diff --git a/includes/utilities.php b/includes/utilities.php
index 0445f6a..bec977f 100644
--- a/includes/utilities.php
+++ b/includes/utilities.php
@@ -48,14 +48,25 @@ function ensureUserHasApiKey($user) {
 /**
  * Executes a GET request to the given API endpoint and returns the JSON response as an associative array.
  *
- * @param string $apiEndpoint The URL of the API endpoint to call
+ * Uses the v2 Torn API authentication scheme by sending the API key in an
+ * `Authorization: ApiKey <key>` header. The key is never transmitted as a
+ * query parameter.
  *
- * @throws Exception If the API call fails or if the response is invalid JSON
+ * @param string $apiEndpoint The URL of the API endpoint to call
+ * @param string $apiKey      The v2 API key to authenticate with
+ *
+ * @throws ApiKeyMissingException If the API key is empty
+ * @throws CurlErrorException     If the cURL call fails
+ * @throws JsonDataException      If the response body cannot be decoded as JSON
  *
  * @return array The JSON response from the API
  */
-function executeApiCall($apiEndpoint) {
-    $headers = ["Content-Type: application/json"];
+function executeApiCall($apiEndpoint, $apiKey) {
+    if (empty($apiKey)) {
+        throw new ApiKeyMissingException('API key is required for executeApiCall.');
+    }
+
+    $headers = ["Authorization: ApiKey $apiKey"];
     $ch = curl_init();
     curl_setopt($ch, CURLOPT_URL, $apiEndpoint);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
@@ -64,7 +75,7 @@ function executeApiCall($apiEndpoint) {
     $response = curl_exec($ch);
 
     if (curl_errno($ch)) {
-        throw new CurlErrorException("cURL error: " . curl_error($ch));
+        throw new CurlErrorException('cURL error: ' . curl_error($ch));
     }
 
     curl_close($ch);
@@ -72,7 +83,7 @@ function executeApiCall($apiEndpoint) {
     $responseData = json_decode($response, true);
 
     if (json_last_error() !== JSON_ERROR_NONE) {
-        throw new JsonDataException("Failed to decode JSON response: " . json_last_error_msg());
+        throw new JsonDataException('Failed to decode JSON response: ' . json_last_error_msg());
     }
 
     return $responseData;
@@ -238,3 +249,16 @@ function getSign($number) {
 
     return '$';
 }
+
+/**
+ * Print a variable to the console for debugging purposes.
+ *
+ * @param mixed $data The data to print to the console.
+ *
+ * @return void
+ */
+function consoleLog( $data ) {
+    echo '<script>';
+    echo 'console.log(' . json_encode($data) . ')';
+    echo '</script>';
+}