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Add a client extension API (#3034)

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Max 2026-06-30 21:31:02 +01:00 • committed by GitHub
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7
docs_src/extensions/tutorial004.py
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@ -1,10 +1,11 @@
from collections.abc import Sequence
from typing import Any, Literal, cast
from typing import Any, Literal
import mcp_types as types
from pydantic import Field
from mcp import Client
from mcp.client import advertise
from mcp.server.context import ServerRequestContext
from mcp.server.extension import Extension, MethodBinding
from mcp.server.mcpserver import MCPServer, require_client_extension
@ -51,8 +52,8 @@ mcp = MCPServer("catalog", extensions=[Search()])
async def main() -> None:
async with Client(mcp, extensions={EXTENSION_ID: {}}) as client:
async with Client(mcp, extensions=[advertise(EXTENSION_ID)]) as client:
request = SearchRequest(params=SearchParams(query="mcp", limit=3))
result = await client.session.send_request(cast("types.ClientRequest", request), SearchResult)
result = await client.session.send_request(request, SearchResult)
print(result.items)
# ['mcp-0', 'mcp-1', 'mcp-2']