fix(core): preserve ToolMessage.status field in convert_to_messages (#32840)

libs/core/langchain_core/messages/utils.py

@@ -286,6 +286,9 @@ def _create_message_from_message_type(
         message = FunctionMessage(content=content, **kwargs)
     elif message_type == "tool":
         artifact = kwargs.get("additional_kwargs", {}).pop("artifact", None)
+        status = kwargs.get("additional_kwargs", {}).pop("status", None)
+        if status is not None:
+            kwargs["status"] = status
         message = ToolMessage(content=content, artifact=artifact, **kwargs)
     elif message_type == "remove":
         message = RemoveMessage(**kwargs)

libs/core/tests/unit_tests/test_messages.py

@@ -740,6 +740,7 @@ def test_convert_to_messages() -> None:
                 "tool_call_id": "tool_id2",
                 "content": "Bye!",
                 "artifact": {"foo": 123},
+                "status": "success",
             },
             {"role": "remove", "id": "message_to_remove", "content": ""},
             {
@@ -773,7 +774,12 @@ def test_convert_to_messages() -> None:
             ],
         ),
         ToolMessage(tool_call_id="tool_id", content="Hi!"),
-        ToolMessage(tool_call_id="tool_id2", content="Bye!", artifact={"foo": 123}),
+        ToolMessage(
+            tool_call_id="tool_id2",
+            content="Bye!",
+            artifact={"foo": 123},
+            status="success",
+        ),
         RemoveMessage(id="message_to_remove"),
         HumanMessage(
             content="Now the turn for Larry to ask a question about the book!",