diff --git a/src/Appwrite/Insights/Validator/CTAs.php b/src/Appwrite/Insights/Validator/CTAs.php
index 848253bc13..8f0457f33c 100644
--- a/src/Appwrite/Insights/Validator/CTAs.php
+++ b/src/Appwrite/Insights/Validator/CTAs.php
@@ -45,10 +45,15 @@ class CTAs extends Validator
                 return false;
             }
 
-            foreach (['label', 'service', 'method'] as $required) {
+            $maxLengths = ['label' => 256, 'service' => 64, 'method' => 64];
+            foreach ($maxLengths as $required => $maxLength) {
                 if (!isset($entry[$required]) || !\is_string($entry[$required]) || $entry[$required] === '') {
                     return false;
                 }
+                if (\strlen($entry[$required]) > $maxLength) {
+                    $this->message = "CTA `{$required}` must not exceed {$maxLength} characters.";
+                    return false;
+                }
             }
 
             if (isset($entry['params']) && !\is_array($entry['params']) && !\is_object($entry['params'])) {