FastAPI MCP Demo Server

FastAPI MCP Demo Server

A demonstration MCP server built with FastAPI that provides basic mathematical operations and greeting services. Integrates with Gemini CLI to showcase MCP protocol implementation with simple REST endpoints.

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README

MCP Server using FAST MCP

This is a sample MCP Server built using FastAPI and integrated with Gemini CLI.

Repository: git@github.com:MAIMOONA-ISLAM/MCP-Server-using-FAST-MCP.git

Features

  • FastAPI Web Server with REST endpoints
  • MCP Protocol Server for Gemini CLI integration
  • Mathematical Operations (sum calculation)
  • Greeting Service (personalized greetings)

Project Structure

mcp_fastapi_server/ .gemini/ settings.json # Gemini settings demo/ README.md # Demo documentation screen_recording(1).mp4 # Demo video __pycache__/ # Python cache files .gitattributes # Git attributes .gitignore # Git ignore rules main.py # FastAPI web server mcp_config.json # Gemini CLI configuration README.md # This file requirements.txt # Python dependencies simple_mcp_server.py # Simple MCP protocol server

Setup Instructions

1. Install Dependencies

ash pip install -r requirements.txt

2. Run FastAPI Server

ash uvicorn main:app --reload --port 8000

The server will be available at: http://localhost:8000

API Documentation: http://localhost:8000/docs

3. Test MCP Server

ash python simple_mcp_server.py

4. Configure Gemini CLI

Copy the mcp_config.json to your Gemini CLI configuration directory:

`ash

On Windows

copy mcp_config.json %APPDATA%\gemini\mcp_config.json

On macOS/Linux

cp mcp_config.json ~/.config/gemini/mcp_config.json `

Available Endpoints

FastAPI Endpoints

  • GET / - Server status
  • POST /sum - Calculate sum of two numbers
  • POST /greet - Generate greeting message

MCP Tools

  • calculate_sum - Calculate sum of two numbers
  • greet_user - Generate personalized greeting

Usage Examples

FastAPI Usage

`ash

Test sum endpoint

curl -X POST "http://localhost:8000/sum"
-H "Content-Type: application/json"
-d '{"a": 5, "b": 3}'

Test greet endpoint

curl -X POST "http://localhost:8000/greet"
-H "Content-Type: application/json"
-d '{"name": "World"}' `

Gemini CLI Usage

`ash

List available MCP tools

gemini mcp list

Use MCP tools

gemini mcp call calculate_sum --a 5 --b 3 gemini mcp call greet_user --name "Alice" `

Demo

Check out the demo/ folder for:

  • Screen recording demonstrating the MCP server in action
  • Additional demo documentation
  • Examples of server setup and Gemini CLI MCP commands

Requirements

See requirements.txt for the full list of Python dependencies.

License

This project is open source and available for educational purposes.

Contributing

Feel free to submit issues and enhancement requests!

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