x64dbg MCP server

This plug-in enables x64dbg integration with the Model Context Protocol (MCP), allowing you to interact with the x64dbg debugger through Large Language Models. The server provides API endpoints to execute debugging commands and retrieve debugging information through the MCP interface.

Installation

Quick Setup

1. Download the .dp64 file from the build\release directory
2. Move the file to your x64dbg plugins directory: [x64dbg_installation_path]\release\x64\plugins
3. Get the x64dbgmcp.py file from the src directory and configure it with your Claude Desktop configuration
4. Start x64dbg, then launch Claude Desktop
5. Verify the plug-in loaded successfully by checking the logs (press ALT+L in x64dbg)

Building from Source

# Clone the repository
git clone [repository URL]

# Navigate to build directory
cd build

# Configure CMake
cmake .. -DBUILD_X64=ON 

# Build the plugin
cmake --build . --config Release

Usage

Supported Functions

The plugin currently supports a limited set of x64dbg SDK functions:

• DbgCmdExec - Execute debugger commands
• DbgIsActive - Check if the debugger is active
• GetModuleList - Retrieve a list of loaded modules
• FindMemBaseAddr - Find memory base addresses

Integration with Claude Desktop

After installation, you can interact with x64dbg through Claude or other LLMs supporting the Model Context Protocol. The MCP server provides an interface between the language model and the debugging environment.

Example Commands

You can execute debugging commands via the MCP interface. For example:

# Check if debugger is active
DbgIsActive()

# Execute a debugging command
DbgCmdExec("bp EntryPoint")

# Get module list
GetModuleList()

# Find memory base address
FindMemBaseAddr(0x140001000)

Limitations

• Currently only works with x64dbg (not x32dbg)
• Limited to four x64dbg SDK functions
• Additional functionality is planned for future releases

How to add this MCP server to 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 > MCP and click "Add new global MCP server".

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

{
    "mcpServers": {
        "cursor-rules-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "cursor-rules-mcp"
            ]
        }
    }
}

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 explictly ask the agent to use the tool by mentioning the tool name and describing what the function does.