mcp_multi_tool_lab/
  server.py              # 用 Starlette 把兩個 provider 掛在 /<slug>/mcp 底下
  providers/
    eva_air.py            # 航空 provider：5 個 tool + 記憶體假資料
    uk_railway.py          # 鐵路 provider：5 個 tool + 記憶體假資料

poetry install
poetry run python -m mcp_multi_tool_lab.server

from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client

async with streamablehttp_client("http://localhost:8000/eva_air/mcp") as (read, write, _):
    async with ClientSession(read, write) as session:
        await session.initialize()
        tools = await session.list_tools()
        print([t.name for t in tools.tools])

curl -N http://localhost:8000/eva_air/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"curl","version":"0"}}}'