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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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5
tests/docs_src/test_apps.py
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@ -7,6 +7,7 @@ from mcp_types import TextContent, TextResourceContents
from docs_src.apps import tutorial001, tutorial002, tutorial003
from mcp import Client
from mcp.client import advertise
from mcp.server.apps import APP_MIME_TYPE, EXTENSION_ID
# See test_index.py for why this is a per-module mark and not a conftest hook.
@ -34,7 +35,9 @@ async def test_the_ui_resource_is_served_as_the_app_mime_type() -> None:
async def test_one_tool_two_answers() -> None:
"""tutorial001: the canonical degradation pattern: raw data for a client that
negotiated Apps, a human sentence for one that did not."""
async with Client(tutorial001.mcp, extensions={EXTENSION_ID: {"mimeTypes": [APP_MIME_TYPE]}}) as ui_client:
async with Client(
tutorial001.mcp, extensions=[advertise(EXTENSION_ID, {"mimeTypes": [APP_MIME_TYPE]})]
) as ui_client:
rich = await ui_client.call_tool("get_time", {})
async with Client(tutorial001.mcp) as text_client:
plain = await text_client.call_tool("get_time", {})