wehub-resource-sync
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52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
from collections.abc import AsyncIterator
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from contextlib import asynccontextmanager
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from dataclasses import dataclass
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from mcp_types import (
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CallToolRequestParams,
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CallToolResult,
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ListToolsResult,
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PaginatedRequestParams,
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TextContent,
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Tool,
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)
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from mcp.server import Server, ServerRequestContext
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@dataclass
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class Catalog:
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books: list[str]
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def search(self, query: str) -> list[str]:
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return [title for title in self.books if query.lower() in title.lower()]
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@asynccontextmanager
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async def lifespan(server: Server[Catalog]) -> AsyncIterator[Catalog]:
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yield Catalog(books=["Dune", "Dune Messiah", "Children of Dune"])
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SEARCH_BOOKS = Tool(
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name="search_books",
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description="Search the catalog by title or author.",
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input_schema={
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"type": "object",
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"properties": {"query": {"type": "string"}},
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"required": ["query"],
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},
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)
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async def list_tools(ctx: ServerRequestContext[Catalog], params: PaginatedRequestParams | None) -> ListToolsResult:
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return ListToolsResult(tools=[SEARCH_BOOKS])
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async def call_tool(ctx: ServerRequestContext[Catalog], params: CallToolRequestParams) -> CallToolResult:
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matches = ctx.lifespan_context.search((params.arguments or {})["query"])
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text = f"Found {len(matches)} books: {', '.join(matches)}."
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return CallToolResult(content=[TextContent(type="text", text=text)])
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server = Server("Bookshop", lifespan=lifespan, on_list_tools=list_tools, on_call_tool=call_tool)
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