diff --git a/api/client-server/v2_alpha/definitions/event_filter.json b/api/client-server/v2_alpha/definitions/event_filter.json
index b8ab1352..76d8be64 100644
--- a/api/client-server/v2_alpha/definitions/event_filter.json
+++ b/api/client-server/v2_alpha/definitions/event_filter.json
@@ -1,6 +1,11 @@
 {
   "type": "object",
   "properties": {
+    "limit": {
+      "type": "integer",
+      "description":
+        "The maximum number of events to return."
+    },
     "types": {
       "type": "array",
       "description":