diff --git a/aria-brain/proxy_client.py b/aria-brain/proxy_client.py
index fb9c95f..c86cb7a 100644
--- a/aria-brain/proxy_client.py
+++ b/aria-brain/proxy_client.py
@@ -111,6 +111,20 @@ class ProxyClient:
         msg = choices[0].get("message") or {}
         finish_reason = choices[0].get("finish_reason", "")
 
+        # Diagnose: was hat der Proxy zurueckgegeben?
+        # Wir loggen die rohe message + finish_reason damit wir sehen ob
+        # tool_calls da sind, leer oder schlicht weggeschnitten werden.
+        logger.info("Proxy ← finish=%s keys=%s tool_calls=%d content_len=%d",
+                    finish_reason,
+                    sorted(msg.keys()),
+                    len(msg.get("tool_calls") or []),
+                    len(msg.get("content") or "") if isinstance(msg.get("content"), str)
+                    else sum(len(p.get("text", "")) for p in (msg.get("content") or []) if isinstance(p, dict)))
+        try:
+            logger.info("Proxy ← raw-msg=%s", json.dumps(msg)[:1500])
+        except Exception:
+            logger.info("Proxy ← raw-msg(non-serial)=%s", str(msg)[:1500])
+
         content = msg.get("content") or ""
         if isinstance(content, list):
             content = "".join(