diff --git a/server/core/Compute.php b/server/core/Compute.php
index 8d1c8b6..3df3ada 100644
--- a/server/core/Compute.php
+++ b/server/core/Compute.php
@@ -1 +1,147 @@
+<?php
+//namespace istic-openstack\Server\core;
+// TODO introduce error-handling based on errors specific to the compute module
+use OpenStack\Common\Error;
+
+class compute 
+{
+        /** @var App $app protected, contains the main app object */
+        protected $app;
+
+        /** @var OpenStack\Identity $libClass protected, contains the library Compute object */
+        protected $libClass;
+
+
+    public function __construct($app)
+    {
+                $this->app = $app;
+                $this->libClass = $app->getLibClass("Compute");
+    }
+    /**
+     * List servers.
+     * @return array
+     */
+        public function listServers()
+        {
+                $servers = $this->libClass->listServers();
+                return $servers;
+        }
+        /**
+         * List flavors.
+         * @return array
+         */
+        public function listFlavors()
+        {
+                $flavors = $this->libClass->listFlavors();
+                return $flavors;
+        }
+        /**
+         * List images.
+         * @return array
+         */
+        public function listImages()
+        {
+                $images = $this->libClass->listImages();
+                return $images;
+        }
+        /**
+         * Create server.
+         * @return array
+         
+        public function createServer(array $options)
+        {
+
+                $server = $this->libClass->createServer();
+        }
+        /**
+         * Get server details.
+         * @return array
+         */
+        public function getServer(array $options = [])
+        {
+                $server = $this->libClass->getServer($options);
+                return $server;
+        }
+        /**
+         * Get flavor details.
+         * @return array
+         */
+        public function getFlavor(array $options = [])
+        {
+                $flavor = $this->libClass->getFlavor($options);
+                return $flavor;
+        }
+        /**
+         * Get image details.
+         * @return array
+         */
+        public function getImage(array $options = [])
+        {
+                $image = $this->libClass->getImage($options);
+                return $image;
+        }
+        //working on tests
+        public function update()
+        {
+                $image = $this->app->getServer(array $options = []);
+
+        }
+        public function delete()
+        {
+                //TODO
+        }
+        public function changePassword($newPassword)
+        {
+                //TODO
+        }
+        public function reboot($type = Enum::REBOOT_SOFT)
+        {
+                //TODO
+        }
+        public function rebuild(array $options)
+        {
+                //TODO
+        }
+        public function resize($flavorId)
+        {
+                //TODO
+        }
+        public function confirmResize()
+        {
+                //TODO
+        }
+        public function revertResize()
+        {
+                //TODO
+        }
+        public function createImage(array $options)
+        {
+                //TODO
+        }
+        public function listAddresses(array $options = [])
+        {
+                //TODO
+        }
+        public function getMetadata()
+        {
+                //TODO
+        }
+        public function resetMetadata(array $metadata)
+        {
+                //TODO
+        }
+        public function mergeMetadata(array $metadata)
+        {
+                //TODO
+        }
+        public function getMetadataItem($key)
+        {
+                //TODO
+        }
+        public function deleteMetadataItem($key)
+        {
+                //TODO
+        }
+
+}