diff --git a/lib/logic/server_api.dart b/lib/logic/server_api.dart
new file mode 100644
index 0000000..c0b24a2
--- /dev/null
+++ b/lib/logic/server_api.dart
@@ -0,0 +1,217 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:dio/adapter.dart';
+import 'package:dio/dio.dart';
+
+import 'package:selfprivacy/models/courier.dart';
+import 'package:selfprivacy/models/order.dart';
+import 'package:selfprivacy/models/item.dart';
+
+class ApiResponse<D> {
+  ApiResponse({
+    required this.statusCode,
+    required this.data,
+    this.errorMessage,
+  });
+  final int statusCode;
+  final String? errorMessage;
+  final D data;
+
+  bool get isSuccess => statusCode >= 200 && statusCode < 300;
+}
+
+class ServerApi {
+  Future<Dio> getClient() async {
+    final Dio dio = Dio(await options);
+    (dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
+        (final HttpClient client) {
+      client.badCertificateCallback =
+          (final X509Certificate cert, final String host, final int port) =>
+      true;
+      return client;
+    };
+
+    dio.interceptors.add(
+      InterceptorsWrapper(
+        onError: (final DioError e, final ErrorInterceptorHandler handler) {
+          print(e.requestOptions.path);
+          print(e.requestOptions.data);
+
+          print(e.message);
+          print(e.response);
+
+          return handler.next(e);
+        },
+      ),
+    );
+    return dio;
+  }
+
+  BaseOptions get options =>
+      BaseOptions(
+        baseUrl: 'http://10.100.0.6:8888/api/v1',
+        connectTimeout: 10000,
+        receiveTimeout: 10000,
+      );
+
+  ValidateStatus? validateStatus;
+
+  void close(final Dio client) {
+    client.close();
+    validateStatus = null;
+  }
+
+  Future<ApiResponse<List<Item>>> getItems() async {
+    final Dio client = await getClient();
+    final Response response = await client.get('/items');
+    final List<Item> items = (response.data as List)
+        .map((final dynamic e) => Item.fromJson(e as Map<String, dynamic>))
+        .toList();
+    return ApiResponse<List<Item>>(
+      statusCode: response.statusCode ?? 0,
+      data: items,
+    );
+  }
+
+  // Create an item
+  Future<ApiResponse<Item>> createItem(final Item item) async {
+    final Dio client = await getClient();
+    final Response response = await client.post('/items', data: item.toJson(),);
+    final Item createdItem = Item.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Item>(
+      statusCode: response.statusCode ?? 0,
+      data: createdItem,
+    );
+  }
+
+  // Update an item
+  Future<ApiResponse<Item>> updateItem(final Item item) async {
+    final Dio client = await getClient();
+    final Response response = await client.put('/items/${item.id}', data: {
+      'title': item.title,
+      'description': item.description,
+      'price': item.price,
+    },);
+    final Item updatedItem = Item.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Item>(
+      statusCode: response.statusCode ?? 0,
+      data: updatedItem,
+    );
+  }
+
+  // Delete an item
+  Future<ApiResponse<Item>> deleteItem(final Item item) async {
+    final Dio client = await getClient();
+    final Response response = await client.delete('/items/${item.id}');
+    final Item deletedItem = Item.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Item>(
+      statusCode: response.statusCode ?? 0,
+      data: deletedItem,
+    );
+  }
+
+  // Get a single item
+  Future<ApiResponse<Item>> getItem(final int id) async {
+    final Dio client = await getClient();
+    final Response response = await client.get('/items/$id');
+    final Item item = Item.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Item>(
+      statusCode: response.statusCode ?? 0,
+      data: item,
+    );
+  }
+
+  // Get all couriers
+  Future<ApiResponse<List<Courier>>> getCouriers() async {
+    final Dio client = await getClient();
+    final Response response = await client.get('/couriers');
+    final List<Courier> couriers = (response.data as List)
+        .map((final dynamic e) => Courier.fromJson(e as Map<String, dynamic>))
+        .toList();
+    return ApiResponse<List<Courier>>(
+      statusCode: response.statusCode ?? 0,
+      data: couriers,
+    );
+  }
+
+  // Add a courier
+  Future<ApiResponse<Courier>> addCourier(final Courier courier) async {
+    final Dio client = await getClient();
+    final Response response = await client.post('/couriers', data: courier.toJson(),);
+    final Courier createdCourier = Courier.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Courier>(
+      statusCode: response.statusCode ?? 0,
+      data: createdCourier,
+    );
+  }
+
+  // Update a courier
+  Future<ApiResponse<Courier>> updateCourier(final Courier courier) async {
+    final Dio client = await getClient();
+    final Response response = await client.put('/couriers/${courier.id}', data: courier.toJson(),);
+    final Courier updatedCourier = Courier.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Courier>(
+      statusCode: response.statusCode ?? 0,
+      data: updatedCourier,
+    );
+  }
+
+  // Get a single courier
+  Future<ApiResponse<Courier>> getCourier(final int id) async {
+    final Dio client = await getClient();
+    final Response response = await client.get('/couriers/$id');
+    final Courier courier = Courier.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Courier>(
+      statusCode: response.statusCode ?? 0,
+      data: courier,
+    );
+  }
+
+  // Get all orders
+  Future<ApiResponse<List<Order>>> getOrders() async {
+    final Dio client = await getClient();
+    final Response response = await client.get('/orders');
+    final List<Order> orders = (response.data as List)
+        .map((final dynamic e) => Order.fromJson(e as Map<String, dynamic>))
+        .toList();
+    return ApiResponse<List<Order>>(
+      statusCode: response.statusCode ?? 0,
+      data: orders,
+    );
+  }
+
+  // Get a single order
+  Future<ApiResponse<Order>> getOrder(final int id) async {
+    final Dio client = await getClient();
+    final Response response = await client.get('/orders/$id');
+    final Order order = Order.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Order>(
+      statusCode: response.statusCode ?? 0,
+      data: order,
+    );
+  }
+
+  // Create an order
+  Future<ApiResponse<Order>> createOrder(final Order order) async {
+    final Dio client = await getClient();
+    final Response response = await client.post('/orders', data: order.toJsonAsNew());
+    final Order createdOrder = Order.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Order>(
+      statusCode: response.statusCode ?? 0,
+      data: createdOrder,
+    );
+  }
+
+  // Update an order
+  Future<ApiResponse<Order>> updateOrder(final Order order) async {
+    final Dio client = await getClient();
+    final Response response = await client.put('/orders/${order.id}', data: order.toJson());
+    final Order updatedOrder = Order.fromJson(response.data as Map<String, dynamic>);
+    return ApiResponse<Order>(
+      statusCode: response.statusCode ?? 0,
+      data: updatedOrder,
+    );
+  }
+}
diff --git a/lib/models/courier.dart b/lib/models/courier.dart
index 92ceead..ebd9e9c 100644
--- a/lib/models/courier.dart
+++ b/lib/models/courier.dart
@@ -1,4 +1,13 @@
-class Courier {
+import 'package:equatable/equatable.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+part 'courier.g.dart';
+
+@JsonSerializable()
+class Courier extends Equatable {
+  factory Courier.fromJson(final Map<String, dynamic> json) =>
+      _$CourierFromJson(json);
+
   Courier({
     required this.name,
     required this.surname,
@@ -10,4 +19,15 @@ class Courier {
   final String surname;
   final String phone;
   final int id;
+
+  // tojson
+  Map<String, dynamic> toJson() => _$CourierToJson(this);
+
+  @override
+  List<Object?> get props => [
+    name,
+    surname,
+    phone,
+    id,
+  ];
 }
diff --git a/lib/models/courier.g.dart b/lib/models/courier.g.dart
new file mode 100644
index 0000000..70699ba
--- /dev/null
+++ b/lib/models/courier.g.dart
@@ -0,0 +1,21 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'courier.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+Courier _$CourierFromJson(Map<String, dynamic> json) => Courier(
+      name: json['name'] as String,
+      surname: json['surname'] as String,
+      id: json['id'] as int,
+      phone: json['phone'] as String,
+    );
+
+Map<String, dynamic> _$CourierToJson(Courier instance) => <String, dynamic>{
+      'name': instance.name,
+      'surname': instance.surname,
+      'phone': instance.phone,
+      'id': instance.id,
+    };
diff --git a/lib/models/item.dart b/lib/models/item.dart
index 50e47a3..c0ea7ff 100644
--- a/lib/models/item.dart
+++ b/lib/models/item.dart
@@ -1,13 +1,35 @@
-class Item {
+import 'package:equatable/equatable.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+part 'item.g.dart';
+
+@JsonSerializable()
+class Item extends Equatable {
+  factory Item.fromJson(final Map<String, dynamic> json) =>
+      _$ItemFromJson(json);
   Item({
     required this.title,
-    required this.description,
     required this.id,
-    required this.price,
+    this.description,
+    this.price,
+    this.quantity,
   });
 
   final String title;
-  final String description;
-  final int price;
+  final String? description;
+  final int? price;
   final int id;
+  final int? quantity;
+
+  // tojson
+  Map<String, dynamic> toJson() => _$ItemToJson(this);
+
+  @override
+  List<Object?> get props => [
+        title,
+        description,
+        price,
+        id,
+        quantity,
+      ];
 }
diff --git a/lib/models/item.g.dart b/lib/models/item.g.dart
new file mode 100644
index 0000000..9c0ee7a
--- /dev/null
+++ b/lib/models/item.g.dart
@@ -0,0 +1,23 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'item.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+Item _$ItemFromJson(Map<String, dynamic> json) => Item(
+      title: json['title'] as String,
+      id: json['id'] as int,
+      description: json['description'] as String?,
+      price: json['price'] as int?,
+      quantity: json['quantity'] as int?,
+    );
+
+Map<String, dynamic> _$ItemToJson(Item instance) => <String, dynamic>{
+      'title': instance.title,
+      'description': instance.description,
+      'price': instance.price,
+      'id': instance.id,
+      'quantity': instance.quantity,
+    };
diff --git a/lib/models/order.dart b/lib/models/order.dart
index 5842c81..b443809 100644
--- a/lib/models/order.dart
+++ b/lib/models/order.dart
@@ -1,6 +1,13 @@
+import 'package:equatable/equatable.dart';
+import 'package:json_annotation/json_annotation.dart';
 import 'package:selfprivacy/models/item.dart';
 
+part 'order.g.dart';
+
+@JsonSerializable()
 class Order {
+  factory Order.fromJson(final Map<String, dynamic> json) =>
+      _$OrderFromJson(json);
   Order({
     required this.title,
     required this.description,
@@ -17,9 +24,13 @@ class Order {
 
   final String title;
   final String description;
+  @JsonKey(name: 'customer_name')
   final String customerName;
+  @JsonKey(name: 'customer_phone')
   final String customerPhone;
+  @JsonKey(name: 'order_date')
   final String orderDate;
+  @JsonKey(name: 'delivery_date')
   final String deliveryDate;
   final String address;
   final String status;
@@ -27,4 +38,27 @@ class Order {
   final int courierId;
 
   final List<Item> items;
+
+  // tojson
+  Map<String, dynamic> toJson() => _$OrderToJson(this);
+  Map<String, dynamic> toJsonAsNew() {
+    final Map<String, dynamic> data = _$OrderToJson(this);
+    // To "order_in" goes everything except items
+    data['order_in'] = {
+      'title': data['title'],
+      'description': data['description'],
+      'customer_name': data['customer_name'],
+      'customer_phone': data['customer_phone'],
+      'order_date': data['order_date'],
+      'delivery_date': data['delivery_date'],
+      'address': data['address'],
+      'status': data['status'],
+      'courier_id': data['courier_id'],
+    };
+    // To "order_items" goes only items
+    data['order_items'] = data['items'];
+    // Remove items from data
+    data.remove('items');
+    return data;
+  }
 }
diff --git a/lib/models/order.g.dart b/lib/models/order.g.dart
new file mode 100644
index 0000000..cf3db0e
--- /dev/null
+++ b/lib/models/order.g.dart
@@ -0,0 +1,37 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'order.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+Order _$OrderFromJson(Map<String, dynamic> json) => Order(
+      title: json['title'] as String,
+      description: json['description'] as String,
+      id: json['id'] as int,
+      customerName: json['customer_name'] as String,
+      customerPhone: json['customer_phone'] as String,
+      orderDate: json['order_date'] as String,
+      deliveryDate: json['delivery_date'] as String,
+      address: json['address'] as String,
+      status: json['status'] as String,
+      courierId: json['courierId'] as int,
+      items: (json['items'] as List<dynamic>)
+          .map((e) => Item.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    );
+
+Map<String, dynamic> _$OrderToJson(Order instance) => <String, dynamic>{
+      'title': instance.title,
+      'description': instance.description,
+      'customer_name': instance.customerName,
+      'customer_phone': instance.customerPhone,
+      'order_date': instance.orderDate,
+      'delivery_date': instance.deliveryDate,
+      'address': instance.address,
+      'status': instance.status,
+      'id': instance.id,
+      'courierId': instance.courierId,
+      'items': instance.items,
+    };