MCP server CX Codex

Gearsystem MCP Server — Claude Code MCP server: debugging

This MCP server connects an AI agent to Gearsystem for debugging Sega Master System, Game Gear, and SG-1000 games.

What Gearsystem MCP Server does

Gearsystem MCP Server is built into the Gearsystem emulator. It exposes tools for execution control, memory inspection, hardware status checks, rewind, and related debugging tasks. An AI agent can inspect a running game through MCP instead of relying on source code alone.

Gearsystem is a cross-platform C++ emulator for Sega Master System, Game Gear, SG-1000, and related systems. The MCP interface is intended for Claude Code, Codex, and similar environments. Use MCP_README.md in the project for MCPB connection steps. Linux may require libsdl3; Windows builds may need the Visual C++ Redistributable and OpenGL Compatibility Pack.

What it helps with

debug a game through emulator execution control
inspect memory while a game is running
check the emulated hardware state
rewind execution during an investigation

Example prompts for the agent

Connect Gearsystem MCP Server and inspect the emulator state while the game is running.
Pause execution and find the memory value that changes after the player takes damage.
Use Gearsystem to trace a jump to an address and explain the related memory changes.

How to install Gearsystem MCP Server

Install

The MCP registry has no launch command for it: see the repository README

Step by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more

Questions about Gearsystem MCP Server

How do I install Gearsystem MCP Server in Claude Code?

Use the MCPB package from Gearsystem and follow the connection steps in MCP_README.md.

What does Gearsystem MCP Server do?

It connects an AI agent to the Gearsystem emulator and exposes tools for execution control, memory inspection, hardware status, and rewind.

Which systems does Gearsystem emulate?

Gearsystem supports Sega Mark III, Sega Master System, Sega Game Gear, Sega Game 1000 (SG-1000), and Othello Multivision.

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