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Jupiter Industries

Industrial Solutions & Advanced Technologies for 2d6 sci-fi tabletop roleplaying campaigns. A comprehensive 2d6 TTRPG companion — built for game masters running sci-fi campaigns.

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AI-Powered TTRPG

2d6 MCP Server

A system-agnostic Model Context Protocol server that brings 2d6 dice mechanics, rules lookup, and character parsing directly into your AI-powered TTRPG workflow.

🎲

Dice Engine

2d6, d66, and custom notation with effect margins

📖

Rules Database

Cepheus Engine SRD by Samardan Press under OGL 1.0a

📁

BYOD Indexing

Ingest your own PDF, text, and markdown files

🔍

Table Lookup

Reaction, encounter, and patron tables

Installation

1

Clone the repository

git clone https://github.com/crowterliam/2d6mcp.git
2

Install dependencies & build

cd 2d6mcp && npm install && npm run build
3

Configure your MCP client

Add the server to your MCP client configuration. Works with Claude Desktop, Cline, Continue, and any other MCP-compatible client.

{
  "mcpServers": {
    "2d6mcp": {
      "command": "node",
      "args": ["/path/to/2d6mcp/dist/index.js"],
      "env": {
        "AGREE_NON_COMMERCIAL_USE": "true",
        "BYOD_PATH": "/path/to/your/rpg/files"
      }
    }
  }
}
4

Add your own rulebooks (BYOD)

Set BYOD_PATH to a directory containing your TTRPG PDFs, text files, or markdown. The server indexes them locally for AI-assisted rules lookup. Supports PDF, TXT, and MD formats.

export BYOD_PATH="/Users/you/Documents/ttrpg-books"
View on GitHubOffline-first · No network calls · No telemetry

Rules database powered by the Cepheus Engine SRD © 2016 Samardan Press (Jason "Flynn" Kemp), used under OGL 1.0a. Neither the 2d6mcp server nor Jupiter Industries is affiliated with Samardan Press.

Core Systems

Modular Game Tools

A comprehensive suite of 2d6 tools for running sci-fi TTRPG campaigns — from dice resolution to world generation, space combat, trade, and polity management.

Check Resolution

2d6 task resolution with difficulty, effect, and time-scale calculators.

Space Combat

Initiative, attack, damage, sensor detection, and dogfight calculators.

World Generator

Generate complete star systems with UWP codes and economic data.

Trade & Commerce

Trade route calculations, ship accounting, and cargo management.

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Platform

Built for Game Masters

Every tool is built around the 2d6 resolution system. Draggable, resizable windows let you arrange your workspace exactly how you need it.

  • Multi-window draggable interface
  • Light and dark adaptive themes
  • 2d6 dice resolution engine with effect margins
  • Offline-capable with localStorage persistence
  • Modular d66 table system for encounters
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