community[patch],core[minor]: Move BaseToolKit to core.tools (#20669)

libs/core/langchain_core/tools.py

@@ -22,7 +22,7 @@ from __future__ import annotations
 import inspect
 import uuid
 import warnings
-from abc import abstractmethod
+from abc import ABC, abstractmethod
 from functools import partial
 from inspect import signature
 from typing import Any, Awaitable, Callable, Dict, List, Optional, Tuple, Type, Union
@@ -1038,3 +1038,11 @@ args: {"expression": {"type": "string"}}
         args_schema = str(tool.args)
         tool_strings.append(f"{tool.name}: {tool.description}, args: {args_schema}")
     return "\n".join(tool_strings)
+
+
+class BaseToolkit(BaseModel, ABC):
+    """Base Toolkit representing a collection of related tools."""
+
+    @abstractmethod
+    def get_tools(self) -> List[BaseTool]:
+        """Get the tools in the toolkit."""