diff --git a/isp_maintenance/core/api/__init__.py b/isp_maintenance/core/api/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/isp_maintenance/core/api/base.py b/isp_maintenance/core/api/base.py
new file mode 100644
index 0000000..84a0468
--- /dev/null
+++ b/isp_maintenance/core/api/base.py
@@ -0,0 +1,157 @@
+import sys
+import json
+import urllib
+import requests
+
+from settings.api import INPUT_HOSTNAME, INPUT_PORT, HEADERS
+
+
+class BaseAPI(object):
+    def __init__(self, api_url=None, verify_ssl=True):
+        """Announces required parameters"""
+        internal_api_url = f'http://{INPUT_HOSTNAME}:{INPUT_PORT}'
+        self.API_URL = api_url if api_url else internal_api_url
+        self.API_VERSION = 'v3'
+        self.API_DEFINITION = 'api'
+        self.HEADERS = HEADERS
+        self.VERIFY_SSL = verify_ssl
+
+    def _gen_request_url(self, url):
+        return f'{self.API_URL}/{self.API_DEFINITION}/{self.API_VERSION}{url}'
+
+    def call_api(self, url, method='GET', headers={}, data={}):
+        # Open session
+        with requests.Session() as session:
+            try:
+                url = self._gen_request_url(url)
+                headers = self.HEADERS if not headers else headers
+                params_str = urllib.parse.urlencode(data, safe="+'()")
+                if method == 'POST':
+                    api_request = session.post(
+                        url=url,
+                        json=data,
+                        headers=headers,
+                        verify=self.VERIFY_SSL
+                    )
+                if method == 'GET':
+                    url = f'{url}?{params_str}' if params_str else url
+                    api_request = session.get(
+                        url=url,
+                        headers=headers,
+                        verify=self.VERIFY_SSL
+                    )
+            except Exception as error:
+                api_request = {
+                    'result': False,
+                    'error': type(error).__name__
+                }
+                return api_request
+            finally:
+                session.close()
+
+        # Get response
+        try:
+            response = json.loads(api_request.text)
+            if 'error' in response and response['error']:
+                print(response['error'])
+                raise sys.exit()
+            return response
+        except json.decoder.JSONDecodeError:
+            response = {'error': 'Can not parse response'}
+            print(response)
+            raise sys.exit()
+
+
+class BaseAuthAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        """
+        Init class for /auth/v4 requests
+
+        Args:
+            api_url (str, optional): url api host. Defaults to None.
+            If None will use from settings.api.INPUT_HOSTNAME:INPUT_PORT
+
+            verify_ssl (bool, optional): Isn't recommended. Defaults to True.
+            Use only for testing if you don't have root sign SSL cert.
+        """
+        super().__init__(api_url, verify_ssl)
+        self.API_VERSION = 'v4'
+        self.API_DEFINITION = 'auth'
+
+    def get_auth_token(self, email: str, password: str) -> dict:
+        """
+        Get auth token for authentication
+
+        Arg:
+            email (str): user email
+            password (str): user password
+
+        Returns:
+            response (dict): {
+                "confirmed": true,
+                "expires_at": "date time",
+                "id": "int",
+                "token": "str"
+            }
+        """
+        return self.call_api(
+            url='/public/token',
+            method='POST',
+            data={'email': email, 'password': password}
+        )
+
+    def get_auth_key(self, token: str, user, auth_type='Internal') -> dict:
+        """
+        Key authentication
+
+        Args:
+            token (str): auth token
+            user (str or int): user id or email
+            auth_type (str, optional): May be Public for public auth.
+            Defaults to 'Internal'.
+
+        Returns:
+            response (dict): {
+                "id": "int",
+                "key": "str"
+            }
+        """
+        headers = {}
+        if auth_type == 'Public':
+            headers = self.make_auth_header(token)
+        return self.call_api(
+            url=f'/user/{user}/key',
+            method='POST',
+            headers=headers
+        )
+
+    def make_auth_header(self, token: str) -> dict:
+        """
+        Generate dict for auth header
+
+        Args:
+            token (str): auth token
+
+        Returns:
+            dict: {'x-xsrf-token': token} use it for request headers
+        """
+        return {'x-xsrf-token': token}
+
+    def whoami(self, token: str) -> dict:
+        return self.call_api(
+            url='/whoami',
+            method='GET',
+            headers=self.make_auth_header(token)
+        )
+
+
+class BaseIpAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        super().__init__(api_url, verify_ssl)
+        self.API_DEFINITION = 'ip'
+
+
+class BaseDnsProxyAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        super().__init__(api_url, verify_ssl)
+        self.API_DEFINITION = 'dnsproxy'
diff --git a/isp_maintenance/core/api/dci6.py b/isp_maintenance/core/api/dci6.py
new file mode 100644
index 0000000..3bc33d5
--- /dev/null
+++ b/isp_maintenance/core/api/dci6.py
@@ -0,0 +1,51 @@
+from core.api.base import BaseAPI, BaseAuthAPI, BaseDnsProxyAPI, BaseIpAPI
+
+
+class AuthAPI(BaseAuthAPI):
+    pass
+
+
+class BackupAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        super().__init__(api_url, verify_ssl)
+        self.API_VERSION = 'v4'
+        self.API_DEFINITION = 'backup'
+
+
+class DnsProxyAPI(BaseDnsProxyAPI):
+    pass
+
+
+class EserviceAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        super().__init__(api_url, verify_ssl)
+        self.API_DEFINITION = 'eservice'
+
+
+class IsoAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        super().__init__(api_url, verify_ssl)
+        self.API_DEFINITION = 'iso'
+
+
+class IpmiAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        super().__init__(api_url, verify_ssl)
+        self.API_DEFINITION = 'ipmiproxy'
+
+
+class IpAPI(BaseIpAPI):
+    pass
+
+
+class ReportAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        super().__init__(api_url, verify_ssl)
+        self.API_VERSION = 'v4'
+        self.API_DEFINITION = 'report'
+
+
+class UpdaterAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        super().__init__(api_url, verify_ssl)
+        self.API_DEFINITION = 'updater'
diff --git a/isp_maintenance/core/api/vm6.py b/isp_maintenance/core/api/vm6.py
new file mode 100644
index 0000000..dbaa923
--- /dev/null
+++ b/isp_maintenance/core/api/vm6.py
@@ -0,0 +1,19 @@
+from core.api.base import BaseAPI, BaseAuthAPI, BaseDnsProxyAPI, BaseIpAPI
+
+
+class AuthAPI(BaseAuthAPI):
+    pass
+
+
+class DnsProxyAPI(BaseDnsProxyAPI):
+    pass
+
+
+class IpAPI(BaseIpAPI):
+    pass
+
+
+class VmAPI(BaseAPI):
+    def __init__(self, api_url=None, verify_ssl=True):
+        super().__init__(api_url, verify_ssl)
+        self.API_DEFINITION = 'vm'
diff --git a/isp_maintenance/settings/api.py b/isp_maintenance/settings/api.py
new file mode 100644
index 0000000..5e26345
--- /dev/null
+++ b/isp_maintenance/settings/api.py
@@ -0,0 +1,10 @@
+from settings.platform import PLATFORM_TYPE
+
+# Name of nginx container:
+INPUT_HOSTNAME = 'input' if PLATFORM_TYPE == 'vm' else 'dci_input_1'
+
+# Port that nginx container is listening:
+INPUT_PORT = '1500'
+
+# Headers for internal auth:
+HEADERS = {"Internal-Auth": "on", "Accept": "application/json"}