diff --git a/pylib/anki/decks.py b/pylib/anki/decks.py
index 91029d953..18796f713 100644
--- a/pylib/anki/decks.py
+++ b/pylib/anki/decks.py
@@ -200,6 +200,9 @@ class DeckManager:
         deck["browserCollapsed"] = not collapsed
         self.save(deck)
 
+    def count(self) -> int:
+        return len(self.decks)
+
     def get(self, did: Union[int, str], default: bool = True) -> Any:
         id = str(did)
         if id in self.decks: