diff --git a/fern/openapi.json b/fern/openapi.json
index 8b2a10b7..cef851d4 100644
--- a/fern/openapi.json
+++ b/fern/openapi.json
@@ -26682,11 +26682,14 @@
                                 }
                               ]
                             },
+                            "client_message_id": {
+                              "type": "string"
+                            },
                             "otid": {
                               "type": "string"
                             }
                           },
-                          "required": ["role", "content"]
+                          "required": ["role", "content", "client_message_id"]
                         },
                         {
                           "type": "object",
@@ -26819,6 +26822,25 @@
               }
             }
           },
+          "400": {
+            "description": "400",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "object",
+                  "properties": {
+                    "errorCode": {
+                      "type": "string"
+                    },
+                    "message": {
+                      "type": "string"
+                    }
+                  },
+                  "required": ["errorCode", "message"]
+                }
+              }
+            }
+          },
           "404": {
             "description": "404",
             "content": {