diff --git a/agent/tests/test_write_confirmation.py b/agent/tests/test_write_confirmation.py
index 8dbc0e0..f333282 100644
--- a/agent/tests/test_write_confirmation.py
+++ b/agent/tests/test_write_confirmation.py
@@ -104,6 +104,23 @@ def test_summarize_args_joins_lists_and_compacts_nested_values():
     }
 
 
+def test_summarize_args_renders_list_items_like_top_level_values():
+    fields = summarize_args(
+        {
+            "pages": [{"title": "Q3 plan"}, {"title": "Q4 plan"}],
+            "flags": [True, False],
+        }
+    )
+
+    assert fields == [
+        {
+            "label": "Pages",
+            "value": '{"title": "Q3 plan"}, {"title": "Q4 plan"}',
+        },
+        {"label": "Flags", "value": "Yes, No"},
+    ]
+
+
 def test_summarize_args_truncates_an_overlong_value():
     fields = summarize_args({"description": "x" * 400})
 
diff --git a/agent/write_confirmation.py b/agent/write_confirmation.py
index a2305b9..91bd8f6 100644
--- a/agent/write_confirmation.py
+++ b/agent/write_confirmation.py
@@ -93,7 +93,9 @@ def _stringify(value) -> str:
     if isinstance(value, bool):
         return "Yes" if value else "No"
     if isinstance(value, (list, tuple)):
-        return ", ".join(str(v) for v in value)
+        # Each item the way it would read on its own: a list of objects is
+        # still JSON, not Python's repr of it.
+        return ", ".join(_stringify(v) for v in value)
     if isinstance(value, dict):
         return json.dumps(value, ensure_ascii=False, default=str)
     return str(value)