From 9b4ef2ab34bdb6f2313bef3f8ee25202eb089ef2 Mon Sep 17 00:00:00 2001
From: ccurme <chester.curme@gmail.com>
Date: Sun, 9 Aug 2026 12:21:09 -0400
Subject: [PATCH] fix(openai): filter invalid tool calls from content (#39366)

---
 .../langchain_openai/chat_models/_compat.py   |  2 +-
 .../tests/unit_tests/chat_models/test_base.py | 26 +++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/libs/partners/openai/langchain_openai/chat_models/_compat.py b/libs/partners/openai/langchain_openai/chat_models/_compat.py
index cc04a9235f..d64c854ad7 100644
--- a/libs/partners/openai/langchain_openai/chat_models/_compat.py
+++ b/libs/partners/openai/langchain_openai/chat_models/_compat.py
@@ -165,7 +165,7 @@ def _convert_from_v1_to_chat_completions(message: AIMessage) -> AIMessage:
                 if block_type == "text":
                     # Strip annotations
                     new_content.append({"type": "text", "text": block["text"]})
-                elif block_type in ("reasoning", "tool_call"):
+                elif block_type in ("reasoning", "tool_call", "invalid_tool_call"):
                     pass
                 else:
                     new_content.append(block)
diff --git a/libs/partners/openai/tests/unit_tests/chat_models/test_base.py b/libs/partners/openai/tests/unit_tests/chat_models/test_base.py
index 5c54c458e6..3cc4474ccc 100644
--- a/libs/partners/openai/tests/unit_tests/chat_models/test_base.py
+++ b/libs/partners/openai/tests/unit_tests/chat_models/test_base.py
@@ -3643,6 +3643,13 @@ def test_compat_responses_v03_apply_patch_tool_outputs() -> None:
                         "name": "get_weather",
                         "args": {"location": "San Francisco"},
                     },
+                    {
+                        "type": "invalid_tool_call",
+                        "id": "call_234",
+                        "name": "get_weather",
+                        "args": '{"location":',
+                        "error": "Failed to parse tool call arguments as JSON",
+                    },
                     {
                         "type": "text",
                         "text": "Hello, world!",
@@ -3653,11 +3660,29 @@ def test_compat_responses_v03_apply_patch_tool_outputs() -> None:
                 ],
                 id="chatcmpl-123",
                 response_metadata={"model_provider": "openai", "model_name": "gpt-4.1"},
+                invalid_tool_calls=[
+                    InvalidToolCall(
+                        id="call_234",
+                        name="get_weather",
+                        args='{"location":',
+                        error="Failed to parse tool call arguments as JSON",
+                        type="invalid_tool_call",
+                    )
+                ],
             ),
             AIMessage(
                 [{"type": "text", "text": "Hello, world!"}],
                 id="chatcmpl-123",
                 response_metadata={"model_provider": "openai", "model_name": "gpt-4.1"},
+                invalid_tool_calls=[
+                    InvalidToolCall(
+                        id="call_234",
+                        name="get_weather",
+                        args='{"location":',
+                        error="Failed to parse tool call arguments as JSON",
+                        type="invalid_tool_call",
+                    )
+                ],
             ),
         )
     ],
@@ -3668,6 +3693,7 @@ def test_convert_from_v1_to_chat_completions(
     result = _convert_from_v1_to_chat_completions(message_v1)
     assert result == expected
     assert result.tool_calls == message_v1.tool_calls  # tool calls remain cached
+    assert result.invalid_tool_calls == message_v1.invalid_tool_calls
 
     # Check no mutation
     assert message_v1 != result