x64dbg MCP server

The x64dbgmcp plugin provides a Model Context Protocol server for x64dbg, enabling you to control the debugger using natural language commands through compatible LLM interfaces. This powerful integration allows direct access to debugging functionality, memory manipulation, and code analysis through conversational AI.

Installation

Plugin Installation

1. Download the plugin file appropriate for your version:

   • .dp64 for 64-bit x64dbg
   • .dp32 for 32-bit x86dbg

2. Copy the downloaded file to your x64dbg plugins directory:

   [x64dbg_installation_directory]/release/x64/plugins/
   

Configure Claude Desktop

To use with Claude Desktop:

1. Copy the x64dbgmcp.py file from the source directory
2. Update your claude_desktop_config.json with the path to the Python script:

{
  "mcpServers": {
    "x64dbg": {
      "command": "Path\\To\\Python",
      "args": [
        "Path\\to\\x64dbg.py"
      ]
    }
  }
}

Verify Installation

1. Launch x64dbg
2. Start Claude Desktop
3. Check if the plugin loaded successfully by pressing ALT+L in x64dbg to view logs

Using x64dbgmcp

Available Commands

The plugin provides access to over 40 x64dbg functions through natural language. Here are some key function categories:

Core Debug Control

• Execute any x64dbg command
• Check debugger status
• Verify if a process is being debugged

Register Operations

• Read and write CPU registers

Memory Management

• Read and write process memory
• Validate memory addresses
• Check memory protection
• Find module base addresses

Debug Control

• Run, pause, and stop execution
• Step through code (step in, over, out)
• Set and delete breakpoints

Assembly & Disassembly

• Assemble instructions
• Disassemble code
• Get current instruction

Stack Operations

• Pop, push, and peek stack values

Usage Examples

You can interact with the debugger using natural language commands. Here are some examples:

Setting breakpoints:

Set a breakpoint at the main function and step through the first few instructions

Analyzing memory:

Read 100 bytes from address 0x401000 and show me what's there

Inspecting registers:

What's the current value of RAX and RIP registers?

Finding patterns:

Find the pattern '48 8B 05' in the current module

Typical Workflow

1. Launch x64dbg and load your target program
2. Start Claude Desktop (or another compatible LLM client)
3. Begin debugging by issuing natural language commands
4. Use the LLM to analyze code, set breakpoints, and examine memory/registers
5. Continue the debugging session with conversational guidance

With x64dbgmcp, you can seamlessly combine the power of language models with x64dbg's debugging capabilities for more intuitive and efficient reverse engineering.

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 "x64dbg" '{"command":"Path\\To\\Python","args":["Path\\to\\x64dbg.py"]}'

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": {
        "x64dbg": {
            "command": "Path\\To\\Python",
            "args": [
                "Path\\to\\x64dbg.py"
            ]
        }
    }
}

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": {
        "x64dbg": {
            "command": "Path\\To\\Python",
            "args": [
                "Path\\to\\x64dbg.py"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect