diff --git a/obip-0004.md b/obip-0004.md
index e48285f..f6f6eb5 100644
--- a/obip-0004.md
+++ b/obip-0004.md
@@ -137,6 +137,8 @@ Returns an array of posts from the user or a peer (i.e. `/ob/posts/:peerId`):
 ]
 ```
 
+- A reasonable limit on the maximum number of array elements in `images` and `tags` should be imposed
+
 #### GET `ob/post`
 
 Returns an individual post from the user or a peer (i.e. `/ob/post/:peerId/:slug_or_hash`):