About Custom-MCP-Server-Python
Custom-MCP-Server-Python is a Python socket-server demo for learning TCP communication and protocol design. It illustrates structured message handling and client connections, and serves as a starting point for custom networked applications.
Key features
- 01Python TCP server using sockets
- 02Structured message handling
- 03Client connection management
- 04Real-time client-server communication
- 05Extensible message types
Use cases
- 01Study TCP socket programming
- 02Prototype a custom message protocol
- 03Explore server architecture for networked applications
MCP support
The project calls its custom JSON-over-TCP format MCP, but the README describes a self-defined protocol rather than the Model Context Protocol. It demonstrates server-side parsing and responses to client messages.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
We haven’t collected a package or remote endpoint for this server. Follow the instructions in the project README.
Tools
Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.
Details
From the project README🧠 Custom MCP Server Demo
This project is a Custom MCP (Model Context Protocol) Server built using Python, It’s designed to demonstrate how to create a custom server that communicates using the Model Context Protocol (MCP) — a simple, custom-designed protocol useful for building flexible communication systems between clients and servers.
📌 What is this project about?
This project helps you understand how to:
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Build a custom server using Python's socket library
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Implement a custom protocol (MCP) to handle communication between clients and the server
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Manage client connections and message handling in a structured way
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Send and receive custom commands and data with context-aware processing
It is a learning base for creating more complex client-server systems, such as multiplayer games, chat applications, or custom networked tools.
🚀 Features
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🌐 TCP-based custom server built in Python
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🔄 Model Context Protocol: structured message handling
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📡 Real-time communication between client and server
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🧩 Easy to extend with new message types or functionalities
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🧪 Great for learning networking, protocol design, and server architecture
🔧 Requirements
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Python 3.8+
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Basic understanding of networking (sockets, TCP)
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No external dependencies required
🛠 How to Run
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Clone the repository:
git clone https://github.com/Eltaf-azizi/Custom-MCP-Server-Demo.git cd custom-mcp-server -
Run the server:
python server.py
💡 How the Protocol Works (MCP)
The Model Context Protocol is a custom-defined protocol where each message includes:
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A model: What kind of data is being sent (e.g., "chat", "move", "state")
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A context: Additional metadata to help interpret the model
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The data: The actual payload/message
Example message structure (as JSON over TCP):
{
"model": "chat",
"context": "user",
"data": "Hello, world!"
}
The server parses these messages and responds accordingly, making it easy to handle multiple types of client interactions in a clean and scalable way.
📚 Resources
Tech With Tim - Build Anything With a Custom MCP Server(https://www.youtube.com/watch?v=-8k9lGpGQ6g)
Python Socket Programming Docs(https://docs.python.org/3/library/socket.html)
🤝 Contributing
You can fix this project, improve it, or build something entirely new on top of it. PRs are welcome!
Happy Coding!
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.