diff --git a/neptune/__init__.py b/neptune/__init__.py
index 69e518976..7743e36f8 100644
--- a/neptune/__init__.py
+++ b/neptune/__init__.py
@@ -18,6 +18,7 @@
 import threading
 
 from neptune import envs
+from neptune import constants
 from neptune.exceptions import MissingProjectQualifiedName, Uninitialized, InvalidNeptuneBackend
 from neptune.internal.backends.hosted_neptune_backend import HostedNeptuneBackend
 from neptune.internal.backends.offline_backend import OfflineBackend
@@ -38,13 +39,12 @@
 """Access Neptune as an anonymous user.
 You can pass this value as api_token during init() call, either by an environment variable or passing it directly
 """
-ANONYMOUS = 'ANONYMOUS'
+ANONYMOUS = constants.ANONYMOUS
 
 """Anonymous user API token.
 You can pass this value as api_token during init() call, either by an environment variable or passing it directly
 """
-ANONYMOUS_API_TOKEN = 'eyJhcGlfYWRkcmVzcyI6Imh0dHBzOi8vdWkubmVwdHVuZS5haSIsImFwaV91cmwiOiJodHRwczovL3VpLm5lcHR1bmUuYW' \
-                      'kiLCJhcGlfa2V5IjoiYjcwNmJjOGYtNzZmOS00YzJlLTkzOWQtNGJhMDM2ZjkzMmU0In0='
+ANONYMOUS_API_TOKEN = constants.ANONYMOUS_API_TOKEN
 
 
 def init(project_qualified_name=None, api_token=None, proxies=None, backend=None):
diff --git a/neptune/constants.py b/neptune/constants.py
new file mode 100644
index 000000000..dc8f9815d
--- /dev/null
+++ b/neptune/constants.py
@@ -0,0 +1,22 @@
+#
+# Copyright (c) 2020, Neptune Labs Sp. z o.o.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+"""Constants used by Neptune"""
+
+ANONYMOUS = 'ANONYMOUS'
+
+ANONYMOUS_API_TOKEN = 'eyJhcGlfYWRkcmVzcyI6Imh0dHBzOi8vdWkubmVwdHVuZS5haSIsImFwaV91cmwiOiJodHRwczovL3VpLm5lcHR1bmUuYW' \
+                      'kiLCJhcGlfa2V5IjoiYjcwNmJjOGYtNzZmOS00YzJlLTkzOWQtNGJhMDM2ZjkzMmU0In0='
diff --git a/neptune/internal/backends/credentials.py b/neptune/internal/backends/credentials.py
index 05fd0a873..4bb9bca99 100644
--- a/neptune/internal/backends/credentials.py
+++ b/neptune/internal/backends/credentials.py
@@ -21,6 +21,7 @@
 
 from neptune import envs
 from neptune.api_exceptions import InvalidApiKey
+from neptune.constants import ANONYMOUS_API_TOKEN
 from neptune.exceptions import MissingApiToken
 
 _logger = logging.getLogger(__name__)
@@ -63,6 +64,8 @@ class Credentials(object):
     def __init__(self, api_token=None):
         if api_token is None:
             api_token = os.getenv(envs.API_TOKEN_ENV_NAME)
+        elif api_token == ANONYMOUS_API_TOKEN:
+            pass  # Do not warn about using public API token
         else:
             _logger.warning(
                 "WARNING: It is not secure to place API token in your source code. "
diff --git a/neptune/internal/backends/hosted_neptune_backend.py b/neptune/internal/backends/hosted_neptune_backend.py
index b64982941..79d61d25c 100644
--- a/neptune/internal/backends/hosted_neptune_backend.py
+++ b/neptune/internal/backends/hosted_neptune_backend.py
@@ -53,7 +53,7 @@
 from neptune.oauth import NeptuneAuthenticator
 from neptune.projects import Project
 from neptune.utils import is_float, with_api_exceptions_handler, update_session_proxies
-
+from neptune.constants import ANONYMOUS, ANONYMOUS_API_TOKEN
 
 _logger = logging.getLogger(__name__)
 
@@ -62,7 +62,7 @@ class HostedNeptuneBackend(Backend):
 
     @with_api_exceptions_handler
     def __init__(self, api_token=None, proxies=None):
-        from neptune import ANONYMOUS, ANONYMOUS_API_TOKEN
+
         if api_token == ANONYMOUS:
             api_token = ANONYMOUS_API_TOKEN