Does the file leave my machine?

No. Open3D exposes a local MCP server bound to 127.0.0.1 with a bearer token. The AI runs on its own vendor's servers, but the tool calls it makes hit your machine directly. The file itself is never uploaded.

Yes on the Open3D side. The MCP server and every tool are part of the free Open3D Viewer app. You still pay whatever your AI subscription costs — for example Claude Pro or ChatGPT Plus.

What can the AI actually do to my model?

Open a 3D file from your PC, view it from any angle, report its size and parts, check it for 3D printing (watertight, overhangs, rough material and time estimate), repair it, cut, combine, mirror or simplify it, add pins with notes, and change colours, materials and textures. Every change can be undone, and nothing is saved until you ask.

Can it edit files on iOS or Android?

Not yet. AI Tools is on the Windows app, where desktop AI apps live. The iPhone and Android apps have the same viewer without AI Tools.

AI Tools · Windows · experimental

Talk to your 3D files with the AI you already use.

Connect Claude, ChatGPT, Cursor and other AI assistants to Open3D Viewer in one click. Then just ask, in plain English: open a model, check it for printing, fix a hole, make it 2× bigger, paint it walnut. It all happens on your own PC, and every change can be undone.

Get Open3D for Windows → How to set it up

Set it up in a minute

Install Open3D Viewer for Windows from the Microsoft Store. It's free, and everything the AI needs comes with the app.
Open Settings → AI Tools and switch it on. It stays off until you do.
Click Install next to your AI app, then restart that app so it picks up Open3D.
Ask away. Open a model in Open3D and try "Take a screenshot from the top and tell me how big this is."

Setup didn't work? AI apps change often — email [email protected] and tell us which one; we'll fix it.

Works with

Claude Desktop

Chat app · Anthropic

Free download. One-click setup from Open3D.

ChatGPT / Codex

Chat & coding app · OpenAI

The current ChatGPT desktop app from the Codex install (not the old "ChatGPT Classic"). One-click setup.

Cursor, Windsurf, Zed

Code editors

Their built-in AI chat can use Open3D. One-click setup for each.

Google Antigravity

Terminal & editor · Google

Google's replacement for Gemini CLI. One setup covers both the Antigravity CLI and IDE.

Plain web chats (chatgpt.com, gemini.google.com) and the Gemini desktop pop-up can't connect to apps on your PC yet, so they won't see Open3D.

What you can ask it to do

Open & look

Open any 3D file on your PC by giving its location — STL, 3MF, OBJ, GLB, FBX, STEP and more. View it from any angle, take screenshots, and get a plain summary: size, parts, triangle count, materials.

Check it for 3D printing

Is it watertight? Where does it need supports? Roughly how much filament and time will it take? Scale it to an exact size, sit it flat on the bed, or centre it.

Fix problems

Fill holes, close open gaps, flip inside-out surfaces, merge loose points, clean up stray bits and smooth rough patches.

Change the shape

Cut it with a plane, split it into parts, delete or keep areas, combine or subtract shapes, mirror it, make it symmetric, repeat it in a row or a circle, add simple shapes like boxes and cylinders, or reduce the triangle count.

Colours, materials & textures

Pick from 18 ready materials (walnut, oak, brass, gold, chrome, glass, PLA…), set your own colours, or apply texture packs from a folder on your PC — it can create the texture layout for you first.

Pins & notes

Drop numbered pins with notes on the model ("thicken this wall"), then edit or remove them. The AI can read the pins you drop, too.

Safe by design: every change can be undone, and nothing is written to disk until you ask it to save — and you choose where (as GLB or STL), so your original can stay untouched.

Things to try

Type these into your AI app; Open3D does the rest.

Open C:\Users\me\Downloads\bracket.stl and tell me how big it is.

Is this model ready to 3D print? Show me where it needs supports.

Fill the holes in this scan and smooth the patches so you can't see them.

Make it exactly 120 mm wide and put it flat on the print bed.

Make the wooden parts walnut and the metal parts brass, then take a screenshot.

Open these three files one by one and tell me which ones aren't watertight: …

Your files stay on your PC

Open3D runs the AI connection locally — it isn't reachable from the internet, and it's protected by a private key created when you switch it on. Your AI app sees what you type, plus the screenshots and answers Open3D sends back, but your 3D file itself is never uploaded.

Working on something confidential? You can reset that key in Settings at any time, which disconnects every AI app until you set it up again.

FAQ

Which AI apps work with Open3D?

Claude Desktop, ChatGPT / Codex desktop, Cursor, Windsurf, Zed and Google Antigravity (CLI and IDE). Setup is one click from Settings → AI Tools.

Does my file get uploaded?

No. The connection runs on your own PC. Screenshots and answers go back to your AI app as part of the chat, but the 3D file itself never leaves your machine.

Is it free?

Yes — AI Tools is part of the free Open3D Viewer app. You only pay for your AI app's own subscription, if it has one.

Can I use it on iPhone or Android?

Not yet. AI Tools is on the Windows app, where desktop AI apps live. The phone apps have the same viewer without AI Tools.

Can the AI ruin my file?

No. Every change can be undone, and nothing is saved until you ask — and you decide where it goes. If you like extra safety, keep a backup of important files anyway.

It's not connecting. What now?

Restart your AI app after clicking Install. Still stuck? Email [email protected] with the name of your AI app — AI apps update their setup often and we fix these quickly.

I'm a developer — can I connect my own tool?

Yes. Open3D speaks the Model Context Protocol (MCP). Settings → AI Tools shows a local MCP address and access key for any client that supports MCP over HTTP.