Extend AI Toolkit MCP Server

from typing import Protocol from typing_extensions import TypeVar from .api import ExtendAPI from .tools import Tool ToolType = TypeVar("ToolType", covariant=True) AgentToolType = TypeVar("AgentToolType", bound="AgentToolInterface[ToolType]") class AgentToolInterface(Protocol[ToolType]): def __init__(self, extend_api: ExtendAPI, tool: Tool) -> None: ... def build_tool(self) -> ToolType: ...