Spec3 FAQs

Question 1

What is Spec3 and what does it do?

Accepted Answer

Spec3 is a Model Context Protocol (MCP) server built with FastMCP for local development and testing. It allows you to create and manage custom AI tools that can be accessed and utilized by Claude Desktop running on Windows, with the server itself operating within your Windows Subsystem for Linux (WSL) environment.

Question 2

How does Spec3 integrate with Claude Desktop?

Accepted Answer

Spec3 integrates by configuring Claude Desktop to launch the server as an external MCP provider via the `claude_desktop_config.json` file. This setup enables Claude Desktop to execute Spec3's tools, leveraging WSL for the server's execution while Claude runs on Windows.

Question 3

What are the main features of Spec3 for developers?

Accepted Answer

Spec3 offers FastMCP integration for efficient protocol handling, seamless WSL compatibility, a modern Python project structure with type hints, comprehensive logging for debugging, and includes utility tools like `hello_world` and `get_server_info` to get started quickly.

Question 4

Can I add my own custom tools to Spec3?

Accepted Answer

Absolutely. Spec3 is designed for extensibility. You can easily add new tools by defining Python functions within the `server.py` file, decorated with `@mcp.tool()`. This allows you to integrate custom logic and functionalities that Claude Desktop can then invoke.

Question 5

What are the prerequisites for running Spec3?

Accepted Answer

To run Spec3, you will need Python 3.10 or higher installed in your WSL environment, a functional WSL setup, and Claude Desktop installed on your Windows machine. The project uses standard Python packaging practices for easy installation.

Spec3

Spec3

Key Features

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Key Features

Use Cases