Demo MCP Server

Demo MCP Server

A simple demonstration MCP server that provides basic utility tools including dice rolling and number addition functionality. This server serves as a tutorial example for setting up both local and remote MCP servers using FastMCP.

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README

Basic Setup

  • Install uv
  • Create a project folder named fastmcp-demo-server
  • Open the folder in VS Code
  • Open terminal
  • Execute the command: uv init
  • uv add fastmcp
  • Fastmcp version
  • Create a basic server
  • Test the server -uv run fastmcp dev main.py (MCP Inspector CMD)
  • Run the server -uv run fastmcp run main.py
  • Add the server to claude desktop - uv run fastmcp install claude-desktop main.py (For local server)

<i>Use the same steps from above to create a Remote MCP Server and follow the below steps and for Local MCP Server just follow till the upper step.</i>

  • Test the server using MCP Inspector | This opens in browser just like FastAPI's page
  • Create a GitHub repo
  • git init
  • git add
  • git commit -m "Initial commit: Simple MCP Server"
  • git remote add origin https://github.com/YourUsername/simple-mcp-server.git
  • git push -u origin main
  • Create an account on FastMCP Cloud
  • Deploy on FastMCP Cloud
import random
from fastmcp import FastMCP

# Create a FastMCP server instance
mcp = FastMCP(name="Demo Server")

@mcp.tool
def roll_dice(n_dice: int=1) -> list[int]:
    """Roll n_dice 6 sided dice and return the results."""
    return [random.randint(1,6) for _ in range(n_dice)]

@mcp.toll
def add_numbers(a: float, b: float) -> float:
    """Add two numbers together."""
    return a + b

if __name___ == "__main__":
    mcp.run()

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