diff --git a/.w4c/fields.json b/.w4c/fields.json
new file mode 100644
index 0000000..cb8b3d9
--- /dev/null
+++ b/.w4c/fields.json
@@ -0,0 +1,44 @@
+{
+  "schema": 1,
+  "name": "Simple Todo List survey",
+  "fields": [
+    {
+      "key": "theme",
+      "label": "Theme",
+      "type": "select",
+      "options": [
+        "Light",
+        "Dark",
+        "System"
+      ],
+      "default": "System"
+    }
+  ],
+  "pages": {
+    "todo": [
+      {
+        "key": "filterDefault",
+        "label": "Default filter",
+        "type": "select",
+        "options": [
+          "All",
+          "Active",
+          "Done"
+        ],
+        "default": "All"
+      },
+      {
+        "key": "showCounts",
+        "label": "Item counts",
+        "type": "boolean",
+        "default": "true"
+      },
+      {
+        "key": "persistKey",
+        "label": "localStorage key",
+        "type": "text",
+        "default": "w4c.simple-todo.items"
+      }
+    ]
+  }
+}