diff --git a/app/views/cards/_card.json.jbuilder b/app/views/cards/_card.json.jbuilder
index a1c509a66..e5792f127 100644
--- a/app/views/cards/_card.json.jbuilder
+++ b/app/views/cards/_card.json.jbuilder
@@ -6,6 +6,7 @@ json.cache! card do
 
   json.tags card.tags.pluck(:title).sort
 
+  json.closed card.closed?
   json.golden card.golden?
   json.last_active_at card.last_active_at.utc
   json.created_at card.created_at.utc
diff --git a/test/controllers/cards_controller_test.rb b/test/controllers/cards_controller_test.rb
index 635b2d2e0..c6c56fc83 100644
--- a/test/controllers/cards_controller_test.rb
+++ b/test/controllers/cards_controller_test.rb
@@ -145,6 +145,7 @@ class CardsControllerTest < ActionDispatch::IntegrationTest
     assert_response :success
 
     assert_equal card.title, @response.parsed_body["title"]
+    assert_equal card.closed?, @response.parsed_body["closed"]
     assert_equal 2, @response.parsed_body["steps"].size
   end