Robohopper 0.2.0 beta
=====================
A local bridge that lets your AI coding agent build in Grasshopper. Rhino 8 SR18+ (Win/Mac).
Open Rhino's C# Script Editor once before first use.

WHAT IS INSIDE
  plugin/windows/  Robohopper.gha + Newtonsoft.Json.dll   (Rhino 8 on Windows)
  plugin/mac/      Robohopper.gha + Newtonsoft.Json.dll   (Rhino 8 on Mac)
  kit/             the agent-side kit (onboarding, skill, helper) for your AI
  LICENSE

EASIEST - let your AI do it
  Unzip this folder, hand it to your AI coding agent, and give it the entry prompt from
  https://simonepeluffo.com/robohopper . The agent installs the plugin and the kit, then stops
  and asks you to open Rhino.

MANUAL INSTALL (if you prefer)
  1. From the plugin folder that matches your OS (windows/ or mac/), copy BOTH files -
     Robohopper.gha and Newtonsoft.Json.dll - into your Grasshopper Libraries folder:
       Windows: %APPDATA%\Grasshopper\Libraries
       Mac:     inside the GUID-named "Grasshopper (...)" plugin folder, its Libraries subfolder.
                Do NOT use a plain ".../Grasshopper/Libraries" path - it is wrong. Find the real one:
                find ~/Library/Application\ Support/McNeel/Rhinoceros -maxdepth 3 -type d -iname "Grasshopper*"
                (this folder is created the first time you open Grasshopper; if the search is empty,
                open Grasshopper once, then install). In Rhino you can also open it via
                Grasshopper > File > Special Folders > Components folder.
  2. On Windows, unblock BOTH files - Robohopper.gha AND Newtonsoft.Json.dll (right-click >
     Properties > Unblock, or Unblock-File on both): a blocked .dll fails to load just like the .gha.
     On Mac, clear the quarantine: xattr -dr com.apple.quarantine Robohopper.gha Newtonsoft.Json.dll
  3. Hand the kit/ folder to your AI agent and tell it to run kit/ONBOARDING.md (it installs the
     skill, then stops).
  4. Start Rhino 8, then open Grasshopper. The bridge starts automatically - nothing to place on
     the canvas. Tell your agent it is open; it verifies the bridge and is ready to build.

Robohopper runs on your machine only (127.0.0.1) and makes no outbound network calls of its own.
Proprietary free beta. Copyright 2026 Simone Peluffo. All rights reserved.
