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TST, Hongkong

MCP Server Gateway

Installation​

uv init
source .venv/bin/activate
uv add fastmcp
uv pip install --python .venv/bin/python terminal_mcp/agent_terminal_tools-0.1.0-py3-none-any.whl

Mounting more than one Server​

Now I am going to use the agent_terminal_tools and DuckDuckGo MCP Server and mount both of them to my server:

from typing import Dict
import os
from fastmcp import FastMCP
from fastmcp.server import create_proxy
from pydantic import BaseModel

mcp = FastMCP("My Server")

venv_path = os.path.join(
    os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))), ".venv"
)

class CustomerData(BaseModel):
    data: str
    id: int

@mcp.tool()
def fetch(customerID: int) -> CustomerData:
    '''Use this tool to fetch customer data'''
    # mock-api fetch request
    return CustomerData(data=f"Data retrieved for: ", id=customerID)

@mcp.tool()
def process(data: CustomerData) -> Dict:
    '''Use this tool to process customer data'''
    # mock-data processing
    return {"data": f"Data for {data.id} has been processed"}


mcp.mount(
    create_proxy({
        "mcpServers": {
            "data_fetch_mcp_stdio": {
                "transport": "stdio",
                "command": "uvx",
                "args": ["duckduckgo-mcp-server"],
                "env": {
                    "DDG_SAFE_SEARCH": "OFF",
                    "DDG_REGION": "cn-zh"
                }
            }
        }
    })
)


mcp.mount(
    create_proxy({
        "mcpServers": {
          "agent_terminal_tools": {
                "transport": "stdio",
                "command": os.path.join(venv_path, "bin", "python"),
                "args": [os.path.join(venv_path, "bin", "agent_terminal_tools")],
            }
        }
    })
)



if __name__ == "__main__":
    mcp.run(transport="streamable-http", host="127.0.0.1", port=8888)
 python mcp_gateway.py 


╭─────────────────────────────────────────────────────────╮
│                                                         │
│                                                         │
│              ▄▀▀ ▄▀█ █▀▀ ▀█▀ █▀▄▀█ █▀▀ █▀█              │
│              █▀  █▀█ ▄▄█  █  █ ▀ █ █▄▄ █▀▀              │
│                      FastMCP 4.1.0                      │
│                  https://gofastmcp.com                  │
│                                                         │
│       🖥  Server:      My Server, 4.1.0                 │
│       🚀 Deploy free: https://horizon.prefect.io        │
│                                                         │
╰─────────────────────────────────────────────────────────╯


[10/09/26 17:55:05] INFO     Starting MCP  transport.py:358
                             server 'My                    
                             Server' with                  
                             transport                     
                             'streamable-h                 
                             ttp' on                       
                             http://127.0.                 
                             0.1:8888/mcp                  
INFO:     Started server process [1247860]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://127.0.0.1:8888 (Press CTRL+C to quit)

Looking good! Now the MCP Inspector to make sure that all tools have been registered sucessfully:

npx @modelcontextprotocol/inspector

And there you go - all tools are accounted for:

MCP Inspector