diff --git a/packages/dynamite/lib/src/openapi_builder.dart b/packages/dynamite/lib/src/openapi_builder.dart
index a6088b06..60674678 100644
--- a/packages/dynamite/lib/src/openapi_builder.dart
+++ b/packages/dynamite/lib/src/openapi_builder.dart
@@ -1299,8 +1299,24 @@ TypeResult resolveType(
                       );
                   },
                 ),
+                Constructor(
+                  (final b) {
+                    b
+                      ..factory = true
+                      ..lambda = true
+                      ..name = 'fromJsonString'
+                      ..requiredParameters.add(
+                        Parameter(
+                          (final b) => b
+                            ..name = 'data'
+                            ..type = refer('String'),
+                        ),
+                      )
+                      ..body = Code('$identifier.fromJson(json.decode(data))');
+                  },
+                ),
               ])
-              ..methods.add(
+              ..methods.addAll([
                 Method(
                   (final b) => b
                     ..name = 'toJson'
@@ -1308,7 +1324,22 @@ TypeResult resolveType(
                     ..lambda = true
                     ..body = const Code('_data'),
                 ),
-              );
+                Method(
+                  (final b) => b
+                    ..name = 'toJsonString'
+                    ..returns = refer('String')
+                    ..lambda = true
+                    ..static = true
+                    ..requiredParameters.add(
+                      Parameter(
+                        (final b) => b
+                          ..name = 'data'
+                          ..type = refer('dynamic'),
+                      ),
+                    )
+                    ..body = const Code('json.encode(data)'),
+                ),
+              ]);
           },
         ),
       );
diff --git a/packages/nextcloud/lib/src/nextcloud.openapi.dart b/packages/nextcloud/lib/src/nextcloud.openapi.dart
index 44a267c5..8ebf5bfc 100644
--- a/packages/nextcloud/lib/src/nextcloud.openapi.dart
+++ b/packages/nextcloud/lib/src/nextcloud.openapi.dart
@@ -2829,6 +2829,9 @@ class CoreNavigationApps_Ocs_Data_Order {
     );
   }
 
+  factory CoreNavigationApps_Ocs_Data_Order.fromJsonString(String data) =>
+      CoreNavigationApps_Ocs_Data_Order.fromJson(json.decode(data));
+
   final dynamic _data;
 
   final int? $int;
@@ -2838,6 +2841,8 @@ class CoreNavigationApps_Ocs_Data_Order {
   // coverage:ignore-start
   dynamic toJson() => _data;
   // coverage:ignore-end
+
+  static String toJsonString(dynamic data) => json.encode(data);
 }
 
 @JsonSerializable()
@@ -3348,6 +3353,9 @@ class NotificationsNotification_SubjectRichParameters {
     );
   }
 
+  factory NotificationsNotification_SubjectRichParameters.fromJsonString(String data) =>
+      NotificationsNotification_SubjectRichParameters.fromJson(json.decode(data));
+
   final dynamic _data;
 
   final Map<String, dynamic>? mapStringDynamic;
@@ -3355,6 +3363,8 @@ class NotificationsNotification_SubjectRichParameters {
   // coverage:ignore-start
   dynamic toJson() => _data;
   // coverage:ignore-end
+
+  static String toJsonString(dynamic data) => json.encode(data);
 }
 
 class NotificationsNotification_MessageRichParameters {
@@ -3374,6 +3384,9 @@ class NotificationsNotification_MessageRichParameters {
     );
   }
 
+  factory NotificationsNotification_MessageRichParameters.fromJsonString(String data) =>
+      NotificationsNotification_MessageRichParameters.fromJson(json.decode(data));
+
   final dynamic _data;
 
   final Map<String, dynamic>? mapStringDynamic;
@@ -3381,6 +3394,8 @@ class NotificationsNotification_MessageRichParameters {
   // coverage:ignore-start
   dynamic toJson() => _data;
   // coverage:ignore-end
+
+  static String toJsonString(dynamic data) => json.encode(data);
 }
 
 @JsonSerializable()
@@ -3976,6 +3991,8 @@ class UserStatusClearAt_Time {
     );
   }
 
+  factory UserStatusClearAt_Time.fromJsonString(String data) => UserStatusClearAt_Time.fromJson(json.decode(data));
+
   final dynamic _data;
 
   final UserStatusClearAt_Time0? userStatusClearAtTime0;
@@ -3986,6 +4003,8 @@ class UserStatusClearAt_Time {
   // coverage:ignore-start
   dynamic toJson() => _data;
   // coverage:ignore-end
+
+  static String toJsonString(dynamic data) => json.encode(data);
 }
 
 @JsonSerializable()
@@ -4034,6 +4053,9 @@ class UserStatusPublicUserStatus_ClearAt {
     );
   }
 
+  factory UserStatusPublicUserStatus_ClearAt.fromJsonString(String data) =>
+      UserStatusPublicUserStatus_ClearAt.fromJson(json.decode(data));
+
   final dynamic _data;
 
   final UserStatusClearAt? userStatusClearAt;
@@ -4044,6 +4066,8 @@ class UserStatusPublicUserStatus_ClearAt {
   // coverage:ignore-start
   dynamic toJson() => _data;
   // coverage:ignore-end
+
+  static String toJsonString(dynamic data) => json.encode(data);
 }
 
 enum UserStatusType {
@@ -4166,6 +4190,9 @@ class UserStatusFindStatus_Ocs_Data {
     );
   }
 
+  factory UserStatusFindStatus_Ocs_Data.fromJsonString(String data) =>
+      UserStatusFindStatus_Ocs_Data.fromJson(json.decode(data));
+
   final dynamic _data;
 
   final UserStatusPublicUserStatus? userStatusPublicUserStatus;
@@ -4173,6 +4200,8 @@ class UserStatusFindStatus_Ocs_Data {
   // coverage:ignore-start
   dynamic toJson() => _data;
   // coverage:ignore-end
+
+  static String toJsonString(dynamic data) => json.encode(data);
 }
 
 @JsonSerializable()
@@ -4239,6 +4268,8 @@ class UserStatus_ClearAt {
     );
   }
 
+  factory UserStatus_ClearAt.fromJsonString(String data) => UserStatus_ClearAt.fromJson(json.decode(data));
+
   final dynamic _data;
 
   final UserStatusClearAt? userStatusClearAt;
@@ -4249,6 +4280,8 @@ class UserStatus_ClearAt {
   // coverage:ignore-start
   dynamic toJson() => _data;
   // coverage:ignore-end
+
+  static String toJsonString(dynamic data) => json.encode(data);
 }
 
 @JsonSerializable()
@@ -4308,6 +4341,9 @@ class UserStatusGetUserStatus_Ocs_Data {
     );
   }
 
+  factory UserStatusGetUserStatus_Ocs_Data.fromJsonString(String data) =>
+      UserStatusGetUserStatus_Ocs_Data.fromJson(json.decode(data));
+
   final dynamic _data;
 
   final UserStatus? userStatus;
@@ -4315,6 +4351,8 @@ class UserStatusGetUserStatus_Ocs_Data {
   // coverage:ignore-start
   dynamic toJson() => _data;
   // coverage:ignore-end
+
+  static String toJsonString(dynamic data) => json.encode(data);
 }
 
 @JsonSerializable()
@@ -4382,6 +4420,9 @@ class UserStatusPredefinedStatus_ClearAt {
     );
   }
 
+  factory UserStatusPredefinedStatus_ClearAt.fromJsonString(String data) =>
+      UserStatusPredefinedStatus_ClearAt.fromJson(json.decode(data));
+
   final dynamic _data;
 
   final UserStatusClearAt? userStatusClearAt;
@@ -4392,6 +4433,8 @@ class UserStatusPredefinedStatus_ClearAt {
   // coverage:ignore-start
   dynamic toJson() => _data;
   // coverage:ignore-end
+
+  static String toJsonString(dynamic data) => json.encode(data);
 }
 
 @JsonSerializable()