How to call the fastapi api in the sub-server from client side?

[nightowl54321]

from fastapi import FastAPI
from fastmcp import FastMCP

fastapi_app = FastAPI(title="sub fast api")

@fastapi_app.post("/items")
def create_item(name: str, price: float):
return {"id": 1, "name": name, "price": price}

Generate an sub MCP server directly from the FastAPI app

sub_mcp_server = FastMCP.from_fastapi(fastapi_app)

Generate an main MCP server

main_mcp_server = FastMCP(name="MAINSERVER")

main_mcp_server .mount("sub", sub_mcp_server )

if name == "main":
import asyncio
asyncio.run(main_mcp_server.run_sse_async(host="localhost", port=8080, log_level="debug"))

=========client========

client = Client(SSETransport(url="http://localhost:8001/sse"))

how to call the fastapi api in the sub-server?

async def call_auth_test(client: Client) -> list:
response = await client.call_tool(
"items" # what is the correct api name? list_tools does not show this fastapi api.
)