diff --git a/src/api_insee/api.py b/src/api_insee/api.py
index 163a833..f8ab58b 100644
--- a/src/api_insee/api.py
+++ b/src/api_insee/api.py
@@ -6,15 +6,12 @@
 
 class ApiInsee():
 
-    def __init__(self, key, secret, format='json', noauth=False):
+    def __init__(self, token: str, format='json', noauth=False):
 
         if noauth:
             self.auth = MockAuth()
         else:
-            self.auth = AuthService(
-                key = key,
-                secret = secret
-            )
+            self.auth = AuthService(token=token)
         self.format = format
 
         self.use('siren', RequestEntrepriseServiceSiren)
diff --git a/src/api_insee/conf.py b/src/api_insee/conf.py
index fb70956..ad0b5f7 100644
--- a/src/api_insee/conf.py
+++ b/src/api_insee/conf.py
@@ -2,9 +2,8 @@
 API_VERSION = {
     "url" : 'https://api.insee.fr',
 
-    "path_token" : '/token',
-    "path_siren" : '/entreprises/sirene/V3.11/siren',
-    "path_siret" : '/entreprises/sirene/V3.11/siret',
-    "path_liens_succession" : '/entreprises/sirene/V3.11/siret/liensSuccession',
+    "path_siren" : '/api-sirene/3.11/siren',
+    "path_siret" : '/api-sirene/3.11/siret',
+    "path_liens_succession" : '/api-sirene/3.11/siret/liensSuccession',
 
 }
diff --git a/src/api_insee/exeptions/auth_exeption.py b/src/api_insee/exeptions/auth_exeption.py
index ff4ffb3..1904849 100644
--- a/src/api_insee/exeptions/auth_exeption.py
+++ b/src/api_insee/exeptions/auth_exeption.py
@@ -2,24 +2,18 @@
 
 class AuthExeption(Exception):
 
-    credential = None
+    token: str = None
 
-    def __init__(self, credential):
-        self.credential = credential
+    def __init__(self, token):
+        self.token = token
 
     def invalidkeyAndSecret(self):
-        self.message = "Invalid consumer key or secret. key : %s secret : %s" % (
-            self.credential.key,
-            self.credential.secret
-        )
+        self.message = "Invalid consumer key or secret. token : %s" % self.token
 
         return self
 
     def unauthorized(self, reason=False):
-        self.message = "Api connection unauthorized. key : %s secret : %s" % (
-            self.credential.key,
-            self.credential.secret
-        )
+        self.message = "Api connection unauthorized. token : %s" % self.token
 
         if reason:
             self.message += "\n %s" % (reason)
diff --git a/src/api_insee/request/request.py b/src/api_insee/request/request.py
index ea8fa84..cea6d45 100644
--- a/src/api_insee/request/request.py
+++ b/src/api_insee/request/request.py
@@ -154,7 +154,7 @@ def data(self):
     def header(self):
         return {
             'Accept' : self._accept_format,
-            'Authorization' : 'Bearer %s' % (self.token.access_token)
+            'X-INSEE-Api-Key-Integration' : self.token,
         }
 
     @property
@@ -177,7 +177,7 @@ def catchHTTPError(self, error):
             raise RequestExeption(self).badRequest()
 
         elif error.code == 401:
-            raise AuthExeption(self.credentials).unauthorized(error.reason)
+            raise AuthExeption(self.token).unauthorized(error.reason)
 
         else:
             raise error
diff --git a/src/api_insee/request/request_token.py b/src/api_insee/request/request_token.py
deleted file mode 100644
index cb822e7..0000000
--- a/src/api_insee/request/request_token.py
+++ /dev/null
@@ -1,25 +0,0 @@
-import urllib.request as ur
-import urllib.error as ue
-import json
-
-from api_insee.conf import API_VERSION
-from .request import RequestService
-
-class RequestTokenService(RequestService):
-
-    def __init__(self, credentials):
-        self.credentials = credentials
-
-    @property
-    def url_path(self):
-        return API_VERSION['url'] + API_VERSION['path_token']
-
-    @property
-    def data(self):
-        return "grant_type=client_credentials".encode('ascii')
-
-    @property
-    def header(self):
-        return {
-            'Authorization' : 'Basic %s' % (self.credentials.encoded)
-        }
diff --git a/src/api_insee/utils/auth_service.py b/src/api_insee/utils/auth_service.py
index 150e274..7c588b2 100644
--- a/src/api_insee/utils/auth_service.py
+++ b/src/api_insee/utils/auth_service.py
@@ -1,30 +1,12 @@
-from api_insee.utils.client_credentials import ClientCredentials
-from api_insee.utils.client_token import ClientToken
-from api_insee.request.request_token import RequestTokenService
-
 class AuthService():
 
     token = None
 
-    def __init__(self, key=False, secret=False):
-
-        self.credentials = ClientCredentials(
-            key    = key,
-            secret = secret
-        )
-        self.generateToken()
-
-    def generateToken(self):
-        data = RequestTokenService(self.credentials).get()
-        self.token = ClientToken(**data)
+    def __init__(self, token = None):
+        self.token = token
 
 
 class MockAuth(AuthService):
 
     def __init__(self):
-        self.token = ClientToken(
-            token_type='Bearer',
-            expires_in=100000,
-            access_token='No Auth',
-            scope='No Scope'
-        )
+        self.token = "mocked-api-key"
\ No newline at end of file
diff --git a/src/api_insee/utils/client_credentials.py b/src/api_insee/utils/client_credentials.py
deleted file mode 100644
index 3f65e49..0000000
--- a/src/api_insee/utils/client_credentials.py
+++ /dev/null
@@ -1,19 +0,0 @@
-import base64
-from api_insee.exeptions.auth_exeption import AuthExeption
-
-class ClientCredentials():
-
-    def __init__(self, key=False, secret=False):
-
-        self.key     = key
-        self.secret  = secret
-
-        if not self.key or not self.secret:
-            raise AuthExeption(self).invalidkeyAndSecret()
-
-        self.encoded = self.getEncodedCredential()
-
-    def getEncodedCredential(self):
-        blike   = (self.key+':'+self.secret).encode('utf-8')
-        encoded = base64.b64encode(blike).decode('utf-8')
-        return encoded
diff --git a/src/api_insee/utils/client_token.py b/src/api_insee/utils/client_token.py
deleted file mode 100644
index e3cefb9..0000000
--- a/src/api_insee/utils/client_token.py
+++ /dev/null
@@ -1,15 +0,0 @@
-import time
-
-class ClientToken():
-
-    token_type       = False
-    epoch_expiration = False
-    access_token     = False
-    scope            = False
-
-    def __init__(self, **data):
-
-        self.token_type       = data.get('token_type', False)
-        self.epoch_expiration = data.get('expires_in', 0) + int(time.time())
-        self.access_token     = data.get('access_token', False)
-        self.scope            = data.get('scope', False)
diff --git a/tests/conftest.example.py b/tests/conftest.example.py
index 12450b5..ae88067 100644
--- a/tests/conftest.example.py
+++ b/tests/conftest.example.py
@@ -23,8 +23,6 @@
 #  Replace API consumer data with yours
 #
 
-SIRENE_API_CONSUMER_KEY    = "your-key"
-SIRENE_API_CONSUMER_SECRET = "your-secret"
 SIRENE_API_TOKEN           = "your-token"
 
 
@@ -43,4 +41,11 @@ def exec(api_request):
         if request.config.getoption("--api-insee-execute-request"):
             api_request.get()
 
-    return exec
\ No newline at end of file
+    return exec
+
+from api_insee import ApiInsee
+
+@pytest.fixture
+def api():
+    api = ApiInsee(token=SIRENE_API_TOKEN)
+    return api
\ No newline at end of file
diff --git a/tests/test_authentication.py b/tests/test_authentication.py
deleted file mode 100644
index 8ef3b06..0000000
--- a/tests/test_authentication.py
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-import pytest
-import conftest as conf
-
-from api_insee import ApiInsee
-from api_insee.exeptions.auth_exeption import AuthExeption
-
-__author__ = "Lenselle Nicolas"
-__copyright__ = "Lenselle Nicolas"
-__license__ = "mit"
-
-def test_missing_credentials():
-
-    with pytest.raises(AuthExeption):
-        api = ApiInsee(False, False)
-
-@pytest.mark.http
-def test_unauthorized_credentials():
-
-    with pytest.raises(AuthExeption):
-        api = ApiInsee(
-            key   = conf.SIRENE_API_CONSUMER_KEY+'wrongly',
-            secret= conf.SIRENE_API_CONSUMER_SECRET
-        )
-
-@pytest.mark.http
-def test_generate_token():
-
-    api = ApiInsee(
-        key   = conf.SIRENE_API_CONSUMER_KEY,
-        secret= conf.SIRENE_API_CONSUMER_SECRET
-    )
-
-    assert len(api.auth.token.access_token) > 0
diff --git a/tests/test_csv.py b/tests/test_csv.py
index 85fd209..4d221aa 100644
--- a/tests/test_csv.py
+++ b/tests/test_csv.py
@@ -26,8 +26,7 @@ def test_request_format_fallback_is_json(api, execute_request):
 def test_request_format_fallback_is_csv(api, execute_request):
 
     api_csv = ApiInsee(
-        key = conf.SIRENE_API_CONSUMER_KEY,
-        secret = conf.SIRENE_API_CONSUMER_SECRET,
+        token=conf.SIRENE_API_TOKEN,
         format = 'csv'
     )
 
diff --git a/tests/test_cursor.py b/tests/test_cursor.py
index e4e73d2..56d4918 100644
--- a/tests/test_cursor.py
+++ b/tests/test_cursor.py
@@ -2,9 +2,7 @@
 # -*- coding: utf-8 -*-
 
 import pytest
-import conftest as conf
 
-from api_insee import ApiInsee
 from api_insee.conf import API_VERSION
 import api_insee.criteria as Criteria
 
diff --git a/tests/test_liens_sucession_service.py b/tests/test_liens_sucession_service.py
index e862ce6..8fe0a9d 100644
--- a/tests/test_liens_sucession_service.py
+++ b/tests/test_liens_sucession_service.py
@@ -3,7 +3,6 @@
 
 import pytest
 
-from api_insee import ApiInsee
 from api_insee.conf import API_VERSION
 import api_insee.criteria as Criteria
 
diff --git a/tests/test_siren.py b/tests/test_siren.py
index b64c30c..a3e323c 100644
--- a/tests/test_siren.py
+++ b/tests/test_siren.py
@@ -2,9 +2,7 @@
 # -*- coding: utf-8 -*-
 
 import pytest
-import conftest as conf
 
-from api_insee import ApiInsee
 from api_insee.conf import API_VERSION
 import api_insee.criteria as Criteria
 
diff --git a/tests/test_siret.py b/tests/test_siret.py
index cc61c51..2733df3 100644
--- a/tests/test_siret.py
+++ b/tests/test_siret.py
@@ -2,9 +2,7 @@
 # -*- coding: utf-8 -*-
 
 import pytest
-import conftest as conf
 
-from api_insee import ApiInsee
 from api_insee.conf import API_VERSION
 import api_insee.criteria as Criteria