Aibolit Java Code Analyzer MCP server

This MCP server integrates with AI coding assistants to help identify critical design issues in Java code using the Aibolit analyzer. It guides AI agents to focus on important code problems rather than just cosmetic issues when performing refactoring tasks.

Installation Requirements

Before using the MCP server, ensure you have the following dependencies installed:

• Node.js
• npm
• Python
• pip
• aibolit

Verifying Installation

After installing the dependencies, verify that Aibolit is correctly installed by running:

aibolit --version

Setting Up the MCP Server

Adding to Claude Code

To add the Aibolit MCP server to Claude Code, use the following command:

claude mcp add aibolit npx [email protected]

Alternatively, you can manually edit the ~/claude.json file, though this approach is not recommended.

Using with AI Assistant

After adding the MCP server, restart Claude Code. You can then prompt the AI assistant with requests such as:

"Find the most critical design issue in my code base and fix it."

The MCP server will analyze your Java code using Aibolit and identify the most critical design issues, which the AI assistant can then help resolve.

Usage Examples

When working with your AI coding assistant (Claude Code, Cursor, or Windsurf), the MCP server helps the assistant focus on substantive code issues rather than superficial improvements.

The typical workflow is:

1. Open your Java project in the AI-powered editor
2. Ask the assistant to improve or refactor your code
3. The MCP server analyzes your code using Aibolit
4. The server identifies critical design issues and communicates them to the AI agent
5. The AI agent then focuses on fixing these specific issues rather than making only cosmetic changes

This approach ensures that AI-assisted refactoring addresses meaningful design problems in your codebase.

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "aibolit" '{"command":"npx","args":["[email protected]"]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "aibolit": {
            "command": "npx",
            "args": [
                "[email protected]"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "aibolit": {
            "command": "npx",
            "args": [
                "[email protected]"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect