A
securityA
licenseA
qualityMCP server that builds itself by creating new tools as needed based on user requests (Requires restart of Claude Desktop to use newly created tools).
Last updated -
4
27
The Unlicense
Used for server configuration with environment variables. It appears in the debugging section where users need to update 'MCP_TRANSPORT_TYPE' in a .env file before starting the server.
The server is built on Python (version 3.10 or higher) and uses the FastMCP Python SDK to provide a dynamic MCP server implementation.
MCP-YNU - FastMCP Server
A dynamic MCP server implementation using FastMCP that automatically loads tools, resources, and prompts from respective directories.
Features
Dynamic loading of modules from
tools/,resources/, andprompts/directoriesAutomatic discovery and registration of modules
Simple configuration and extensibility
Type hints for better code clarity and static analysis
Comprehensive logging for monitoring server activity
Recent Updates
Added type hints throughout the codebase
Improved MCP instance handling
Added logging functionality
Added MIT license
Updated documentation with reference links
Directory Structure
mcp-ynu/
├── tools/ # Directory for tool modules
│ ├── __init__.py
│ ├── example.py
├── resources/ # Directory for resource modules
│ ├── __init__.py
│ ├── example.py
├── prompts/ # Directory for prompt modules
│ ├── __init__.py
│ ├── example.py
├── logger.py # Logger implementation
├── main.py # Main implementation
├── mcp_server.py # MCP server implementation
├── README.md # Project documentation
├── LICENSE # MIT License
└── pyproject.toml # Project configuration
Usage
Create modules in the appropriate directories
Import mcp via
from mcp_server import mcpRun the server:
python main.py
Example Modules
Tools Module Example (tools/example.py)
from mcp_server import mcp
import httpx
@mcp.tool()
def calculate_bmi(weight_kg: float, height_m: float) -> float:
"""Calculate BMI given weight in kg and height in meters"""
return weight_kg / (height_m**2)
@mcp.tool()
async def fetch_weather(city: str) -> str:
"""Fetch current weather for a city"""
async with httpx.AsyncClient() as client:
response = await client.get(f"https://api.weather.com/{city}")
return response.text
Resources Module Example (resources/example.py)
from mcp_server import mcp
@mcp.resource("config://app")
def get_config() -> str:
"""Static configuration data"""
return "App configuration here"
@mcp.resource("users://{user_id}/profile")
def get_user_profile(user_id: str) -> str:
"""Dynamic user data"""
return f"Profile data for user {user_id}"
Prompts Module Example (prompts/example.py)
from mcp_server import mcp
from mcp.server.fastmcp.prompts import base
@mcp.prompt()
def review_code(code: str) -> str:
return f"Please review this code:\n\n{code}"
@mcp.prompt()
def debug_error(error: str) -> list[base.Message]:
return [
base.UserMessage("I'm seeing this error:"),
base.UserMessage(error),
base.AssistantMessage("I'll help debug that. What have you tried so far?"),
]
Debugging
Update
MCP_TRANSPORT_TYPEin.env, Executepython main.pyto start the mcp serverExecute
npx @modelcontextprotocol/inspectorto open the inspect.Choose
SSETransport Type with URLhttp://localhost:<mcp_server_port>/sseor ChooseSTDIOTransport Type with Commandpythonand Arguments/path/to/main.py
Requirements
Python >= 3.10
FastMCP
Reference Links
License
This project is licensed under the MIT License - see the LICENSE file for details.
This server cannot be installed
hybrid server
The server is able to function both locally and remotely, depending on the configuration or use case.
A dynamic MCP server implementation that automatically loads tools, resources, and prompts from their respective directories, allowing for easy extension and configuration.
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