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GenXDefinition — Grasshopper Design Assistant. From Prompt to Parametric Design.

Abstract intent to code: compile C# that auto-assembles clean, iteratable Grasshopper definitions

GenXDefinition is a custom version of ChatGPT for Grasshopper built for parametric architects, artists and designers. GenXDefinition accelerates Grasshopper work by converting your design intent into compiling C# scripts that build full definitions—components placed, wires connected and sliders set. It respects data types, uses validated component proxies, and favors best-practice structure (clear messages, sensible parameter ranges, and reproducible setups). Whether you’re exploring façade systems, furniture, canopies, or stairs, you get clean, parameterized graphs that are easy to tweak, version, and scale. Set up intention, Iterate freely, code in safe environments. Experiment with contemporary design practices.

By launching on chatgpt.com you agree to our Terms of Use.

Launch GenXDefinition on chatgpt.com See example outputs
Parametric glow video
Additional parametric glow video from YouTube

How it Works

Step 1

Describe intent — e.g., “spiral canopy with hex panels + two attractors.”

Step 2

GenXDefinition generates — set the complete C# script that assembles the definition.

Step 3

Tweak & iterate — sliders, parameters, and clean grouping for fast variants.

About

GenXDefinition automates architectural and furniture design in Grasshopper. Describe your design intention and domain — organic, minimal, ergonomic or brutalist, facades, canopies, stairs, chairs or lamps with panels and attractor influence, —and receive a complete C# that assembles the definition with the help of the C# component. Go from prompt to parametric design you can adjust and expand for concept, iteration, and production. Edit, iterate, and scale to real projects.

Instructions

To integrate this tool effectively:

  • Drag and place a new C# scripting component onto the Grasshopper canvas.
  • Remove the default output [a].
  • Paste the provided script into the C# component.
  • Add two input :
  • [x] as a Boolean Toggle to activate or deactivate the script functionality.
  • [y] as a Button component to trigger immediate execution of the script.

Capabilities

  • Generates end-to-end C# scripts that assemble 30+ Grasshopper components per definition
  • Uses sane slider ranges and clean canvas layout for rapid tuning
  • Supports organic + rational forms: lofts, ruled surfaces, attractors, panelization
  • Clear runtime feedback, stable scheduling, and reproducible outputs
  • Enforces correct proxy names & data types, with helper methods included

Who it’s for

  • Studios & makers who want parametric speed without scripting overhead
  • Architects & computational designers exploring early stages of design
  • Design educators & students exploring parametric workflows

Example Raw Outputs

Titles only; each is built as a complete, compiling definition. 30+ components • typed connections • reproducible.

Origin & Research

Research‑driven tool

Born from academic research; crafted for real design workflows.

Research‑driven M.Sc. Interaction Generative Design Hellenic Open University
“Synergies of Generative Design Systems: Parametric Applications, Custom Tools, and Large Language Models (LLMs) Processes in Computational Design.”
School
Applied Arts & Sustainable Design
Programme
M.Sc. Interaction Generative Design

Experimental & unaffiliated

  • Not affiliated with, endorsed by, or sponsored by Grasshopper, Rhino, Robert McNeel & Associates (McNeel), or OpenAI.
  • Developed as an experimental research effort that continues beyond the MSc dissertation.
Experimental research Read Terms

FAQ

Does GenXDefinition output complete, compiling scripts?

Yes—end-to-end C# that assembles Grasshopper definitions with typed connections.

Can I adjust ranges and parameters?

Yes—sane slider ranges and clear grouping are included.

Organic or rational?

Both: lofts, ruled surfaces, attractors, panelization.

Is this production-ready?

It’s designed for rapid concepting through to fabrication-aware logic.

What about reproducibility?

Stable scheduling and clear runtime feedback ensure repeatable results.

Ready to go from prompt to parametric?

Open GenXDefinition to generate Grasshopper scripts instantly.

By launching on chatgpt.com you agree to our Terms of Use.

Launch GenXDefinition

Changelog

  • 2025-08-08 — Beta launch copy & site.
  • 2025-08-06 — Added gallery examples and FAQ refinements.