diff --git a/vue-apps-py/README.MD b/vue-apps-py/README.MD
index a5cc92b..19ffda0 100644
--- a/vue-apps-py/README.MD
+++ b/vue-apps-py/README.MD
@@ -8,18 +8,26 @@ You will probably need to install ***uvicorn*** to launch a server built with Fa
 python3 -m pip install "uvicorn[standard]"
 ```
 
-After importing an app such as
-
-main.py:
+After importing an app such as `main.py`:
 
 ```python
-from vue_apps_py.vue_app_server import VueApp
+from src.vue_apps_py.security import SecurityHelper
+from src.vue_apps_py.server import VueApp
+from src.vue_apps_py.client import ClientAPI
+from src.vue_apps_py.server_utils.models import Intent
 
-app = VueApp()
+# Initialize API
+api = ClientAPI(client_id='vue-app-0', client_secret='abccf12389efab222')
+
+# Prepare Security
+key_holder = SecurityHelper(public_key='abbcbbbcaksjdhf/skdjhfnnsn/sjdkfjj21234=')
+
+# Get Vue Application Server
+vue_app = VueApp(client_api=api, security_helper=key_holder, intents=[Intent.INLINE_QUERY], debug=True)
 ```
 
 You can launch web server:
 
 ```shell
-uvicorn main:app --reload
+uvicorn test:vue_app --reload
 ```
diff --git a/vue-apps-py/pyproject.toml b/vue-apps-py/pyproject.toml
index 43470da..0b38fea 100644
--- a/vue-apps-py/pyproject.toml
+++ b/vue-apps-py/pyproject.toml
@@ -5,10 +5,10 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "vue_apps_py"
 version = "0.0.1"
-authors = [{ name = "ArbinaHQ", email = "hey@arbina.com" }]
+authors = [{ name = "Arbina", email = "havlong@arbina.com" }]
 description = "Python library for building Vue Apps"
 readme = "README.MD"
-requires-python = ">=3.9"
+requires-python = ">=3.7"
 classifiers = ["Programming Language :: Python :: 3", "Operating System :: OS Independent"]
 
 [project.urls]
diff --git a/vue-apps-py/src/vue_apps_py/client.py b/vue-apps-py/src/vue_apps_py/client.py
new file mode 100644
index 0000000..ff16f01
--- /dev/null
+++ b/vue-apps-py/src/vue_apps_py/client.py
@@ -0,0 +1,10 @@
+class ClientAPI:
+    client_id: str
+    client_secret: str
+
+    def __init__(self, client_id: str, client_secret: str):
+        self.client_id = client_id
+        self.client_secret = client_secret
+
+    def get_token(self) -> str:
+        return self.client_secret
diff --git a/vue-apps-py/src/vue_apps_py/security.py b/vue-apps-py/src/vue_apps_py/security.py
new file mode 100644
index 0000000..652f394
--- /dev/null
+++ b/vue-apps-py/src/vue_apps_py/security.py
@@ -0,0 +1,15 @@
+from ed25519.keys import VerifyingKey
+
+
+class SecurityHelper:
+    public_key: VerifyingKey
+
+    def __init__(self, public_key: str):
+        self.public_key = VerifyingKey(public_key.encode(), encoding='base64')
+
+    def check(self, http: bytes, signature: bytes) -> bool:
+        try:
+            self.public_key.verify(signature, http, encoding='base64')
+            return True
+        except AssertionError:
+            return False
diff --git a/vue-apps-py/src/vue_apps_py/server.py b/vue-apps-py/src/vue_apps_py/server.py
new file mode 100644
index 0000000..ed9aedb
--- /dev/null
+++ b/vue-apps-py/src/vue_apps_py/server.py
@@ -0,0 +1,38 @@
+from typing import List
+
+from fastapi import FastAPI, Request, HTTPException
+
+from client import ClientAPI
+from security import SecurityHelper
+from server_utils.models import PongModel, Intent
+
+
+def VueApp(client_api: ClientAPI, security_helper: SecurityHelper, intents: List[Intent], debug: bool = False):
+    app = FastAPI(debug=debug, title='VueApp', description='Vue Application Server', version='0.0.1')
+
+    async def check_request(request: Request) -> bool:
+        if 'X-Signature-Ed25519' not in request.headers or 'X-Signature-Timestamp' not in request.headers:
+            return False
+        body_to_verify = await request.body()
+        timestamp = request.headers['X-Signature-Timestamp'].encode('utf-8')
+        signature = request.headers['X-Signature-Ed25519'].encode('utf-8')
+        return security_helper.check(timestamp + body_to_verify, signature)
+
+    @app.post(path='/ping', response_model=PongModel)
+    async def handle_ping(request: Request) -> PongModel:
+        ok = await check_request(request)
+        if not ok:
+            raise HTTPException(status_code=401, detail='Verification of signature failed')
+
+        return PongModel(message='pong', token=client_api.get_token())
+
+    if Intent.INLINE_QUERY in intents:
+        @app.post(path='/auto', response_model=PongModel)
+        async def handle_autocomplete(request: Request) -> PongModel:
+            ok = await check_request(request)
+            if not ok:
+                raise HTTPException(status_code=401, detail='Verification of signature failed')
+
+            return PongModel(message='pong', token=client_api.get_token())
+
+    return app
diff --git a/vue-apps-py/src/vue_apps_py/vue_app_client.py b/vue-apps-py/src/vue_apps_py/server_utils/__init__.py
similarity index 100%
rename from vue-apps-py/src/vue_apps_py/vue_app_client.py
rename to vue-apps-py/src/vue_apps_py/server_utils/__init__.py
diff --git a/vue-apps-py/src/vue_apps_py/server_utils/models.py b/vue-apps-py/src/vue_apps_py/server_utils/models.py
new file mode 100644
index 0000000..efb4efc
--- /dev/null
+++ b/vue-apps-py/src/vue_apps_py/server_utils/models.py
@@ -0,0 +1,20 @@
+from enum import Enum, auto
+from typing import Optional
+
+from pydantic import BaseModel, Field
+
+
+class PingModel(BaseModel):
+    nickname: str
+
+
+class PongModel(BaseModel):
+    message: str = Field(default='ping', title='Message', description='Message answered on pings')
+    token: Optional[str] = Field(default=None, title='Token', description='Token for API to check')
+
+
+class Intent(Enum):
+    PAGE_APP = auto()
+    PAGE_MENTIONS = auto()
+    INLINE_QUERY = auto()
+    INTERACTIONS = auto()
diff --git a/vue-apps-py/src/vue_apps_py/vue_app_security.py b/vue-apps-py/src/vue_apps_py/vue_app_security.py
deleted file mode 100644
index e69de29..0000000
diff --git a/vue-apps-py/src/vue_apps_py/vue_app_server.py b/vue-apps-py/src/vue_apps_py/vue_app_server.py
deleted file mode 100644
index e69de29..0000000