Adam CAD Harness Integrates with Fusion and Onshape for Agentic CAD Editing

Adam (adam.new) has released a harness that natively integrates with Autodesk Fusion and PTC Onshape, allowing an AI agent to read and edit your existing CAD feature tree. The tool focuses on giving mechanical engineers full visibility and control, rather than being a black-box text-to-STL generator.

Key Features

• Model-agnostic: picks the best frontier model (e.g., GPT 5.5, Opus 4.7) from its internal benchmark per task.
• Lives inside Fusion and Onshape; reads the feature tree and edits it agentically.
• Common use cases: merge redundant features, rename features for readability, round all internal edges with a 2mm fillet, parametrize models, or generate CAD end-to-end.
• Leverages FeatureScript (Onshape) and Python (Fusion) under the hood.

Installation on Autodesk Fusion

One-liner install (recommended, ~10 seconds):

macOS: paste in Terminal

curl -sSL https://fusion.adam.new/install.sh | bash

Windows: paste in PowerShell

irm https://fusion.adam.new/install.ps1 | iex

After install: quit Fusion, reopen, press Shift+S → Add-Ins tab → find AdamFusion → click Run and tick 'Run on Startup'.

Manual install: download AdamFusion.bundle.zip, unzip, move the Contents folder into:

• macOS: ~/Library/Application Support/Autodesk/Autodesk Fusion 360/API/AddIns/ (rename to AdamFusion)
• Windows: %APPDATA%\Autodesk\Autodesk Fusion 360\API\AddIns\AdamFusion

Then quit and reopen Fusion, enable via Add-Ins panel, and sign in with your Autodesk account.

Context

Adam’s earlier text-to-CAD work is open-sourced on GitHub. The team also notes that the Anthropic Autodesk connector validates the space but differs in being model-specific; Adam remains model-agnostic.