gdbmcp

GDB MCP server.

Overview

gdbmcp exposes GDB operations over the MCP (Model Context Protocol) using FastMCP. It manages GDB sessions over a socket connection (via gdbrpc) and provides MCP tools to connect, list, terminate sessions, and run GDB commands.

Related MCP server: dap-mcp

Features

• Start and manage multiple GDB sessions

• Execute arbitrary GDB commands through MCP

• Run as MCP stdio server or HTTP server

Requirements

• Python >= 3.10

• gdbrpc

• mcp

• HTTP mode only: uvicorn (required to run the HTTP server)

Installation

From PyPI:

pip install gdbmcp-server

From repo root:

pip install .

For development:

pip install -e .

Usage

Run MCP server (stdio)

python -m gdbmcp-server gdbmcp --stdio

Run MCP server (HTTP)

python -m gdbmcp-server

MCP Tools

gdb_connect(host: Optional[str] = None, port: Optional[int] = None) -> str

Establish a GDB session and returns a session ID.

gdb_terminate(session_id: str) -> str

Terminate an existing session and clean up resources.

gdb_list_sessions() -> str

List all active sessions and their host/port.

gdb_command(session_id: str, command: str) -> str

Execute a GDB command in the session and return output.

Configuration

CLI flags:

• --stdio : Run in stdio transport mode

• --port : HTTP server port (default: 20819)