mcp-multi-tool-lab
A lightweight multi-provider MCP testing fixture with two providers (eva_air and uk_railway), each exposing 5 tools using in-memory fake data, designed for verifying MCP client tool discovery, tool calls, and multi-provider routing.
README
mcp-multi-tool-lab
一個輕量的多 provider MCP 測試資料/fixture:單一process掛載兩個 provider(eva_air 航空、uk_railway 鐵路),每個 provider 各暴露 5 個 MCP tool,資料全為記憶體內的假資料。設計目的是提供一個「MCP 後面有多個 tool」的可重複部署測試環境,方便驗證 MCP client 的 tool discovery、tool call 與多 provider 路由。
不含真實業務邏輯、資料庫或任何內部/機敏資料。
結構
agent.py # OpenAI Agents SDK 層:把兩個 provider 接成 Agent 的 mcp_servers
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
Provider 與 Tool 清單
| Provider slug | MCP URL | Tools |
|---|---|---|
eva_air |
http://localhost:8000/eva_air/mcp |
eva_air_search_flights、eva_air_create_provisional_booking、eva_air_pay_booking、eva_air_list_my_bookings、eva_air_dry_run_cancel |
uk_railway |
http://localhost:8000/uk_railway/mcp |
uk_railway_search_trains、uk_railway_create_provisional_booking、uk_railway_pay_booking、uk_railway_list_my_bookings、uk_railway_dry_run_cancel |
安裝與啟動
poetry install
poetry run python -m mcp_multi_tool_lab.server
伺服器預設監聽 http://localhost:8000。
連線方式
用 MCP client 連(建議)
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])
用 curl 連(了解底層原理)
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"}}}'
快速試用範例
eva_air_search_flights(origin="TPE", destination="NRT", date="2026-08-10")eva_air_create_provisional_booking(flight_id="BR001", passenger_name="Alice")eva_air_pay_booking(booking_id="EVA-0001")eva_air_dry_run_cancel(booking_id="EVA-0001")
uk_railway 系列 tool 用法相同,把 flight 換成 train 即可。
OpenAI Agents SDK 層
agent.py 用 openai-agents SDK 把兩個 provider 各接成一個 Agent:
| Agent | MCP server | Tools |
|---|---|---|
AirlineAgent |
eva_air(agents.mcp.MCPServerStreamableHttp 指向 /eva_air/mcp) |
format_itinerary + eva_air 的 5 個 MCP tool |
RailwayAgent |
uk_railway(指向 /uk_railway/mcp) |
format_itinerary + uk_railway 的 5 個 MCP tool |
跑之前記得先啟動 mcp_multi_tool_lab.server(見上方「安裝與啟動」),agent.py 才能連得到這兩個 MCP server。
注意事項
- 所有資料都是進程內記憶體儲存,重啟伺服器即清空,不適合當持久化測試。
- 這是獨立、通用的測試資料專案,跟任何內部產品或公司內部 repo 沒有從屬關係。
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