From c78edda64fc39ff709e7f19bf180a74cd6abedb0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomek=20S=C5=82oma?=
 <82450784+Hedrekao@users.noreply.github.com>
Date: Tue, 25 Nov 2025 01:44:43 +0100
Subject: [PATCH] fix: always include output in function call result message
 (#2414)

This follows the official OpenAI API schema
---
 .../packages/core/agent_framework/openai/_responses_client.py  | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/python/packages/core/agent_framework/openai/_responses_client.py b/python/packages/core/agent_framework/openai/_responses_client.py
index b39230aab8..9e46478c5e 100644
--- a/python/packages/core/agent_framework/openai/_responses_client.py
+++ b/python/packages/core/agent_framework/openai/_responses_client.py
@@ -518,9 +518,8 @@ class OpenAIBaseResponsesClient(OpenAIBase, BaseChatClient):
                 args: dict[str, Any] = {
                     "call_id": content.call_id,
                     "type": "function_call_output",
+                    "output": prepare_function_call_results(content.result),
                 }
-                if content.result:
-                    args["output"] = prepare_function_call_results(content.result)
                 return args
             case FunctionApprovalRequestContent():
                 return {