GDB MCP Server

Multi-Debugger MCP Server (LLDB and GDB)

A Model Context Protocol server that provides debugging functionality for both GDB and LLDB debuggers, for use with Claude Desktop, VSCode Copilot, or other AI assistants.

Note that you can useuv runto run the server.py script or you can useuv venvto create a virtual environment and then run/home/youruser/dev/personal/GDB-MCP/.venv/bin/python /home/youruser/dev/personal/GDB-MCP/server.py.

Add to yourclaude_desktop_config.json:

{ "mcpServers": { "gdb": { "command": "uv", "args": ["run", "/home/youruser/dev/personal/GDB-MCP/server.py"], "disabled": false } } }

"mcp": { "servers": { "my-mcp-server-4dc36648": { "type": "stdio", "command": "wsl", "args": [ "/home/youruser/dev/personal/GDB-MCP/.venv/bin/python", "/home/youruser/dev/personal/GDB-MCP/server.py" ] } } }

"mcp": { "servers": { "my-mcp-server-db89eee1": { "type": "stdio", "command": "/home/youruser/dev/personal/GDB-MCP/.venv/bin/python", "args": ["/home/youruser/dev/personal/GDB-MCP/server.py"] } } }

{ "mcpServers": { "debugger-mcp": { "command": "python3", "args": ["/Users/youruser/dev/GDB-MCP/server.py"] } } }

This project includes experimental native LLDB support alongside GDB, with automatic debugger selection.

To enable LLDB support on macOS, install LLVM (which includes LLDB) and python via Homebrew:

# Install LLDB for supporting python3.14 bindings brew install llvm python3 # Install MCP and debugging dependencies pip3 install mcp pygdbmi --break-system-packages

- debugger_status(): Show available debuggers and their status
- debugger_start(): Start debugging session with auto-detected debugger
- debugger_terminate(session_id): Terminate debugging session
- debugger_list_sessions(): List all active debugging sessions
- debugger_command(session_id, command): Execute debugger command

- lldb_start(): Start new LLDB debugging session
- lldb_terminate(session_id): Terminate LLDB debugging session
- lldb_list_sessions(): List all active LLDB sessions
- lldb_command(session_id, command): Execute arbitrary LLDB command

- gdb_start(gdb_path): Start new GDB debugging session
- gdb_terminate(session_id): Terminate GDB debugging session
- gdb_list_sessions(): List all active GDB sessions
- gdb_command(session_id, command): Execute any GDB command

Use*_command()functions for all advanced debugger operations, your LLM client should already know how to use it, but it doesn't hurt to mention it.

from modules.lldb import LLDBSessionManager from modules.gdb import GDBSessionManager print("LLDB available:", LLDBSessionManager.is_available()) print("GDB available:", GDBSessionManager.is_available())

uv run python run-tests.py --check-deps uv run python run-tests.py --type all

Check theexamplesdirectory for example prompts.

Example binaries are compiled toarm64andamd64, pick the one that matches your system architecture.

This project is licensed under the GNU Version 3.0 License, see the LICENSE file for details.

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