diff --git a/composer.json b/composer.json
index 8ccf4eb..6de4c51 100644
--- a/composer.json
+++ b/composer.json
@@ -12,6 +12,7 @@
     ],
     "require": {},
     "require-dev": {
+        "friendsofphp/php-cs-fixer": "@stable",
         "phpunit/phpunit": "< 6",
         "satooshi/php-coveralls": "dev-master"
     },
@@ -19,5 +20,13 @@
         "psr-4": {
             "Cloudflare\\": "src/CloudFlare"
         }
+    },
+    "scripts": {
+        "phpcs": [
+            "./vendor/bin/php-cs-fixer --verbose --rules=phpdoc_add_missing_param_annotation fix --dry-run --using-cache=no src"
+        ],
+        "phpcs-fix": [
+            "./vendor/bin/php-cs-fixer --verbose --rules=phpdoc_add_missing_param_annotation fix --using-cache=no src"
+        ]
     }
 }
diff --git a/src/CloudFlare/Certificates.php b/src/CloudFlare/Certificates.php
index c4ece74..4705c76 100644
--- a/src/CloudFlare/Certificates.php
+++ b/src/CloudFlare/Certificates.php
@@ -20,6 +20,9 @@ class Certificates extends Api
      * List Certificates
      * List all existing CloudFlare-issued Certificates for a given zone. Use your Certificates API Key as your
      * User Service Key when calling this endpoint
+     * @param null|mixed $page
+     * @param null|mixed $per_page
+     * @param null|mixed $direction
      */
     public function certificates($page = null, $per_page = null, $direction = null)
     {
diff --git a/src/CloudFlare/Organizations/LoadBalancers/Pools.php b/src/CloudFlare/Organizations/LoadBalancers/Pools.php
index 8f95714..c3fa667 100644
--- a/src/CloudFlare/Organizations/LoadBalancers/Pools.php
+++ b/src/CloudFlare/Organizations/LoadBalancers/Pools.php
@@ -107,6 +107,7 @@ public function update($organization_identifier, $identifier, $name, $origins, $
      * Delete a pool
      * Delete a configured pool
      *
+     * @param string $organization_identifier
      * @param string $identifier
      */
     public function delete_pool($organization_identifier, $identifier)
diff --git a/src/CloudFlare/User.php b/src/CloudFlare/User.php
index 642b473..aa8b9f4 100644
--- a/src/CloudFlare/User.php
+++ b/src/CloudFlare/User.php
@@ -133,6 +133,7 @@ public function finalize_two_factor_authentication($auth_token)
      * Disable two-factor authentication for your CloudFlare user account
      *
      * @param int The token provided by the two-factor authenticator
+     * @param mixed $auth_token
      */
     public function disable_two_factor_authentication($auth_token)
     {