diff --git a/gschliefgraben_glasfaser/main.py b/gschliefgraben_glasfaser/main.py
index 4dc35d7..0a7619c 100644
--- a/gschliefgraben_glasfaser/main.py
+++ b/gschliefgraben_glasfaser/main.py
@@ -13,6 +13,8 @@ import os
 from sqlalchemy.orm import session
 from models import ObservationSchema, Person, PersonSchema, Observation
 from db.pg_models import create_pg_session
+from myApi import myAPI
+import requests
 #from models import Person, PersonSchema
 # response = requests.get('https://api.com/')
 # print(response)  # shows the response's HTTP status code
@@ -26,23 +28,37 @@ def main():
     print(db_user)
 
     pg_session: session = create_pg_session()
-    # pg_person: Person = pg_session.query(Person).first()
-    observation: Observation = pg_session.query(Observation).first()
-    print (observation)
+    pg_person: Person = pg_session.query(Person).first()
+    #observation: Observation = pg_session.query(Observation).first()
+    print(pg_person)
 
     # serialize db data to json
-    # person_schema = PersonSchema()
-    # dump_data = person_schema.dump(pg_person)
-    # print(dump_data)
-    # serialize db data to json
-    observation_schema = ObservationSchema()
-    dump_data = observation_schema.dump(observation)
+    person_schema = PersonSchema()
+    dump_data = person_schema.dump(pg_person)
     print(dump_data)
+    # serialize db data to json
+    # observation_schema = ObservationSchema()
+    # dump_data = observation_schema.dump(observation)
+    # print(dump_data)
 
     # # deserialize
     # load_data: Person = person_schema.load(dump_data)
     # print(load_data)
 
+    # request ortmann api
+    # token = 'eyJraWQiOiJlakFmX1MwMTBMU3doS0Zod05wZDQtQkZPYTM4cDRYRE1zU1hFa0lrRlhFIiwiYWxnIjoiUlMyNTYifQ.eyJ2ZXIiOjEsImp0aSI6IkFULkZRUHNCOWh5Snd6eEM5d3ZWelRvaTNpZVlMWlJiT3U4YzFCbWJWRGM1SFkiLCJpc3MiOiJodHRwczovL2Rldi01MjUwMDA2Lm9rdGEuY29tL29hdXRoMi9kZWZhdWx0IiwiYXVkIjoiYXBpOi8vZGVmYXVsdCIsImlhdCI6MTY0NTc4Mjg0NSwiZXhwIjoxNjQ1Nzg2NDQ1LCJjaWQiOiIwb2EyOWhzdGZ3RnFya1BrUDVkNyIsInNjcCI6WyJnc2NobGllZmdyYWJlbiJdLCJzdWIiOiIwb2EyOWhzdGZ3RnFya1BrUDVkNyJ9.c-pTs-3VJMnFO2SOqxOvsABAloprUmOjk6SO9J71NrgLj7claKZOMLZxRyUeSBLWCJFFNI3A6xMd4twEexjJdUR8UEM4U50srxr2p_enaMm1_jZTSt_76u6H05kwV-A2AOQPkx-Fxxaj_PDjT7w43Zlg6SUEoT11uGKR6KtxVYbclGtWgOR7wvH4NZav-P_EDjHwHxbk2kQSf7tBU1JbWl74Xt58gzv1t8VNtLYLICabRsuTNQUNiO7Y1rtUEav4ugf7WZMIY1cP_4rCupZrAFbxrnyprAuXA2x01Z9hbFmiaK0QDlrwHcCHL_1fKvj9uIbO5JeI1x81X6g7eAxQdA'
+    # response = requests.get('https://api.dgnss-sensors.com/gschliefgraben?sensors=("inclino1_14")',
+    #                         headers={
+    #                             'Authorization': 'Bearer' + token,
+    #                             'cache-control': 'no-cache',
+    #                             'Content-Type': 'application/x-www-form-urlencoded',
+    #                             'accept': 'application/json'
+    #                         },
+    #                         data='grant_type=client_credentials&scope=gschliefgraben')
+    # print(response)
+    token_api = os.environ.get("TOKEN_API")
+    test = myAPI(token_api)
+
     # create(dump_data)
 
 
@@ -61,15 +77,15 @@ def create(person_json: PersonSchema):
     # existing_person = Person.query \
     #     .filter(Person.login == login) \
     #     .one_or_none()
-    existing_person: bool = ( \
-        db_session.query(Person) \
+    existing_person: bool = (
+        db_session.query(Person)
         .filter(Person.login == login)
         .one_or_none()
     )
 
     # Can we insert this person?
     if existing_person is None:
-         # Create a person instance using the schema and the passed in person
+        # Create a person instance using the schema and the passed in person
         schema = PersonSchema()
         # deserialize to object
         new_person: Person = schema.load(person_json)
diff --git a/gschliefgraben_glasfaser/myApi.py b/gschliefgraben_glasfaser/myApi.py
new file mode 100644
index 0000000..6ca1123
--- /dev/null
+++ b/gschliefgraben_glasfaser/myApi.py
@@ -0,0 +1,87 @@
+'''
+Python version: 3.7
+https://www.mybluelinux.com/python-how-to-refresh-an-jwt-access-token-using-decorators/
+https://stackoverflow.com/questions/37094419/python-requests-retry-request-after-re-authentication
+'''
+
+import requests
+import time, os
+
+
+class myAPI():
+    host = None
+    key = None
+    secret = None
+    access_token = None
+    access_token_expiration = None
+
+    def __init__(self, host):
+        # the function that is executed when
+        # an instance of the class is created
+        self.host = host
+        # self.key = key
+        # self.secret = secret
+
+        try:
+            self._session = requests.Session()  # Session for tokens
+            self.access_token = self.getAccessToken()
+            if self.access_token is None:
+                raise Exception("Request for access token failed.")
+
+            self.session = requests.Session()  # Authenticated session
+            self.session.auth = self.auth
+            self.session.hooks['response'].append(self.reauth)
+        except Exception as e:
+            print(e)
+        else:
+            self.access_token_expiration = time.time() + 3600
+
+    def reauth(self, res, *args, **kwargs):
+        """Hook to re-authenticate whenever authentication expires."""
+        if res.status_code == requests.codes.unauthorized:
+            if res.request.headers.get('REATTEMPT'):
+                res.raise_for_status()
+            self.refresh_auth()
+            req = res.request
+            req.headers['REATTEMPT'] = 1
+            req = self.session.auth(req)
+            res = self.session.send(req)
+            return res
+
+    def refresh_auth(self):
+        """Use the refresh token to get a new access token."""
+        res = self._session.post(self.abs_url("api/token/refresh/"), data={"refresh": self.refresh})
+        if res.status_code == 200:
+            self.access_token = res.json()['access_token']
+        else:
+            # Token expired -> re-authenticate
+            self.reauth()
+
+    def authenticate(self):
+        # the function that is
+        # used to request the JWT
+        try:
+            # build the JWT and store
+            # in the variable `token_body`
+            refresh_token =  os.environ.get("REFRESH_TOKEN")
+
+            # request an access token
+            request = requests.post(self.host,
+                                    headers={
+                                        'Authorization': 'Basic ' + refresh_token,
+                                        'cache-control': 'no-cache',
+                                        'Content-Type': 'application/x-www-form-urlencoded',
+                                        'accept': 'application/json'
+                                    },
+                                    data='grant_type=client_credentials&scope=gschliefgraben')
+
+            # optional: raise exception for status code
+            request.raise_for_status()
+        except Exception as e:
+            print(e)
+            return None
+        else:
+            # assuming the response's structure is
+            # {"access_token": ""}
+            data = request.json()
+            return data['access_token']