diff --git a/scripts/check_conversations_for_phone.php b/scripts/check_conversations_for_phone.php
new file mode 100644
index 0000000..fa866b9
--- /dev/null
+++ b/scripts/check_conversations_for_phone.php
@@ -0,0 +1,7 @@
+<?php
+require_once __DIR__ . '/../config/config.php';
+$db = Database::getInstance();
+$phone = $argv[1] ?? '573022548060';
+$rows = $db->fetchAll("SELECT c.id, c.message_id, c.direction, c.message_type, c.content, c.created_at, u.phone_number FROM conversations c JOIN users u ON c.user_id=u.id WHERE u.phone_number = ? ORDER BY c.created_at DESC LIMIT 5", [$phone]);
+header('Content-Type: application/json');
+echo json_encode($rows, JSON_PRETTY_PRINT);
diff --git a/scripts/check_graph_phone.php b/scripts/check_graph_phone.php
new file mode 100644
index 0000000..31f8488
--- /dev/null
+++ b/scripts/check_graph_phone.php
@@ -0,0 +1,29 @@
+<?php
+require_once __DIR__ . '/../config/config.php';
+$token = getConfigFromDB('whatsapp_token', '');
+$phoneId = getConfigFromDB('whatsapp_phone_number_id', '');
+$maskedToken = $token ? substr($token,0,6).'...'.substr($token,-4) : '(empty)';
+echo "Phone ID: $phoneId\nToken: $maskedToken\n\n";
+$url = "https://graph.facebook.com/v22.0/{$phoneId}?access_token=".urlencode($token);
+$ch = curl_init();
+curl_setopt_array($ch, [
+    CURLOPT_URL => $url,
+    CURLOPT_RETURNTRANSFER => true,
+    CURLOPT_TIMEOUT => 15,
+    CURLOPT_SSL_VERIFYPEER => true
+]);
+$response = curl_exec($ch);
+$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+$err = curl_error($ch);
+curl_close($ch);
+if ($err) {
+    echo "cURL error: $err\n";
+    exit(1);
+}
+echo "HTTP Code: $code\n";
+echo "Response:\n";
+echo $response . "\n";
+$decoded = json_decode($response, true);
+if ($decoded && isset($decoded['error'])) {
+    echo "\nDetected error message: " . ($decoded['error']['message'] ?? json_encode($decoded['error'])) . "\n";
+}
diff --git a/scripts/run_diagnose_cli.php b/scripts/run_diagnose_cli.php
new file mode 100644
index 0000000..66cc733
--- /dev/null
+++ b/scripts/run_diagnose_cli.php
@@ -0,0 +1,3 @@
+<?php
+$_GET['debug'] = 'true';
+require_once __DIR__ . '/../api/diagnose_whatsapp.php';
diff --git a/scripts/test_get_users.php b/scripts/test_get_users.php
new file mode 100644
index 0000000..c5d2dd0
--- /dev/null
+++ b/scripts/test_get_users.php
@@ -0,0 +1,13 @@
+<?php
+// Script de prueba para ejecutar api/get_users.php en modo debug
+$_GET['debug'] = 'true';
+chdir(__DIR__ . '/../api');
+ob_start();
+try {
+    include 'get_users.php';
+} catch (Throwable $t) {
+    echo "Throwable: " . $t->getMessage() . "\n";
+    echo $t->getTraceAsString() . "\n";
+}
+$out = ob_get_clean();
+echo $out;
\ No newline at end of file
diff --git a/scripts/test_send_text.php b/scripts/test_send_text.php
new file mode 100644
index 0000000..79165e4
--- /dev/null
+++ b/scripts/test_send_text.php
@@ -0,0 +1,12 @@
+<?php
+require_once __DIR__ . '/../config/config.php';
+$wh = new WhatsAppService();
+$to = '573022548060';
+$message = 'Prueba de envío (desarrollo) ' . date('Y-m-d H:i:s');
+try {
+    $res = $wh->sendTextMessage($to, $message);
+    echo "Response:\n";
+    echo json_encode($res, JSON_PRETTY_PRINT) . "\n";
+} catch (Exception $e) {
+    echo "Error: " . $e->getMessage() . "\n";
+}
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diff --git a/tests/output_final.html b/tests/output_final.html
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diff --git a/tests/service_output.html b/tests/service_output.html
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diff --git a/tests/service_tests.php b/tests/service_tests.php
index aa5acd3..fbc34d5 100644
--- a/tests/service_tests.php
+++ b/tests/service_tests.php
@@ -252,8 +252,12 @@ class ServiceTestSuite {
         });
         
         $this->serviceTest("Test gestión de usuarios", function() {
-            $testPhone = '573168950803';
-            
+            // Generar teléfono de prueba único para evitar colisiones
+            $testPhone = '573' . rand(100000000, 999999999);
+
+            // Asegurar limpieza previa (por si quedó un registro previo con mismo número)
+            $this->db->execute("DELETE FROM users WHERE phone_number = :phone", ['phone' => $testPhone]);
+
             // Crear usuario de prueba
             $userId = $this->db->insert('users', [
                 'phone_number' => $testPhone,