@@ -51,18 +51,25 @@ class ApplyFeatureViewRequestBody(BaseModel):
     owner: Optional[str] = ""
 
 
-def _extract_feature_view_from_any(any_feature_view: dict) -> dict:
+def _extract_feature_view_from_any(
+    any_feature_view: dict, project: Optional[str] = None
+) -> dict:
     """Extract the specific feature view type and data from an AnyFeatureView object.
 
     Args:
         any_feature_view: Dictionary containing the AnyFeatureView data
+        project: Project the feature view was read from, filled into an unset spec.project
 
     Returns:
         Dictionary with 'type' and feature view data, or empty dict if no valid type found
     """
     for key, value in any_feature_view.items():
         if value:
-            return {"type": key, **value}
+            result = {"type": key, **value}
+            spec = result.get("spec")
+            if project and isinstance(spec, dict) and not spec.get("project"):
+                result["spec"] = {**spec, "project": project}
+            return result
 
     return {}
 
@@ -110,7 +117,9 @@ def list_feature_views_all(
             response = grpc_call(grpc_handler.ListAllFeatureViews, req)
             any_feature_views = response.get("featureViews", [])
             for any_feature_view in any_feature_views:
-                feature_view = _extract_feature_view_from_any(any_feature_view)
+                feature_view = _extract_feature_view_from_any(
+                    any_feature_view, project_name
+                )
                 if feature_view:
                     feature_view["project"] = project_name
                     all_feature_views.append(feature_view)
@@ -157,7 +166,7 @@ def get_any_feature_view(
         response = grpc_call(grpc_handler.GetAnyFeatureView, req)
         any_feature_view = response.get("anyFeatureView", {})
 
-        result = _extract_feature_view_from_any(any_feature_view)
+        result = _extract_feature_view_from_any(any_feature_view, project)
 
         if include_relationships:
             relationships = get_object_relationships(
@@ -315,7 +324,7 @@ def list_all_feature_views(
         # Extract the specific type of feature view from each AnyFeatureView
         feature_views = []
         for any_feature_view in any_feature_views:
-            feature_view = _extract_feature_view_from_any(any_feature_view)
+            feature_view = _extract_feature_view_from_any(any_feature_view, project)
             if feature_view:
                 feature_views.append(feature_view)
 
 
@@ -2,7 +2,7 @@
 import logging
 import re
 
-from fastapi import Depends, FastAPI, HTTPException, Request, status
+from fastapi import Depends, FastAPI, HTTPException, Request
 from fastapi.exceptions import RequestValidationError
 from fastapi.responses import JSONResponse
 from pydantic import ValidationError
@@ -63,12 +63,6 @@ def __init__(self, store: FeatureStore):
             root_path="/api/v1",
             docs_url="/",
             redoc_url="/docs",
-            default_status_code=status.HTTP_200_OK,
-            default_headers={
-                "X-Content-Type-Options": "nosniff",
-                "X-XSS-Protection": "1; mode=block",
-                "X-Frame-Options": "DENY",
-            },
         )
         self._add_exception_handlers()
         self._add_logging_middleware()
 
@@ -215,6 +215,26 @@ def test_feature_views_type_field_via_rest(fastapi_test_app):
     assert data["spec"]["name"] == "user_profile"
 
 
+def test_feature_views_spec_project_via_rest(fastapi_test_app):
+    """Test that spec.project is populated on every feature view endpoint."""
+    response = fastapi_test_app.get("/feature_views?project=demo_project")
+    assert response.status_code == 200
+    for fv in response.json()["featureViews"]:
+        assert fv["spec"]["project"] == "demo_project"
+
+    response = fastapi_test_app.get("/feature_views/user_profile?project=demo_project")
+    assert response.status_code == 200
+    assert response.json()["spec"]["project"] == "demo_project"
+
+    response = fastapi_test_app.get("/feature_views/all")
+    assert response.status_code == 200
+    feature_views = response.json()["featureViews"]
+    assert feature_views
+    for fv in feature_views:
+        assert fv["project"] == "demo_project"
+        assert fv["spec"]["project"] == "demo_project"
+
+
 def test_feature_views_entity_filtering_via_rest(fastapi_test_app):
     """Test that feature views can be filtered by entity."""
     response = fastapi_test_app.get("/feature_views?project=demo_project")