FraktalMCP
Free AI for Grasshopper
Free and open-source Grasshopper plugin: describe what you need in plain language, get Rhino geometry and GhPython scripts. Bring your own API key, runs locally inside Rhino 8.
- 100% Free & Open Source (MIT License)
- Bring Your Own Key (BYOK): Claude, GPT, Ollama
- Runs locally inside Rhino 8
- Natural language to geometry
- No cloud dependency
Create a waffle surface structure.
Installed in Three Steps
Three real steps between you and AI inside Grasshopper.
- 01
Download
Get the free .gha plugin from Food4Rhino or build it from source on GitHub.
food4rhino.com → fraktal-mcp.gha - 02
Drop into Libraries
Copy the file to your Grasshopper Libraries folder and restart Rhino 8.
%AppData%\Grasshopper\Libraries - 03
Bring your key
Enter your own API key. Your key, your cost control, your data privacy.
BYOK: Claude · GPT · Ollama
Create a parametric waffle structure from two intersecting surface grids.
Schematic view; the plugin runs inside Rhino 8.
FraktalMCP vs Falcon AI Pro
| FraktalMCP (Free) | Falcon AI (Pro) | |
|---|---|---|
| Price | Free (MIT) | Not announced |
| Source | Open Source (MIT) | Proprietary |
| Text to Geometry | ✓ | ✓ |
| GhPython Scripts | ✓ | ✓ |
| Canvas Builder | ✕ | Planned |
| Visual Debugging | ✕ | Planned |
| Plugin Awareness | Basic | Planned |
| Multi-Agent Swarm | ✕ | Planned |
Get FraktalMCP
100% free. Download from Food4Rhino or build from source on GitHub. Requires Rhino 8 (Windows) and an API key from Anthropic, OpenAI, or local Ollama setup.
$ Download .gha from Food4Rhino → Copy to Grasshopper Libraries folder → Restart Rhino Frequently Asked Questions
Is FraktalMCP really free?
Yes, 100% free and open source under the MIT License. You only pay for the API tokens you use with your own key (Claude, GPT, etc.). If you use Ollama with local models, it's completely free.
What's the difference between FraktalMCP and Falcon AI?
FraktalMCP is our free, open-source plugin focused on text-to-geometry and GhPython generation. Falcon AI is the pro track now in development; its planned features include a canvas builder (placing GH components with correct wiring), visual debugging, plugin awareness, and a multi-agent architecture.
Do I need coding experience?
No. Type what you want in plain English. FraktalMCP handles the rest. Advanced users can refine the generated GhPython scripts.
Which AI models are supported?
Claude (Anthropic), GPT (OpenAI), Gemini (Google), Ollama (local), LM Studio, and any MCP-compatible provider. Bring your own API key.
Is my data safe?
Your Rhino files and geometry never leave your machine. Only the text of your prompts is sent to your chosen AI provider. Run Ollama locally for 100% offline operation.
Start Using AI in Grasshopper for Free
Download FraktalMCP from Food4Rhino. Open source, no subscription, no lock-in.
How a Prompt Becomes Geometry
A schematic view of the pipeline: what FraktalMCP does with a prompt, step by step.