diff --git a/tests/integration/test_parser_novelty_broad.py b/tests/integration/test_parser_novelty_broad.py
new file mode 100644
index 00000000..7dfd551f
--- /dev/null
+++ b/tests/integration/test_parser_novelty_broad.py
@@ -0,0 +1,19 @@
+from __future__ import annotations
+
+from openamp_foundry.cli.main import build_parser
+
+
+def test_novelty_broad_parser_defaults_are_stable():
+    parser = build_parser()
+    args = parser.parse_args([
+        "novelty-check-broad",
+        "--panel-csv",
+        "panel.csv",
+    ])
+
+    assert args.command == "novelty-check-broad"
+    assert args.panel_csv == "panel.csv"
+    assert args.references_csv == "examples/known_reference/amp_curated_references.csv"
+    assert args.out == "outputs/novelty_broad_report.md"
+    assert args.threshold_known == 0.70
+    assert args.threshold_close == 0.50