diff --git a/app/main.py b/app/main.py
index 90fd052..50a0193 100644
--- a/app/main.py
+++ b/app/main.py
@@ -268,7 +268,7 @@ async def _ensure_opencode_session(email: str) -> str:
             f"{OPENCODE_URL}/session",
             auth=_opencode_auth(),
             headers={"x-opencode-directory": "/home/madcat"},
-            json={"title": f"chat-saiden:{email}"},
+            json={"title": f"chat-saiden:{email}", "agent": "chat"},
         )
         resp.raise_for_status()
         sid = resp.json()["id"]