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FREE & OPEN SOURCE

FraktalMCP

Describe it. Model it in Rhino.

Generate geometry and GhPython scripts from a chat panel inside Grasshopper.

Rhino 8 for Windows. Requires your own Anthropic API key.
Related research and articles
FraktalMCP / Rhino 8
Prompt

Create a waffle surface structure.

GH Python Rhino geometry Anthropic API

Installed in Three Steps

Download the plugin, add it to Grasshopper and enter your API key.

  1. 01

    Download

    Get the free .gha plugin from Food4Rhino.

    food4rhino.com → fraktal-mcp.gha
  2. 02

    Drop into Libraries

    Copy the file to your Grasshopper Libraries folder and restart Rhino 8.

    %AppData%\Grasshopper\Libraries
  3. 03

    Add your API key

    Place the FraktalMCP component on the canvas and double-click it to open the panel. In Settings, enter your Anthropic API key. Requests use your provider account and require an internet connection.

    BYOK: Anthropic · Claude

Schematic view; the plugin runs inside Rhino 8.

Two Related Lines of Work

FraktalMCPFalcon AI Research
Price Free (MIT) Not announced
Source Open Source (MIT) Proprietary
Output Rhino geometry and GhPython scripts Native Grasshopper components and connections
Focus Geometry and GhPython generation Context and native canvas definitions
Availability Food4Rhino release Working research prototype

Get FraktalMCP

Free under the MIT license. The Food4Rhino release requires Rhino 8 on Windows, an Anthropic API key, and an internet connection.

$ Download .gha from Food4Rhino → Copy to Grasshopper Libraries folder → Restart Rhino

Frequently Asked Questions

Is FraktalMCP really free?

Yes. The plugin is free under the MIT license. Anthropic API usage is billed separately through your own provider account.

What's the difference between FraktalMCP and Falcon AI?

FraktalMCP is our public open-source plugin for Rhino geometry and GhPython generation. Falcon is a working research prototype exploring model context and native Grasshopper definitions.

Do I need coding experience?

You can start with a plain-language request. Familiarity with Rhino and Grasshopper helps you check the resulting geometry and review generated scripts.

Which AI models are supported?

The Food4Rhino release connects to Claude through your own Anthropic API key. Its Settings panel includes model selection.

Does it run entirely offline?

No. The panel and generated geometry run in Rhino, while chat requests and conversation context are sent to the Anthropic API. Choose what project information to include accordingly.

Bring AI into Grasshopper

Download the MIT-licensed plugin from Food4Rhino. Bring your Rhino 8 setup and your Anthropic API key.

How a Prompt Becomes Geometry

Follow a request through FraktalMCP in this schematic example.

FraktalMCP · schematic
› "Create a parametric waffle structure from two intersecting surface grids."
> Parsing intent...
> Mode: Rhino Viewport Geometry
> Generating surface grids...
> Computing intersections...
> Building waffle joints...
✓ Waffle ribs with notched joints generated
✓ Geometry placed in Rhino viewport
Claude model · Viewport mode · Schematic view