R

Rubber Duck MCP

A rubber duck debugging tool MCP server for LLMs, including silent mode and interactive mode, to help developers organize their thoughts and debug code.
2 points
5

What is the Rubber Duck MCP Server?

The Rubber Duck MCP Server is a tool for helping large language models (LLMs) with code debugging. It simulates the classic 'rubber duck debugging method', allowing the model to discover and solve problems by explaining its code to a virtual 'rubber duck'.

How to use the Rubber Duck MCP Server?

Simply connect to the server and interact with it via the MCP protocol to start debugging. You can choose the traditional'silent rubber duck' mode or the fun'squeaky rubber duck' mode.

Applicable scenarios

The Rubber Duck MCP Server is very suitable for use when you need to organize your thoughts, check logic, or solve complex problems during the development process. In addition, it adds fun and makes the boring debugging process more enjoyable.

Main features

Silent rubber duckAllows you to send code to the server like you would to a traditional rubber duck and receive silent feedback.
Squeaky rubber duckAn interactive rubber duck that returns a fun'squeak' response when activated.

Advantages and limitations

Advantages
Helps organize code logic and quickly locate problems.
Improves development efficiency and reduces the time spent on trial and error.
Adds fun to programming and relieves work stress.
Supports multiple interaction methods to meet the preferences of different users.
Limitations
Requires the installation of specific environments and dependencies.
May not be suitable for beginners who have no knowledge of the MCP protocol.
Some advanced features may require further learning to fully utilize.

How to use

Install the server
Ensure that Python 3.10 or a higher version is installed, and run the installation command using the uv package manager.
Configure the client
Add the generated JSON configuration file to your MCP settings.
Start debugging
Connect to the server and enter your code to get feedback.

Usage examples

Example 1: Debugging a simple loopTry using the rubber duck to explain a simple for loop code.
Example 2: Solving logical errorsShow the rubber duck a piece of code with logical problems and observe its reaction.

Frequently Asked Questions

How to ensure that the Rubber Duck MCP Server runs properly?
Can the rubber duck really help me find errors in my code?
Where can I find more information about MCP?

Related resources

FastMCP GitHub
The FastMCP project homepage, which contains installation guides and usage tutorials.
Rubber Duck MCP Server source code
Open-source code repository to view implementation details.
Debugging tips sharing
Some practical debugging tips and experience sharing.
Installation
Copy the following command to your Client for configuration
{
    "mcpServers": {
      "rubber-duck": {
        "command": "uv",
        "args": [
          "run",
          "--with",
          "fastmcp",
          "fastmcp",
          "run",
          "<project root>/src/server.py"
        ]
      }
    }
}
Note: Your key is sensitive information, do not share it with anyone.
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