From 6b1db9624b96436dc7b3b7bd1b9f9e04397d7e4e Mon Sep 17 00:00:00 2001
From: KatHaruto <haru10.jm@gmail.com>
Date: Tue, 10 Jun 2025 19:30:45 +0900
Subject: [PATCH] fix: add ensure_ascii=False to json.dumps for correct Unicode
 output

---
 src/agents/extensions/models/litellm_model.py | 10 +++++++---
 src/agents/models/openai_chatcompletions.py   |  7 ++++---
 src/agents/models/openai_responses.py         | 12 +++++++++---
 src/agents/tool_context.py                    |  1 +
 4 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/src/agents/extensions/models/litellm_model.py b/src/agents/extensions/models/litellm_model.py
index 7cf7a2de5..163e94b27 100644
--- a/src/agents/extensions/models/litellm_model.py
+++ b/src/agents/extensions/models/litellm_model.py
@@ -96,7 +96,11 @@ async def get_response(
                 logger.debug("Received model response")
             else:
                 logger.debug(
-                    f"LLM resp:\n{json.dumps(response.choices[0].message.model_dump(), indent=2)}\n"
+                    f"""LLM resp:\n{
+                        json.dumps(
+                            response.choices[0].message.model_dump(), indent=2, ensure_ascii=False
+                        )
+                    }\n"""
                 )
 
             if hasattr(response, "usage"):
@@ -263,8 +267,8 @@ async def _fetch_response(
         else:
             logger.debug(
                 f"Calling Litellm model: {self.model}\n"
-                f"{json.dumps(converted_messages, indent=2)}\n"
-                f"Tools:\n{json.dumps(converted_tools, indent=2)}\n"
+                f"{json.dumps(converted_messages, indent=2, ensure_ascii=False)}\n"
+                f"Tools:\n{json.dumps(converted_tools, indent=2, ensure_ascii=False)}\n"
                 f"Stream: {stream}\n"
                 f"Tool choice: {tool_choice}\n"
                 f"Response format: {response_format}\n"
diff --git a/src/agents/models/openai_chatcompletions.py b/src/agents/models/openai_chatcompletions.py
index 6b4045d21..8ce1690b0 100644
--- a/src/agents/models/openai_chatcompletions.py
+++ b/src/agents/models/openai_chatcompletions.py
@@ -80,12 +80,13 @@ async def get_response(
                 if message is not None:
                     logger.debug(
                         "LLM resp:\n%s\n",
-                        json.dumps(message.model_dump(), indent=2),
+                        json.dumps(message.model_dump(), indent=2, ensure_ascii=False),
                     )
                 else:
                     logger.debug(
                         "LLM resp had no message. finish_reason: %s",
                         first_choice.finish_reason,
+                        ensure_ascii=False,
                     )
 
             usage = (
@@ -247,8 +248,8 @@ async def _fetch_response(
             logger.debug("Calling LLM")
         else:
             logger.debug(
-                f"{json.dumps(converted_messages, indent=2)}\n"
-                f"Tools:\n{json.dumps(converted_tools, indent=2)}\n"
+                f"{json.dumps(converted_messages, indent=2, ensure_ascii=False)}\n"
+                f"Tools:\n{json.dumps(converted_tools, indent=2, ensure_ascii=False)}\n"
                 f"Stream: {stream}\n"
                 f"Tool choice: {tool_choice}\n"
                 f"Response format: {response_format}\n"
diff --git a/src/agents/models/openai_responses.py b/src/agents/models/openai_responses.py
index 86c8e69cb..a0e72d604 100644
--- a/src/agents/models/openai_responses.py
+++ b/src/agents/models/openai_responses.py
@@ -93,7 +93,13 @@ async def get_response(
                 else:
                     logger.debug(
                         "LLM resp:\n"
-                        f"{json.dumps([x.model_dump() for x in response.output], indent=2)}\n"
+                        f"""{
+                            json.dumps(
+                                [x.model_dump() for x in response.output],
+                                indent=2,
+                                ensure_ascii=False,
+                            )
+                        }\n"""
                     )
 
                 usage = (
@@ -237,8 +243,8 @@ async def _fetch_response(
         else:
             logger.debug(
                 f"Calling LLM {self.model} with input:\n"
-                f"{json.dumps(list_input, indent=2)}\n"
-                f"Tools:\n{json.dumps(converted_tools.tools, indent=2)}\n"
+                f"{json.dumps(list_input, indent=2, ensure_ascii=False)}\n"
+                f"Tools:\n{json.dumps(converted_tools.tools, indent=2, ensure_ascii=False)}\n"
                 f"Stream: {stream}\n"
                 f"Tool choice: {tool_choice}\n"
                 f"Response format: {response_format}\n"
diff --git a/src/agents/tool_context.py b/src/agents/tool_context.py
index 17b595f06..c4329b8af 100644
--- a/src/agents/tool_context.py
+++ b/src/agents/tool_context.py
@@ -7,6 +7,7 @@
 def _assert_must_pass_tool_call_id() -> str:
     raise ValueError("tool_call_id must be passed to ToolContext")
 
+
 @dataclass
 class ToolContext(RunContextWrapper[TContext]):
     """The context of a tool call."""