fastmcp-mcp-client-server-todo-manager

Build a real MCP client and server in Python with FastMCP (Todo Manager example)

This folder contains the code that accompanies the article:

• Article: https://www.thepythoncode.com/article/fastmcp-mcp-client-server-todo-manager

What’s included

• todo_server.py: FastMCP MCP server exposing tools, resources, and a prompt for a Todo Manager.
• todo_client_test.py: A small client script that connects to the server and exercises all features.
• requirements.txt: Python dependencies for this tutorial.

Quick start

1. Install requirements

python -m venv .venv && source .venv/bin/activate  # or use your preferred env manager
pip install -r requirements.txt

2. Run the server (stdio transport by default)

python todo_server.py

3. In a separate terminal, run the client

python todo_client_test.py

Optional: run the server over HTTP

• In todo_server.py, replace the last line with:

mcp.run(transport="http", host="127.0.0.1", port=8000)

• Then change the client constructor to Client("http://127.0.0.1:8000/mcp").

Notes

• Requires Python 3.10+.
• The example uses in-memory storage for simplicity.
• For production tips (HTTPS, auth, containerization), see the article.