diff --git a/gateway/run.py b/gateway/run.py
index 5c40d001..47f1f174 100644
--- a/gateway/run.py
+++ b/gateway/run.py
@@ -2031,6 +2031,7 @@ class GatewayRunner:
                     "messages": result.get("messages", []),
                     "api_calls": result.get("api_calls", 0),
                     "tools": tools_holder[0] or [],
+                    "history_offset": len(agent_history),
                 }
             
             # Scan tool results for MEDIA:<path> tags that need to be delivered