diff --git a/service/src/llm/client.py b/service/src/llm/client.py
index 0fbddca..0f03f5b 100644
--- a/service/src/llm/client.py
+++ b/service/src/llm/client.py
@@ -127,6 +127,7 @@ class ModelBossLLMClient(LLMClient):
             messages=messages,
             max_tokens=max_tokens,
             temperature=temperature,
+            x_client_id="cot-reasoning",
         )
 
         # Handle both string and iterator responses