diff --git a/api/v3/TwingleCampaign/Sync.php b/api/v3/TwingleCampaign/Sync.php
new file mode 100644
index 0000000..4ba8332
--- /dev/null
+++ b/api/v3/TwingleCampaign/Sync.php
@@ -0,0 +1,123 @@
+<?php
+
+use CRM_TwingleCampaign_ExtensionUtil as E;
+use CRM_TwingleCampaign_BAO_TwingleCampaign as TwingleCampaign;
+
+/**
+ * TwingleCampaign.Sync API specification (optional)
+ * This is used for documentation and validation.
+ *
+ * @param array $spec description of fields supported by this API call
+ *
+ * @see https://docs.civicrm.org/dev/en/latest/framework/api-architecture/
+ */
+function _civicrm_api3_twingle_campaign_Sync_spec(array &$spec) {
+  $spec['id'] = [
+    'name'         => 'id',
+    'title'        => E::ts('Twingle Campaign ID'),
+    'type'         => CRM_Utils_Type::T_INT,
+    'api.required' => 0,
+    'description'  => E::ts('The Twingle Campaign ID'),
+  ];
+  $spec['project_id'] = [
+    'name'         => 'project_id',
+    'title'        => E::ts('Parent Twingle Project ID'),
+    'type'         => CRM_Utils_Type::T_INT,
+    'api.required' => 0,
+    'description'  => E::ts('Twingle ID of the parent TwingleProject'),
+  ];
+}
+
+/**
+ * # TwingleCampaign.Sync API
+ *
+ * @param array $params
+ *
+ * @return array
+ *   API result descriptor
+ *
+ * @throws \CiviCRM_API3_Exception
+ * @see civicrm_api3_create_success
+ */
+function civicrm_api3_twingle_campaign_Sync(array $params): array {
+
+  // filter parameters
+  $allowed_params = [];
+  _civicrm_api3_twingle_campaign_Sync_spec($allowed_params);
+  $params = array_intersect_key($params, $allowed_params);
+
+  // Get TwingleCampaigns
+  $campaigns = civicrm_api3('TwingleCampaign', 'get', $params);
+
+  $returnValues = [];
+  $errors_occurred = 0;
+
+  if ($campaigns['is_error'] == 0 && $campaigns['count'] > 0) {
+
+    // Instantiate and re-create TwingleCampaigns
+    foreach ($campaigns['values'] as $campaign) {
+      try {
+        $campaign = new TwingleCampaign($campaign, $campaign['id']);
+      } catch (CiviCRM_API3_Exception $e) {
+        $errors_occurred++;
+        $status = [
+          "id"                => $campaign['id'],
+          "name"              => $campaign['name'],
+          "parent_project_id" => $campaign['parent_project_id'],
+          "status"            => 'TwingleCampaign could not get instantiated',
+        ];
+        $returnValues[$campaign->getId()] = $status;
+        Civi::log()->error(
+          E::LONG_NAME .
+          ' could not instantiate TwingleCampaign campaign',
+          $status
+        );
+        continue;
+      }
+      try {
+        $campaign->create(TRUE);
+        $returnValues[$campaign->getId()] =
+          $campaign->getResponse('TwingleCampaign updated');
+      } catch (CiviCRM_API3_Exception $e) {
+        $errors_occurred++;
+        $returnValues[$campaign->getId()] =
+          $campaign->getResponse(
+            'TwingleCampaign update failed: ' .
+            $e->getMessage()
+          );
+        Civi::log()->error(
+          E::LONG_NAME .
+          ' could not update TwingleCampaign campaign: ' .
+          $e->getMessage(),
+          $campaign->getResponse()
+        );
+      }
+    }
+  }
+  else {
+    return civicrm_api3_create_error(
+      'Could not get TwingleCampaigns: ' .
+      $campaigns['error_message'],
+      $params
+    );
+  }
+
+  // Return results
+  if ($errors_occurred > 0) {
+    $errorMessage = ($errors_occurred > 1)
+      ? "$errors_occurred synchronisation processes resulted with an error"
+      : "1 synchronisation process resulted with an error";
+    return civicrm_api3_create_error(
+      $errorMessage,
+      $returnValues
+    );
+  }
+  else {
+    return civicrm_api3_create_success(
+      $returnValues,
+      $params,
+      'TwingleCampaign',
+      'Sync'
+    );
+  }
+}
\ No newline at end of file
diff --git a/tests/phpunit/api/v3/TwingleCampaign/SyncTest.php b/tests/phpunit/api/v3/TwingleCampaign/SyncTest.php
new file mode 100644
index 0000000..56541f1
--- /dev/null
+++ b/tests/phpunit/api/v3/TwingleCampaign/SyncTest.php
@@ -0,0 +1,53 @@
+<?php
+
+use Civi\Test\HeadlessInterface;
+use Civi\Test\HookInterface;
+use Civi\Test\TransactionalInterface;
+
+/**
+ * TwingleCampaign.Sync API Test Case
+ * This is a generic test class implemented with PHPUnit.
+ * @group headless
+ */
+class api_v3_TwingleCampaign_SyncTest extends \PHPUnit\Framework\TestCase implements HeadlessInterface, HookInterface, TransactionalInterface {
+  use \Civi\Test\Api3TestTrait;
+
+  /**
+   * Set up for headless tests.
+   *
+   * Civi\Test has many helpers, like install(), uninstall(), sql(), and sqlFile().
+   *
+   * See: https://docs.civicrm.org/dev/en/latest/testing/phpunit/#civitest
+   */
+  public function setUpHeadless() {
+    return \Civi\Test::headless()
+      ->installMe(__DIR__)
+      ->apply();
+  }
+
+  /**
+   * The setup() method is executed before the test is executed (optional).
+   */
+  public function setUp() {
+    parent::setUp();
+  }
+
+  /**
+   * The tearDown() method is executed after the test was executed (optional)
+   * This can be used for cleanup.
+   */
+  public function tearDown() {
+    parent::tearDown();
+  }
+
+  /**
+   * Simple example test case.
+   *
+   * Note how the function name begins with the word "test".
+   */
+  public function testApiExample() {
+    $result = civicrm_api3('TwingleCampaign', 'Sync', array('magicword' => 'sesame'));
+    $this->assertEquals('Twelve', $result['values'][12]['name']);
+  }
+
+}