diff --git a/cadquery/assembly.py b/cadquery/assembly.py
index fdf98dd73..0e79f3f55 100644
--- a/cadquery/assembly.py
+++ b/cadquery/assembly.py
@@ -627,6 +627,37 @@ def export(
 
         return self
 
+    def toBOM(
+        self,
+        indent: int = 0,
+        _result: Optional[List[Dict[str, Any]]] = None,
+    ) -> List[Dict[str, Any]]:
+        """
+        Generate a Bill of Materials (BOM) for this assembly.
+
+        Returns a flat list of dictionaries, one per component, with fields:
+        - name: component name
+        - level: nesting depth (0 = root)
+        - has_shape: whether the component has geometry
+
+        :param indent: current nesting level (used internally for recursion)
+        :return: list of BOM line items
+        """
+
+        if _result is None:
+            _result = []
+
+        _result.append({
+            "name": self.name,
+            "level": indent,
+            "has_shape": self.obj is not None,
+        })
+
+        for child in self.children:
+            child.toBOM(indent=indent + 1, _result=_result)
+
+        return _result
+
     @classmethod
     def importStep(cls, path: str, unit: UnitLiterals = "MM") -> Self:
         """
diff --git a/cadquery/occ_impl/shapes.py b/cadquery/occ_impl/shapes.py
index 7d3c665a9..72c5cf5db 100644
--- a/cadquery/occ_impl/shapes.py
+++ b/cadquery/occ_impl/shapes.py
@@ -6553,14 +6553,21 @@ def plane() -> Face:
     return _shape(BRepBuilderAPI_MakeFace(pln_geom, -INF, INF, -INF, INF).Face(), Face)
 
 
-def box(w: float, l: float, h: float) -> Solid:
+def box(length: float, width: float, height: float) -> Solid:
     """
-    Construct a solid box.
+    Construct a solid box centered on the XY plane.
+
+    :param length: box size along the X axis
+    :param width: box size along the Y axis
+    :param height: box size along the Z axis
     """
 
     return _shape(
         BRepPrimAPI_MakeBox(
-            gp_Ax2(Vector(-w / 2, -l / 2, 0).toPnt(), Vector(0, 0, 1).toDir()), w, l, h
+            gp_Ax2(Vector(-length / 2, -width / 2, 0).toPnt(), Vector(0, 0, 1).toDir()),
+            length,
+            width,
+            height,
         ).Shape(),
         Solid,
     )