Update app.py

app.py

@@ -35,6 +35,12 @@ def respond(
     # Determine which token to use - custom API key if provided, otherwise the ACCESS_TOKEN
     token_to_use = custom_api_key if custom_api_key.strip() != "" else ACCESS_TOKEN
     
+    # Log which token source we're using (without printing the actual token)
+    if custom_api_key.strip() != "":
+        print("USING CUSTOM API KEY: BYOK token provided by user is being used for authentication")
+    else:
+        print("USING DEFAULT API KEY: Environment variable HF_TOKEN is being used for authentication")
+    
     # Initialize the Inference Client with the provider and appropriate token
     client = InferenceClient(token=token_to_use, provider=provider)
     print(f"Hugging Face Inference Client initialized with {provider} provider.")