1 files changed, 9 insertions, 6 deletions
diff --git a/mcp_server/server.py b/mcp_server/server.py
index cc8fe4a..dcc960b 100644
--- a/mcp_server/server.py
+++ b/mcp_server/server.py
@@ -73,15 +73,18 @@ def add_to_pantry(items: list[dict]) -> dict:
     """Add items the user bought. Each item is {name, location?, quantity?,
     unit?} — e.g. {"name": "pork mince", "location": "fridge"}. Existing items
     are restocked (set back to In) rather than duplicated."""
-    payload = [
-        {
+    payload = []
+    for it in items:
+        entry = {
             "ingredient_name": it.get("name") or it.get("ingredient_name"),
             "location": it.get("location", "fridge"),
-            "quantity": it.get("quantity"),
-            "unit": it.get("unit"),
         }
-        for it in items
-    ]
+        # Only forward optional fields when set, so the API applies its defaults.
+        if it.get("quantity") is not None:
+            entry["quantity"] = it["quantity"]
+        if it.get("unit"):
+            entry["unit"] = it["unit"]
+        payload.append(entry)
     try:
         return _api.bulk_add(payload)
     except FoodApiError as e: