diff --git a/Library-Notification-Service/src/api.py b/Library-Notification-Service/src/api.py
index bb73c51..4ea5199 100644
--- a/Library-Notification-Service/src/api.py
+++ b/Library-Notification-Service/src/api.py
@@ -1,6 +1,5 @@
 """Module interacting with library catalogue api"""
 
-
 import json
 import urllib.parse
 from typing import List
diff --git a/Library-Notification-Service/src/env.py b/Library-Notification-Service/src/env.py
index 6a8f401..e39bdd2 100644
--- a/Library-Notification-Service/src/env.py
+++ b/Library-Notification-Service/src/env.py
@@ -1,6 +1,5 @@
 """Module to retreive/declare the environment variables."""
 
-
 import os
 
 MAX_NOTIFICATION_RESULTS_COUNT = os.environ["MAX_NOTIFICATION_RESULTS_COUNT"]
@@ -20,3 +19,14 @@
 NOTIFICATIONS_API_URL = os.environ["NOTIFICATIONS_API_URL"]
 NOTIFICATIONS_API_SECRET = os.environ["NOTIFICATIONS_API_SECRET"]
 NOTIFICATIONS_CHANNEL_ID = os.environ["NOTIFICATIONS_CHANNEL_ID"]
+
+
+"""
+export MAX_NOTIFICATION_RESULTS_COUNT=20
+export LIBRARY_CATALOGUE_SITE_API="https://catalogue.library.cern/api/literature/?q="
+export LIBRARY_CATALOGUE_SITE_URL="https://catalogue.library.cern/search?q="
+export LIBRARY_CATALOGUE_BACKOFFICE_ITEMS_API="https://catalogue.library.cern/api/items/?q="
+export LIBRARY_CATALOGUE_BACKOFFICE_EITEMS_API="https://catalogue.library.cern/api/eitems/?q="
+export NOTIFICATIONS_API_URL="https://notifications.web.cern.ch/api/notifications"
+export NOTIFICATIONS_CHANNEL_ID="4e383ca0-7df0-421f-a062-741d5d459cd8"
+"""
diff --git a/Library-Notification-Service/src/providers/library_newsletter.py b/Library-Notification-Service/src/providers/library_newsletter.py
index 60dc7da..633884f 100644
--- a/Library-Notification-Service/src/providers/library_newsletter.py
+++ b/Library-Notification-Service/src/providers/library_newsletter.py
@@ -1,6 +1,5 @@
 """The command line module containing all the commands to filter documents."""
 
-
 from typing import Tuple
 
 import click