diff --git a/tiddl/core/auth/client.py b/tiddl/core/auth/client.py
index d85c3c9..78fddf6 100644
--- a/tiddl/core/auth/client.py
+++ b/tiddl/core/auth/client.py
@@ -1,10 +1,13 @@
 import base64
+import logging
 from os import environ
 from requests import request
 from typing import Any, TypeAlias
 
 from tiddl.core.auth.exceptions import AuthClientError
 
+log = logging.getLogger("tiddl")
+
 
 def get_auth_credentials() -> tuple[str, str]:
     ENV_KEY = "TIDDL_AUTH"
@@ -22,6 +25,8 @@ def get_auth_credentials() -> tuple[str, str]:
     if env_value:
         client_id, client_secret = env_value.split(";")
 
+    log.debug(f"{client_id=}, {bool(env_value)=}")
+
     return client_id, client_secret