diff --git a/autogen/interop/crewai/crewai.py b/autogen/interop/crewai/crewai.py
index d6f2a608ba..1588ccd529 100644
--- a/autogen/interop/crewai/crewai.py
+++ b/autogen/interop/crewai/crewai.py
@@ -18,7 +18,7 @@ def _sanitize_name(s: str) -> str:
 
 
 @register_interoperable_class("crewai")
-class CrewAIInteroperability(Interoperable):
+class CrewAIInteroperability:
     """
     A class implementing the `Interoperable` protocol for converting CrewAI tools
     to a general `Tool` format.
diff --git a/autogen/interop/langchain/langchain.py b/autogen/interop/langchain/langchain.py
index 446617f7e2..3471e83203 100644
--- a/autogen/interop/langchain/langchain.py
+++ b/autogen/interop/langchain/langchain.py
@@ -13,7 +13,7 @@
 
 
 @register_interoperable_class("langchain")
-class LangChainInteroperability(Interoperable):
+class LangChainInteroperability:
     """
     A class implementing the `Interoperable` protocol for converting Langchain tools
     into a general `Tool` format.
diff --git a/autogen/interop/pydantic_ai/pydantic_ai.py b/autogen/interop/pydantic_ai/pydantic_ai.py
index fbb12e35b5..db2e22dd4b 100644
--- a/autogen/interop/pydantic_ai/pydantic_ai.py
+++ b/autogen/interop/pydantic_ai/pydantic_ai.py
@@ -9,15 +9,15 @@
 from inspect import signature
 from typing import Any, Callable, Optional
 
-from ...tools import PydanticAITool as AG2PydanticAITool
 from ..interoperability import Interoperable
 from ..registry import register_interoperable_class
+from .pydantic_ai_tool import PydanticAITool as AG2PydanticAITool
 
 __all__ = ["PydanticAIInteroperability"]
 
 
 @register_interoperable_class("pydanticai")
-class PydanticAIInteroperability(Interoperable):
+class PydanticAIInteroperability:
     """
     A class implementing the `Interoperable` protocol for converting Pydantic AI tools
     into a general `Tool` format.
diff --git a/autogen/tools/pydantic_ai_tool.py b/autogen/interop/pydantic_ai/pydantic_ai_tool.py
similarity index 96%
rename from autogen/tools/pydantic_ai_tool.py
rename to autogen/interop/pydantic_ai/pydantic_ai_tool.py
index a106cd4b70..629f65e7ad 100644
--- a/autogen/tools/pydantic_ai_tool.py
+++ b/autogen/interop/pydantic_ai/pydantic_ai_tool.py
@@ -4,9 +4,8 @@
 
 from typing import Any, Callable, Dict
 
-from autogen.agentchat.conversable_agent import ConversableAgent
-
-from .tool import Tool
+from ...agentchat.conversable_agent import ConversableAgent
+from ...tools import Tool
 
 __all__ = ["PydanticAITool"]
 
diff --git a/autogen/tools/__init__.py b/autogen/tools/__init__.py
index d787ae1a60..5902681ce0 100644
--- a/autogen/tools/__init__.py
+++ b/autogen/tools/__init__.py
@@ -1,4 +1,7 @@
-from .pydantic_ai_tool import PydanticAITool
+# Copyright (c) 2023 - 2024, Owners of https://github.com/ag2ai
+#
+# SPDX-License-Identifier: Apache-2.0
+
 from .tool import Tool
 
-__all__ = ["PydanticAITool", "Tool"]
+__all__ = ["Tool"]
diff --git a/autogen/tools/tool.py b/autogen/tools/tool.py
index 6e41238287..43914aa59c 100644
--- a/autogen/tools/tool.py
+++ b/autogen/tools/tool.py
@@ -2,10 +2,9 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-from typing import Any, Callable, Dict
-from unittest.mock import MagicMock
+from typing import Any, Callable
 
-from autogen.agentchat.conversable_agent import ConversableAgent
+from ..agentchat.conversable_agent import ConversableAgent
 
 __all__ = ["Tool"]
 
diff --git a/test/interop/pydantic_ai/test_pydantic_ai_tool.py b/test/interop/pydantic_ai/test_pydantic_ai_tool.py
new file mode 100644
index 0000000000..d6c1d942f9
--- /dev/null
+++ b/test/interop/pydantic_ai/test_pydantic_ai_tool.py
@@ -0,0 +1,74 @@
+# Copyright (c) 2023 - 2024, Owners of https://github.com/ag2ai
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import sys
+import unittest
+
+import pytest
+
+from autogen import AssistantAgent
+
+if sys.version_info >= (3, 9):
+    from pydantic_ai.tools import Tool
+
+    from autogen.interop.pydantic_ai.pydantic_ai_tool import PydanticAITool as AG2PydanticAITool
+else:
+    Tool = unittest.mock.MagicMock()
+    AG2PydanticAITool = unittest.mock.MagicMock()
+
+
+# skip if python version is not >= 3.9
+@pytest.mark.skipif(
+    sys.version_info < (3, 9), reason="Only Python 3.9 and above are supported for LangchainInteroperability"
+)
+class TestPydanticAITool:
+    def test_register_for_llm(self) -> None:
+        def foobar(a: int, b: str, c: dict[str, list[float]]) -> str:  # type: ignore[misc]
+            """Get me foobar.
+
+            Args:
+                a: apple pie
+                b: banana cake
+                c: carrot smoothie
+            """
+            return f"{a} {b} {c}"
+
+        tool = Tool(foobar)
+        ag2_tool = AG2PydanticAITool(
+            name=tool.name,
+            description=tool.description,
+            func=tool.function,
+            parameters_json_schema=tool._parameters_json_schema,
+        )
+        config_list = [{"model": "gpt-4o", "api_key": "abc"}]
+        chatbot = AssistantAgent(
+            name="chatbot",
+            llm_config={"config_list": config_list},
+        )
+        ag2_tool.register_for_llm(chatbot)
+        expected_tools = [
+            {
+                "type": "function",
+                "function": {
+                    "name": "foobar",
+                    "description": "Get me foobar.",
+                    "parameters": {
+                        "properties": {
+                            "a": {"description": "apple pie", "title": "A", "type": "integer"},
+                            "b": {"description": "banana cake", "title": "B", "type": "string"},
+                            "c": {
+                                "additionalProperties": {"items": {"type": "number"}, "type": "array"},
+                                "description": "carrot smoothie",
+                                "title": "C",
+                                "type": "object",
+                            },
+                        },
+                        "required": ["a", "b", "c"],
+                        "type": "object",
+                        "additionalProperties": False,
+                    },
+                },
+            }
+        ]
+        assert chatbot.llm_config["tools"] == expected_tools  # type: ignore[index]