diff --git a/clientside_validation.api.php b/clientside_validation.api.php
new file mode 100644
index 0000000..bab25be
--- /dev/null
+++ b/clientside_validation.api.php
@@ -0,0 +1,41 @@
+<?php
+
+/**
+ * @file
+ * Hooks specific to the Clientside Validation module.
+ */
+
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * @addtogroup hooks
+ * @{
+ */
+
+/**
+ * Alter the information provided in CvValidator Annotation.
+ *
+ * @param array $widget_selectors
+ *   The array of widget selector plugins, keyed on the machine-readable name.
+ */
+function hook_clientside_validation_validator_info_alter(array &$widget_selectors) {
+
+}
+
+/**
+ * Check whether or not an element should be validated.
+ *
+ * @param mixed $element
+ *   Element array.
+ * @param \Drupal\Core\Form\FormStateInterface $form_state
+ *   Form State object.
+ * @param string $form_id
+ *   Form ID.
+ */
+function hook_clientside_validation_should_validate($element, FormStateInterface &$form_state, $form_id) {
+
+}
+
+/**
+ * @} End of "addtogroup hooks".
+ */