wehub-resource-sync
49b9bb6724
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60 lines
1.7 KiB
Python
60 lines
1.7 KiB
Python
from collections.abc import Sequence
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from typing import Any, Literal
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import mcp_types as types
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from pydantic import Field
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from mcp import Client
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from mcp.client import advertise
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from mcp.server.context import ServerRequestContext
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from mcp.server.extension import Extension, MethodBinding
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from mcp.server.mcpserver import MCPServer, require_client_extension
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EXTENSION_ID = "com.example/search"
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class SearchParams(types.RequestParams):
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query: str
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limit: int = Field(default=10, ge=1, le=100)
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class SearchResult(types.Result):
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items: list[str]
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class SearchRequest(types.Request[SearchParams, Literal["com.example/search"]]):
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method: Literal["com.example/search"] = "com.example/search"
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params: SearchParams
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async def search(ctx: ServerRequestContext[Any, Any], params: SearchParams) -> SearchResult:
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require_client_extension(ctx, EXTENSION_ID)
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return SearchResult(items=[f"{params.query}-{n}" for n in range(params.limit)])
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class Search(Extension):
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"""An extension that serves its own request method."""
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identifier = EXTENSION_ID
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def methods(self) -> Sequence[MethodBinding]:
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return [
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MethodBinding(
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"com.example/search",
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SearchParams,
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search,
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protocol_versions=frozenset({"2026-07-28"}),
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)
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]
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mcp = MCPServer("catalog", extensions=[Search()])
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async def main() -> None:
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async with Client(mcp, extensions=[advertise(EXTENSION_ID)]) as client:
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request = SearchRequest(params=SearchParams(query="mcp", limit=3))
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result = await client.session.send_request(request, SearchResult)
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print(result.items)
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# ['mcp-0', 'mcp-1', 'mcp-2']
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