diff --git a/src/site/SW.tinyboard.coffee b/src/site/SW.tinyboard.coffee
index 412724b39..6e9f6fecc 100644
--- a/src/site/SW.tinyboard.coffee
+++ b/src/site/SW.tinyboard.coffee
@@ -63,6 +63,9 @@ SW.tinyboard =
     threadsListJSON: ({siteID, boardID}) ->
       root = Conf['siteProperties'][siteID]?.root
       if root then "#{root}#{boardID}/threads.json" else ''
+    catalogJSON: ({siteID, boardID}) ->
+      root = Conf['siteProperties'][siteID]?.root
+      if root then "#{root}#{boardID}/catalog.json" else ''
 
   selectors:
     board:         'form[name="postcontrols"]'
diff --git a/src/site/SW.yotsuba.coffee b/src/site/SW.yotsuba.coffee
index b1c3a0d15..2aa84bba3 100644
--- a/src/site/SW.yotsuba.coffee
+++ b/src/site/SW.yotsuba.coffee
@@ -6,6 +6,7 @@ SW.yotsuba =
     threadJSON: ({boardID, threadID}) -> "#{location.protocol}//a.4cdn.org/#{boardID}/thread/#{threadID}.json"
     threadsListJSON: ({boardID})      -> "#{location.protocol}//a.4cdn.org/#{boardID}/threads.json"
     archiveListJSON: ({boardID})      -> if BoardConfig.isArchived(boardID) then "#{location.protocol}//a.4cdn.org/#{boardID}/archive.json" else ''
+    catalogJSON:     ({boardID})      -> "#{location.protocol}//a.4cdn.org/#{boardID}/catalog.json"
 
   selectors:
     board:         '.board'