diff --git a/tests/integration/test_parser_recalibration_engine.py b/tests/integration/test_parser_recalibration_engine.py
new file mode 100644
index 00000000..2884cf43
--- /dev/null
+++ b/tests/integration/test_parser_recalibration_engine.py
@@ -0,0 +1,25 @@
+from __future__ import annotations
+
+from openamp_foundry.cli.main import build_parser
+
+
+def test_recalibration_engine_parser_defaults_are_stable():
+    parser = build_parser()
+    args = parser.parse_args([
+        "recalibration-engine",
+        "--intake-report",
+        "intake.json",
+        "--gate-verdict",
+        "gate.json",
+        "--current-weights",
+        "{}",
+    ])
+
+    assert args.command == "recalibration-engine"
+    assert args.intake_report == "intake.json"
+    assert args.gate_verdict == "gate.json"
+    assert args.current_weights == "{}"
+    assert args.l1_budget == 0.10
+    assert args.out_json is None
+    assert args.out_md is None
+    assert args.dry_run is False