OwlCAD

Name: OwlCAD
Author: Spare-Matter

by Spare-Matterversion 1.0.1i★ –iRuns in the cloud

Registry namecom.owlcad/mcp

Install

Overview

Description from the maker (original English)

Parametric 3D CAD for AI agents: build print-ready parts, check them, export STL, 3MF or STEP.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Design, images & audio

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.owlcad.com

Run this in your terminal

claude mcp add --transport http owlcad https://mcp.owlcad.com

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "owlcad": {
      "url": "https://mcp.owlcad.com"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "owlcad": {
      "type": "http",
      "url": "https://mcp.owlcad.com"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.owlcad.com

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain owlcad.com (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Design, images & audioi

More stars than 0% of the other 2199 servers in this category
Published to the registry more recently than 56% of the other 2199 servers in this category
Basic checks equal to or better than 100% of the other 2199 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is OwlCAD safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 23 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Figma Context MCP, Claude Real Video, Figma MCP Server

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Figma Context MCP

by GLips

Give your coding agent access to your Figma data. Implement designs in any framework in one-shot.

Runs on your computer★ 16,165MITUpdated 5 months ago

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Claude Real Video

by HUANGCHIHHUNGLeo

Let any LLM watch a video locally — and search everything it has ever watched.

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Figma MCP Server

by figma

Figma’s official server gives AI your design data so it can turn designs into code or describe them accurately. Connects to Figma’s cloud.

Runs in the cloud★ 2,152Updated 13 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

OwlCAD

Parametric 3D CAD for 3D printing, for your AI assistant. This plugin connects Claude, GitHub Copilot in VS Code, Cursor or Gemini CLI to OwlCAD's hosted MCP server, so the assistant can build millimeter-dimensioned parts, check that they will print, and export STL, 3MF or STEP. Everything it makes is a normal OwlCAD project: a tree of named, dimensioned parts you can open in the browser editor at owlcad.com and change afterwards.

What it can do

Build parts from primitives and booleans, built-in generators (gears, threads, Gridfinity bins and baseplates) and a library of datasheet-dimensioned parts.
Check them: watertight build, size and volume, overhangs, thinnest wall, collisions between parts, and whether a part fits a given printer's bed. It can also cut an oversized part into printable pieces.
Export STL, 3MF or OBJ for a slicer, STEP for other CAD tools, or a 2D drawing.
List, read, edit, organize, share and delete your saved OwlCAD projects.

29 tools in all. The full list, with what each one does, is at owlcad.com/mcp-server.

Requirements

An OwlCAD account on the Pro plan. The first time the assistant uses OwlCAD, a browser opens so you can sign in and approve what it may do. You can revoke the connection at any time from Account settings on owlcad.com.

What it runs, sends and fetches

This plugin contains configuration only. It runs nothing on your machine. It points your assistant at https://mcp.owlcad.com/, OwlCAD's hosted server. Each tool call sends that server the model or project the assistant is working on, and the server reads and writes projects in your OwlCAD account. How that data is handled is described in the privacy policy.

Install

The server is https://mcp.owlcad.com/ (Streamable HTTP). It signs you in with OAuth, so there is no API key to copy.

Claude (web, desktop): open OwlCAD in Claude's directory and select Connect. Or add it by URL: Settings → Connectors → Add custom connector, and paste https://mcp.owlcad.com/.
GitHub Copilot in VS Code: run MCP: Add Server from the Command Palette, choose HTTP and enter https://mcp.owlcad.com/, or add it to .vscode/mcp.json, then sign in when VS Code asks:

  { "servers": { "owlcad": { "type": "http", "url": "https://mcp.owlcad.com/" } } }

Claude Code: claude mcp add --transport http owlcad https://mcp.owlcad.com/
Cursor: add the server to ~/.cursor/mcp.json (or a project's .cursor/mcp.json), then sign in when Cursor asks:

  { "mcpServers": { "owlcad": { "url": "https://mcp.owlcad.com/" } } }

Gemini CLI: gemini extensions install https://github.com/Spare-Matter/owlcad-plugin

Other MCP clients that speak Streamable HTTP work the same way: point them at the URL and sign in.

Using it

Ask in plain language. For example:

"Design a 60 mm wall hook with two screw holes and check that it prints."
"Make a 2 by 3 Gridfinity bin, 6 units tall, and save it to OwlCAD."
"Make a 20-tooth and a 40-tooth spur gear that mesh, check they don't collide, and export a STEP."
"Export my latest OwlCAD project as a 3MF."

The assistant builds the model with OwlCAD's tools, checks it, and gives you a file or a link that opens the project in the editor, where every dimension can still be changed. Units are millimeters and Z points up.

Support

owlcad.com/contact · contact@owlcad.com

License

The files in this repository (configuration and documentation) are MIT-licensed; see LICENSE. The OwlCAD service they connect to is proprietary.

OwlCAD

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Design, images & audioi

Common questions

Alternatives

Figma Context MCP

Claude Real Video

Figma MCP Server

README from the maker

OwlCAD

What it can do

Requirements

What it runs, sends and fetches

Install

Using it

Support

License