diff --git a/src/util/BaseWSClient.ts b/src/util/BaseWSClient.ts
index dd923f2..2c23bd2 100644
--- a/src/util/BaseWSClient.ts
+++ b/src/util/BaseWSClient.ts
@@ -57,6 +57,7 @@ interface WSClientEventMap<WsKey extends string> {
 export interface EmittableEvent<TEvent = any> {
   eventType: 'response' | 'update' | 'exception' | 'authenticated';
   event: TEvent;
+  isWSAPIResponse?: boolean;
 }
 
 // Type safety for on and emit handlers: https://stackoverflow.com/a/61609010/880837
diff --git a/src/websocket-client.ts b/src/websocket-client.ts
index 025d53b..827d267 100644
--- a/src/websocket-client.ts
+++ b/src/websocket-client.ts
@@ -717,6 +717,7 @@ export class WebsocketClient extends BaseWebsocketClient<WsKey> {
             results.push({
               eventType: 'exception',
               event: parsed,
+              isWSAPIResponse: true,
             });
             return results;
           }
@@ -743,6 +744,7 @@ export class WebsocketClient extends BaseWebsocketClient<WsKey> {
           results.push({
             eventType: 'response',
             event: parsed,
+            isWSAPIResponse: true,
           });
 
           return results;