diff --git a/src/codebird.php b/src/codebird.php
index f4e8771..146d9b2 100644
--- a/src/codebird.php
+++ b/src/codebird.php
@@ -1045,7 +1045,7 @@ public function oauth_authenticate($force_login = NULL, $screen_name = NULL, $ty
       throw new \Exception('To get the ' . $type . ' URL, use the correct third parameter, or omit it.');
     }
     if ($this->_oauth_token === null) {
-      throw new \Exception('To get the ' . $type . ' URL, the OAuth token must be set.');
+      throw new CodebirdCredentialsException('To get the ' . $type . ' URL, the OAuth token must be set.');
     }
     $url = self::$_endpoints['oauth'] . 'oauth/' . $type . '?oauth_token=' . $this->_url($this->_oauth_token);
     if ($force_login) {
@@ -1240,7 +1240,7 @@ private function _getProxyData($name)
   protected function _oauth2TokenCurl()
   {
     if (self::$_consumer_key === null) {
-      throw new \Exception('To obtain a bearer token, the consumer key must be set.');
+      throw new CodebirdCredentialsException('To obtain a bearer token, the consumer key must be set.');
     }
     $post_fields = [
       'grant_type' => 'client_credentials'
@@ -1258,7 +1258,7 @@ protected function _oauth2TokenCurl()
 
     // catch request errors
     if ($result === false) {
-      throw new \Exception('Request error for bearer token: ' . $this->_curl_error($connection));
+      throw new CodebirdAuthException('Request error for bearer token: ' . $this->_curl_error($connection));
     }
 
     // certificate validation results
@@ -1280,14 +1280,14 @@ protected function _oauth2TokenCurl()
   protected function _oauth2TokenNoCurl()
   {
     if (self::$_consumer_key == null) {
-      throw new \Exception('To obtain a bearer token, the consumer key must be set.');
+      throw new CodebirdCredentialsException('To obtain a bearer token, the consumer key must be set.');
     }
 
     $url      = self::$_endpoints['oauth'] . 'oauth2/token';
     $hostname = parse_url($url, PHP_URL_HOST);
 
     if ($hostname === false) {
-      throw new \Exception('Incorrect API endpoint host.');
+      throw new CodebirdEndpointException('Incorrect API endpoint host.');
     }
 
     $contextOptions = [
@@ -1479,7 +1479,7 @@ protected function _url($data)
   protected function _sha1($data)
   {
     if (self::$_consumer_secret === null) {
-      throw new \Exception('To generate a hash, the consumer secret must be set.');
+      throw new CodebirdCredentialsException('To generate a hash, the consumer secret must be set.');
     }
     if (!function_exists('hash_hmac')) {
       throw new \Exception('To generate a hash, the PHP hash extension must be available.');
@@ -1554,7 +1554,7 @@ protected function _getSignature($httpmethod, $method, $base_params)
   protected function _sign($httpmethod, $method, $params = [])
   {
     if (self::$_consumer_key === null) {
-      throw new \Exception('To generate a signature, the consumer key must be set.');
+      throw new CodebirdCredentialsException('To generate a signature, the consumer key must be set.');
     }
     $sign_base_params = array_map(
       [$this, '_url'],
@@ -1757,7 +1757,7 @@ protected function _getMultipartRequestFromParams($method_template, $border, $pa
     foreach ($params as $key => $value) {
       // is it an array?
       if (is_array($value)) {
-        throw new \Exception('Using URL-encoded parameters is not supported for uploading media.');
+        throw new CodebirdMediaException('Using URL-encoded parameters is not supported for uploading media.');
       }
       $request .=
         '--' . $border . "\r\n"
@@ -1888,7 +1888,7 @@ protected function _fetchRemoteFile($url)
       ) {
         return $result;
       }
-      throw new \Exception('Downloading a remote media file failed.');
+      throw new CodebirdMediaException('Downloading a remote media file failed.');
       return false;
     }
     // no cURL
@@ -1908,7 +1908,7 @@ protected function _fetchRemoteFile($url)
     ) {
       return $result;
     }
-    throw new \Exception('Downloading a remote media file failed.');
+    throw new CodebirdMediaException('Downloading a remote media file failed.');
     return false;
   }
 
@@ -2039,7 +2039,7 @@ protected function _callApi($httpmethod, $method, $method_template, $params = []
       && $this->_oauth_token === null
       && substr($method, 0, 5) !== 'oauth'
     ) {
-        throw new \Exception('To call this API, the OAuth access token must be set.');
+        throw new CodebirdCredentialsException('To call this API, the OAuth access token must be set.');
     }
     // use separate API access for streaming API
     if ($this->_detectStreaming($method) !== false) {
@@ -2138,7 +2138,7 @@ protected function _callApiNoCurl(
 
     $hostname = parse_url($url, PHP_URL_HOST);
     if ($hostname === false) {
-      throw new \Exception('Incorrect API endpoint host.');
+      throw new CodebirdEndpointException('Incorrect API endpoint host.');
     }
 
     $request_headers[] = 'Authorization: ' . $authorization;
@@ -2310,7 +2310,7 @@ protected function _getBearerAuthorization()
     if (self::$_consumer_key === null
       && self::$_bearer_token === null
     ) {
-      throw new \Exception('To make an app-only auth API request, consumer key or bearer token must be set.');
+      throw new CodebirdCredentialsException('To make an app-only auth API request, consumer key or bearer token must be set.');
     }
     // automatically fetch bearer token, if necessary
     if (self::$_bearer_token === null) {
@@ -2387,7 +2387,7 @@ protected function _callApiStreaming(
     $path     = parse_url($url, PHP_URL_PATH);
     $query    = parse_url($url, PHP_URL_QUERY);
     if ($hostname === false) {
-      throw new \Exception('Incorrect API endpoint host.');
+      throw new CodebirdEndpointException('Incorrect API endpoint host.');
     }
 
     $request_headers[] = 'Authorization: ' . $authorization;
@@ -2649,4 +2649,36 @@ protected function _parseApiReply($reply)
     }
     return $parsed;
   }
+
+}
+
+/**
+ * Catch errors when authtoken is expired
+ */
+class CodebirdAuthException extends \Exception {
+	
+}
+
+
+/**
+ * Catch error when credentials are not set correclty
+ */
+class CodebirdCredentialsException extends \Exception {
+	
 }
+
+/**
+ * Catch errors r elated to bad endpoi ts
+ */
+class CodebirdEndpointException extends \Exception {
+	
+}
+
+/*
+ * Catch errors relatedto media
+ */
+
+class CodebirdMediaException extends \Exception {
+	
+}
+