wehub-resource-sync
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43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
from typing import Annotated
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from mcp_types import ElicitRequestParams, ElicitResult
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from pydantic import BaseModel
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from mcp import Client
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from mcp.client import ClientRequestContext
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from mcp.server import MCPServer
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from mcp.server.mcpserver import AcceptedElicitation, Elicit, ElicitationResult, Resolve
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mcp = MCPServer("Bookshop")
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class Quantity(BaseModel):
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copies: int
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async def ask_quantity() -> Elicit[Quantity]:
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"""Resolver: ask the user how many copies to put aside."""
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return Elicit("How many copies?", Quantity)
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@mcp.tool()
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async def reserve(title: str, quantity: Annotated[ElicitationResult[Quantity], Resolve(ask_quantity)]) -> str:
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"""Reserve copies of a book, asking the user how many."""
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if isinstance(quantity, AcceptedElicitation):
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return f"Reserved {quantity.data.copies} of {title!r}."
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return "Nothing reserved."
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async def answer(context: ClientRequestContext, params: ElicitRequestParams) -> ElicitResult:
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return ElicitResult(action="accept", content={"copies": 2})
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async def main() -> None:
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async with (
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Client(mcp, mode="legacy", elicitation_callback=answer) as legacy,
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Client(mcp, elicitation_callback=answer) as modern,
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):
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for client in (legacy, modern):
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result = await client.call_tool("reserve", {"title": "Dune"})
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print(client.protocol_version, result.structured_content)
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