wehub-resource-sync
49b9bb6724
Deploy Docs / deploy-docs (push) Failing after 1s
Conformance Tests / client-conformance (push) Failing after 3s
Conformance Tests / server-conformance (push) Failing after 1s
GitHub Actions Security Analysis / zizmor (push) Failing after 1s
CI / checks (push) Failing after 59m20s
CI / all-green (push) Waiting to run
54 lines
2.0 KiB
Python
54 lines
2.0 KiB
Python
"""Discover an extension's capability entry, call its tool, then send its vendor method."""
|
|
|
|
from typing import Literal
|
|
|
|
import mcp_types as types
|
|
from mcp_types import TextContent
|
|
|
|
from mcp.client import Client, advertise
|
|
from stories._harness import Target, run_client
|
|
|
|
EXTENSION_ID = "com.example/catalog"
|
|
|
|
|
|
class SearchParams(types.RequestParams):
|
|
query: str
|
|
limit: int = 3
|
|
|
|
|
|
class SearchRequest(types.Request[SearchParams, Literal["com.example/search"]]):
|
|
method: Literal["com.example/search"] = "com.example/search"
|
|
params: SearchParams
|
|
|
|
|
|
class SearchResult(types.Result):
|
|
items: list[str]
|
|
|
|
|
|
async def main(target: Target, *, mode: str = "auto") -> None:
|
|
# Declare the extension client-side so the server's `require_client_extension`
|
|
# gate on `com.example/search` passes.
|
|
async with Client(target, mode=mode, extensions=[advertise(EXTENSION_ID)]) as client:
|
|
# The extensions capability map rides `server/discover` (modern only). On a
|
|
# legacy connection it is absent, so assert it only when present.
|
|
if client.server_capabilities.extensions is not None:
|
|
assert client.server_capabilities.extensions == {EXTENSION_ID: {"suggest": True}}, (
|
|
client.server_capabilities.extensions
|
|
)
|
|
|
|
# The extension's tool is a regular tool: listed and callable like any other.
|
|
listed = await client.list_tools()
|
|
assert [tool.name for tool in listed.tools] == ["suggest"], listed
|
|
result = await client.call_tool("suggest", {"prefix": "mcp"})
|
|
assert isinstance(result.content[0], TextContent)
|
|
assert result.content[0].text == "mcp-suggestion", result.content[0].text
|
|
|
|
# Vendor methods drop one layer to `client.session` (see custom_methods/).
|
|
request = SearchRequest(params=SearchParams(query="mcp", limit=3))
|
|
found = await client.session.send_request(request, SearchResult)
|
|
assert found.items == ["mcp-0", "mcp-1", "mcp-2"], found
|
|
|
|
|
|
if __name__ == "__main__":
|
|
run_client(main)
|