diff --git a/libs/core/langchain_core/tools/base.py b/libs/core/langchain_core/tools/base.py
index c5236ce743f77..aed5d845a6dec 100644
--- a/libs/core/langchain_core/tools/base.py
+++ b/libs/core/langchain_core/tools/base.py
@@ -362,7 +362,7 @@ def args(self) -> dict:
     def tool_call_schema(self) -> Type[BaseModel]:
         full_schema = self.get_input_schema()
         fields = []
-        for name, type_ in _get_all_basemodel_annotations(full_schema).items():
+        for name, type_ in get_all_basemodel_annotations(full_schema).items():
             if not _is_injected_arg_type(type_):
                 fields.append(name)
         return _create_subset_model(
@@ -858,7 +858,7 @@ def _is_injected_arg_type(type_: Type) -> bool:
     )
 
 
-def _get_all_basemodel_annotations(
+def get_all_basemodel_annotations(
     cls: Union[TypeBaseModel, Any], *, default_to_bound: bool = True
 ) -> Dict[str, Type]:
     # cls has no subscript: cls = FooBar
@@ -876,7 +876,7 @@ def _get_all_basemodel_annotations(
         orig_bases: Tuple = getattr(cls, "__orig_bases__", tuple())
     # cls has subscript: cls = FooBar[int]
     else:
-        annotations = _get_all_basemodel_annotations(
+        annotations = get_all_basemodel_annotations(
             get_origin(cls), default_to_bound=False
         )
         orig_bases = (cls,)
@@ -890,7 +890,7 @@ def _get_all_basemodel_annotations(
             # if class = FooBar inherits from Baz, parent = Baz
             if isinstance(parent, type) and is_pydantic_v1_subclass(parent):
                 annotations.update(
-                    _get_all_basemodel_annotations(parent, default_to_bound=False)
+                    get_all_basemodel_annotations(parent, default_to_bound=False)
                 )
                 continue
 
diff --git a/libs/core/tests/unit_tests/test_tools.py b/libs/core/tests/unit_tests/test_tools.py
index 39cf811fc5e1c..68066b14742cd 100644
--- a/libs/core/tests/unit_tests/test_tools.py
+++ b/libs/core/tests/unit_tests/test_tools.py
@@ -48,9 +48,9 @@
 from langchain_core.tools.base import (
     InjectedToolArg,
     SchemaAnnotationError,
-    _get_all_basemodel_annotations,
     _is_message_content_block,
     _is_message_content_type,
+    get_all_basemodel_annotations,
 )
 from langchain_core.utils.function_calling import convert_to_openai_function
 from langchain_core.utils.pydantic import PYDANTIC_MAJOR_VERSION, _create_subset_model
@@ -1773,19 +1773,19 @@ class ModelC(Mixin, ModelB):
         c: dict
 
     expected = {"a": str, "b": Annotated[ModelA[Dict[str, Any]], "foo"], "c": dict}
-    actual = _get_all_basemodel_annotations(ModelC)
+    actual = get_all_basemodel_annotations(ModelC)
     assert actual == expected
 
     expected = {"a": str, "b": Annotated[ModelA[Dict[str, Any]], "foo"]}
-    actual = _get_all_basemodel_annotations(ModelB)
+    actual = get_all_basemodel_annotations(ModelB)
     assert actual == expected
 
     expected = {"a": Any}
-    actual = _get_all_basemodel_annotations(ModelA)
+    actual = get_all_basemodel_annotations(ModelA)
     assert actual == expected
 
     expected = {"a": int}
-    actual = _get_all_basemodel_annotations(ModelA[int])
+    actual = get_all_basemodel_annotations(ModelA[int])
     assert actual == expected
 
     D = TypeVar("D", bound=Union[str, int])
@@ -1799,7 +1799,7 @@ class ModelD(ModelC, Generic[D]):
         "c": dict,
         "d": Union[str, int, None],
     }
-    actual = _get_all_basemodel_annotations(ModelD)
+    actual = get_all_basemodel_annotations(ModelD)
     assert actual == expected
 
     expected = {
@@ -1808,7 +1808,7 @@ class ModelD(ModelC, Generic[D]):
         "c": dict,
         "d": Union[int, None],
     }
-    actual = _get_all_basemodel_annotations(ModelD[int])
+    actual = get_all_basemodel_annotations(ModelD[int])
     assert actual == expected
 
 
@@ -1830,19 +1830,19 @@ class ModelC(Mixin, ModelB):
         c: dict
 
     expected = {"a": str, "b": Annotated[ModelA[Dict[str, Any]], "foo"], "c": dict}
-    actual = _get_all_basemodel_annotations(ModelC)
+    actual = get_all_basemodel_annotations(ModelC)
     assert actual == expected
 
     expected = {"a": str, "b": Annotated[ModelA[Dict[str, Any]], "foo"]}
-    actual = _get_all_basemodel_annotations(ModelB)
+    actual = get_all_basemodel_annotations(ModelB)
     assert actual == expected
 
     expected = {"a": Any}
-    actual = _get_all_basemodel_annotations(ModelA)
+    actual = get_all_basemodel_annotations(ModelA)
     assert actual == expected
 
     expected = {"a": int}
-    actual = _get_all_basemodel_annotations(ModelA[int])
+    actual = get_all_basemodel_annotations(ModelA[int])
     assert actual == expected
 
     D = TypeVar("D", bound=Union[str, int])
@@ -1856,7 +1856,7 @@ class ModelD(ModelC, Generic[D]):
         "c": dict,
         "d": Union[str, int, None],
     }
-    actual = _get_all_basemodel_annotations(ModelD)
+    actual = get_all_basemodel_annotations(ModelD)
     assert actual == expected
 
     expected = {
@@ -1865,7 +1865,7 @@ class ModelD(ModelC, Generic[D]):
         "c": dict,
         "d": Union[int, None],
     }
-    actual = _get_all_basemodel_annotations(ModelD[int])
+    actual = get_all_basemodel_annotations(ModelD[int])
     assert actual == expected