDS, $data);
+    curl_setopt($process, CURLOPT_RETURNTRANSFER, 1);
+    curl_setopt($process, CURLOPT_FOLLOWLOCATION, 1);
+
+    curl_setopt($process, CURLOPT_VERBOSE, false);
+    curl_setopt($process, CURLOPT_SSL_VERIFYPEER, false);
+    curl_setopt($process, CURLOPT_SSL_VERIFYHOST, false);
+    curl_setopt($process, CURLOPT_SSL_VERIFYSTATUS, false);
+
+    curl_setopt($process, CURLOPT_POST, 1);
+    $return = curl_exec($process);
+    curl_close($process);
+    return $return;
+  }
+  
+  function ApprovalPayment($data) {
+    $this->headers[] = "Authorization: key ".$this->apiKey;
+    return $this->post($data['paymentId'].'/approve', '');
+  }
+  
+  function CancelPayment($data) {
+    $this->headers[] = "Authorization: key ".$this->apiKey;
+    return $this->post($data['paymentId'].'/cancel', '');
+  }
+  
+  function CompletePayment($data) {
+    $this->headers[] = "Authorization: key ".$this->apiKey;
+    $this->headers[] = 'Content-Type: application/json';
+    return $this->post($data['paymentId'].'/complete', '{"txid":"'.$data['txid'].'"}');
+  }
+
+  function InCompletePayment($data) {
+    $this->headers[] = "Authorization: key ".$this->apiKey;
+    $this->headers[] = 'Content-Type: application/json';
+    return $this->post($data['identifier'].'/complete', '{"txid":"'.$data['transaction']['txid'].'"}');
+  }
+}