diff --git a/scripts/cadence_observer_readback.py b/scripts/cadence_observer_readback.py
index 1f72060..32f957e 100644
--- a/scripts/cadence_observer_readback.py
+++ b/scripts/cadence_observer_readback.py
@@ -81,7 +81,10 @@ def read_http(origin, token, path, allowed):
     with response:
         raw = response.read(1048577)
         require(len(raw) <= 1048576, "readback_too_large")
-        require(response.status == 200, "independent_readback_failed")
+        # Name the read kind and HTTP status only; never the body or the token.
+        kind = ("reconciliation" if path.startswith("/v1/reconciliation")
+                else "stream_findings" if path == "/v1/stream-findings" else "event")
+        require(response.status == 200, f"independent_readback_failed:{kind}:{response.status}")
         return json.loads(raw)