Enfusion MCP Server

enfusion-mcp

MCP server for Arma Reforger modding. Describe what you want to build, and Claude handles everything — API research, code generation, project scaffolding, Workbench control, and in-editor testing. Zero modding experience required.

Install

Claude Code (Windows)

claude mcp add --scope user enfusion-mcp -- cmd /c npx -y enfusion-mcp

Claude Code (macOS / Linux)

claude mcp add --scope user enfusion-mcp -- npx -y enfusion-mcp

Restart Claude Code. Verify with /mcp.

Claude Desktop

Add to your claude_desktop_config.json:

Windows:

{
  "mcpServers": {
    "enfusion-mcp": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "enfusion-mcp"]
    }
  }
}

macOS / Linux:

{
  "mcpServers": {
    "enfusion-mcp": {
      "command": "npx",
      "args": ["-y", "enfusion-mcp"]
    }
  }
}

Restart Claude Desktop. Verify with /mcp.

Workbench Plugin

The live Workbench tools (wb_*) require handler scripts running inside Workbench. These ship with the package in mod/Scripts/WorkbenchGame/EnfusionMCP/ and are installed automatically when Claude launches Workbench via wb_launch.

Usage

Just ask Claude to make a mod:

• "Create a HUD widget that shows player health and stamina"
• "Make a zombie survival game mode with wave spawning"
• "Create a custom faction called CSAT with desert camo soldiers"
• "Add an interactive object that heals the player when used"
• "Override the damage system to add armor mechanics"

Or use the guided prompts for structured workflows:

Claude will:

1. Assess complexity — simple mods are built in one pass; large mods (e.g., a DayZ-style overhaul) get broken into phases with a plan you approve before any code is written
2. Research the Enfusion API (8,693 indexed classes), the Arma Reforger wiki (250+ guides), and base game assets (read directly from .pak archives) to find the right approach
3. Scaffold the full addon — .gproj, scripts, prefabs, configs, UI layouts
4. Launch Workbench if it's not already running
5. Load the project, reload scripts, register resources
6. Validate and build the addon
7. Enter play mode so you can test in-game

For complex mods, a MODPLAN.md is written to the project root tracking the full vision, completed phases, and what's next — so any future session can pick up right where the last one left off via /modify-mod.

Tools

Offline Tools

Work without Workbench running — API search, mod scaffolding, code generation, validation, and building.

Live Workbench Tools

Control a running Workbench instance over TCP. Requires the handler scripts installed (see setup above).