MesenCE Claude Code Plugin

Claude Code plugin for MesenCE multi-system emulator MCP integration.

Provides MCP server configuration and reference skills for MesenCE's built-in MCP server, enabling runtime debugging, memory inspection, disassembly, tracing, ROM hacking, text search, and more -- 57 MCP tools for NES, SNES, Game Boy, GBA, PC Engine, SMS/Game Gear, and WonderSwan reverse engineering.

Installation

Install from the Claude Code plugin marketplace:

/plugin marketplace add sadnescity/claude-plugins
/plugin install mesence@sadnescity-plugins

Prerequisites

• MesenCE with MCP server support
• MCP server enabled in MesenCE:
  • GUI: Tools > MCP Server Config
  • Or CLI: --mcp flag (with optional --mcp-port=PORT)
• Default port: 9100

What's Included

MCP Server Configuration (.mcp.json)

Connects Claude Code to MesenCE's built-in MCP server via Streamable HTTP on localhost:9100.

Skills

Skill	Description
mesen-setup	MCP server setup, configuration, and troubleshooting
mesen-debug-execution	CPU debugging: stepping, breakpoints, state inspection, callstack, expressions
mesen-memory	Memory read/write, search, freeze, address conversion, access counters
mesen-disassembly	Disassembly, assembly, labels, Code Data Logger, tracing, profiling
mesen-emulator	System control, save states, history/rewind, sprites/tilemaps
mesen-romhacking	Cheats, tiles, palette, Lua scripting, TBL text search, ROM patching
mesen-console-reference	Per-console reference: memory types, CPU types, tile formats for all 7 systems
mesen-workflows-nes	NES reverse engineering workflows
mesen-workflows-snes	SNES reverse engineering workflows
mesen-workflows-gb	Game Boy / GBC reverse engineering workflows
mesen-workflows-gba	GBA reverse engineering workflows
mesen-workflows-pce	PC Engine / TurboGrafx-16 reverse engineering workflows
mesen-workflows-sms	SMS / Game Gear reverse engineering workflows
mesen-workflows-ws	WonderSwan reverse engineering workflows

Supported Systems

NES, SNES, Game Boy, GBA, PC Engine, SMS/Game Gear, WonderSwan

Upstream

MesenCE with MCP support: https://github.com/sadnescity/MesenCE