goldsmith323/rhino_gh_mcp

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Repository Install

MCP providing 30+ tools for interacting with Rhino 3D and Grasshopper through LLM

概要

A Model Context Protocol (MCP) server providing 30+ tools for interacting with Rhino 3D and Grasshopper through natural language. Features include parametric geometry generation, cross-file workflows, intelligent geometry transfer, and automated workflow suggestions. Uses an HTTP bridge architecture to handle Python version compatibility between MCP (Python 3.10+) and Rhino's IronPython. - - Comprehensive toolset for Rhino 3D and Grasshopper automation - - Automatically converts and validates geometry between files (Lines, Curves, Surfaces, Meshes, Breps) - - Automated parameter discovery using eml_ prefix for cross-file workflows - - JSON metadata system suggests file sequences and parameter connections - - Auto-launching Grasshopper, batch file operations, file verification - - Toggle verbose output via .

README

以下は原文 README の抜粋です。原文を見る。

Workshop 1: Agentic AI Design Orchestration using MCP

AAG2025: Advances in Architectural Geometry - Massachusetts Institute of Technology | 16—17 November 2025 | Workshop Page

Rhino Grasshopper MCP Server

Architecture

┌─────────────────┐         ┌──────────────────┐         ┌─────────────┐
│   MCP Client    │ ◄─────► │   MCP Server     │ ◄─────► │   Rhino     │
│                 │   MCP   │ (Python 3.10+)   │  HTTP   │   Bridge    │
└─────────────────┘         └──────────────────┘         └─────────────┘
                                                              ▲
                                                              │
                                                         Rhino API
                                                         Grasshopper API

Key Features

30+ Tools - Comprehensive toolset for Rhino 3D and Grasshopper automation
Smart Geometry Transfer - Automatically converts and validates geometry between files (Lines, Curves, Surfaces, Meshes, Breps)
EML Convention - Automated parameter discovery using eml_ prefix for cross-file workflows
Workflow Suggestions - JSON metadata system suggests file sequences and parameter connections
File Management - Auto-launching Grasshopper, batch file operations, file verification
DEBUG_MODE - Toggle verbose output via .env file for 60-80% token savings in production
Custom Scripts - Execute Python code in Grasshopper with full access to component data
Geometry Baking - User-controlled baking to Rhino with layer management and confirmation
Auto-Discovery - Decorator-based tool registration - no manual configuration needed

Project Structure

MCP/

MCP server and client integration:

main.py - MCP server with auto-discovery
bridge_client.py - HTTP client for Rhino communication
config/ - Configuration templates
requirements.txt - Python 3.10+ dependencies

Rhino/

HTTP bridge server running inside Rhino:

rhino_bridge_server.py - HTTP server (IronPython 2.7/3.9)
start_rhino_bridge.py - Startup script

Tools/

Tool definitions with decorator-based auto-discovery:

rhino_tools.py - Rhino 3D tools
gh_tools.py - Grasshopper tools
tool_registry.py - Auto-discovery system

GitHub で README 全文を見る

インストール

This server does not publish a one-line install command.

Open the repository installation guide MCP 初心者？mcpskill.org のガイドから始めましょう →

設定

{
  "mcpServers": {
    "rhino_gh": {
      "command": "python",
      "args": ["C:\\path\\to\\rhino_gh_mcp\\MCP\\main.py"]
    }
  }
}