diff --git a/api.php b/api.php
index 0854b00..63a9a42 100644
--- a/api.php
+++ b/api.php
@@ -1068,7 +1068,7 @@ switch($request[0]) {
 				switch($request[2]){
 					/*	APIDOC: project/mentor/add
 						description(add a project mentor to the current project)
-						post(mentor array optional)
+						post(mentors array optional)
 						return(mentor array (if none passed in, otherwise nothing))
 					*/
 					case 'add':
@@ -1078,18 +1078,23 @@ switch($request[0]) {
 							break;
 						}
 
-						$result = addMentor($_SESSION['registration_id']);
-						if($_POST['mentor']) {
-							$md=json_decode($_POST['mentor']);
-							$md['id']=$result['id'];
-							$result = saveMentorData($md);
-							if($result == 'ok'){
+						if($_POST['mentors']) {
+							$mentors = json_decode($_POST['mentors']);
+							$errors = array();
+							foreach($mentors as $md){
+								$result = addMentor($_SESSION['registration_id']);
+								$md['id']=$result['id'];
+								$result = saveMentorData($md);
+								if($result != 'ok') $errors[] = $result;
+							}
+							if(!count($errors)){
 								$ret['status'] = 'ok';
 							}else{
 								$ret['status'] = 'error';
-								$ret['error'] = $result;
+								$ret['error'] = '(' . implode('), (', $errors) . ')';
 							}
 						} else {
+							$result = addMentor($_SESSION['registration_id']);
 							if(is_array($result)){
 								$ret['status'] = 'ok';
 								$ret['mentor'] = $result;
@@ -1101,21 +1106,30 @@ switch($request[0]) {
 					break;
 
 					/*	APIDOC: project/mentor/edit
-						post(mentor array)
-						description(edit a project mentor)
+						post(mentors array)
+						description(edit a list of project mentors)
 					*/
 					case 'edit':
-						if(!array_key_exists('mentor', $_POST)){
+						if(!array_key_exists('mentors', $_POST)){
 							$ret['status'] = "error";
-							$ret['error'] = "mentor array parameter required";
+							$ret['error'] = "mentors array parameter required";
 							break;
 						}
-						$result = saveMentorData(json_decode($_POST['mentor']));
-						if($result == 'ok'){
+						$errors = array();
+						$mentorList = json_decode($_POST['mentors']);
+						foreach($mentorList as $mentor){
+							if(!is_array($mentor)){
+								$errors[] = "Invalid mentor data: $mentor";
+								continue;
+							}
+							$result = saveMentorData($mentor);
+							if($result != 'ok') $errors[] = $result;
+						}
+						if(!count($errors)){
 							$ret['status'] = 'ok';
 						}else{
 							$ret['status'] = 'error';
-							$ret['error'] = $result;
+							$ret['error'] = '(' . implode('), (', $errors) . ')';
 						}
 					break;