diff --git a/duniterpy/api/ws2p/__init__.py b/duniterpy/api/ws2p/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..09c79049209da90a8a0199f954c6c32c06d6ff46
--- /dev/null
+++ b/duniterpy/api/ws2p/__init__.py
@@ -0,0 +1,25 @@
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Authors:
+# Caner Candan <caner@candan.fr>, http://caner.candan.fr
+# Inso <insomniak.fr at gmail.com>
+import logging
+from . import network, requests
+
+__all__ = ["network", "requests"]
+
+PROTOCOL_VERSION = 1
+
+logger = logging.getLogger("duniter")
diff --git a/duniterpy/api/ws2p/requests.py b/duniterpy/api/ws2p/requests.py
index 59ae17911fdb88a902ad0c08e5a100b4ff36c0fb..2586253cb1d5374eeb785a66fbc17e2bb3755203 100644
--- a/duniterpy/api/ws2p/requests.py
+++ b/duniterpy/api/ws2p/requests.py
@@ -1,8 +1,5 @@
 import json
 import re
-from typing import Optional
-
-from duniterpy.helpers import get_ws2p_challenge
 from duniterpy.api.bma.blockchain import BLOCK_SCHEMA, BLOCKS_SCHEMA
 
 ERROR_RESPONSE_SCHEMA = {
@@ -96,7 +93,7 @@ REQUIREMENTS_SCHEMA = {
                     },
                     "pendingCerts": {
                         "type": "array",
-                        "items" : {
+                        "items": {
                             "type": "object",
                             "properties": {
                                 "block": {"type": "number"},
@@ -118,7 +115,7 @@ REQUIREMENTS_SCHEMA = {
                     },
                     "pendingMemberships": {
                         "type": "array",
-                        "items" : {
+                        "items": {
                             "type": "object",
                             "properties": {
                                 "block": {"type": "string"},