Generate parametric geometry workflows with an agent
GrassLobster uses agentic AI to generate parametric geometry workflows.
What they did
Miro Bannwart's Rhino/Grasshopper plugin links an external coding agent, such as Codex or Claude Code, to a saved project folder. The agent interviews you about the idea, then builds connected Geometry Stations whose code and inputs are mirrored as text files. You review the canvas and change parameters. In one test, Miro marked a screenshot in red and green to correct a staircase handrail.
How it went
Examples include a chest of drawers, curved staircase, villa, bookshelf and timber frame. It is an experimental alpha. Miro got his best results with GPT-6 Astra, and his local-model attempts failed.
Worth knowing
Give the agent access to the project folder only, keep backups, and test with a small model first. IFC export is unreliable (sphere Breps failed reimport) and can take minutes.
Labels
The agent interviews you about the idea, then builds connected Geometry Stations whose code and inputs are mirrored as text files.
The agent interviews you about the idea, then builds connected Geometry Stations whose code and inputs are mirrored as text files.
The agent interviews you about the idea, then builds connected Geometry Stations whose code and inputs are mirrored as text files.
Miro Bannwart's Rhino/Grasshopper plugin links an external coding agent, such as Codex or Claude Code, to a saved project folder.
The “Material” label failed its quality check and is not used for selection.
Details
- Agents
- custom-built or unnamed agent
- Source
- Hacker News
- Source date
- Sep 18, 2026
- Accounts
- 1
- In registry since
- Oct 12, 2026