MCP Wikipedia Server

from abc import ABC, abstractmethod from inspect import isclass from typing import ( Any, Generic, TypeVar, ) from typing_extensions import TypeGuard from langgraph.pregel._scratchpad import PregelScratchpad V = TypeVar("V") U = TypeVar("U") __all__ = ("ManagedValueSpec", "ManagedValueMapping") class ManagedValue(ABC, Generic[V]): @staticmethod @abstractmethod def get(scratchpad: PregelScratchpad) -> V: ... ManagedValueSpec = type[ManagedValue] def is_managed_value(value: Any) -> TypeGuard[ManagedValueSpec]: return isclass(value) and issubclass(value, ManagedValue) ManagedValueMapping = dict[str, ManagedValueSpec]