Kiln MCP Server

Use This MCP server To

Design a custom 3D part from a simple description Slice a 3D model and prepare it for printing Send a print job to my 3D printer remotely Monitor the progress of a print job via AI Recover from print errors automatically Take snapshots from my printer’s webcam Queue multiple print jobs for batch printing

README

The open-source MCP server for 3D printing.

Kiln lets AI agents (Claude Desktop, Claude Code, Codex, or any custom MCP client) drive real 3D printers end to end — Bambu Lab, Creality, Prusa, Elegoo, Voron, Sovol, AnkerMake, Artillery, FlashForge, QIDI, RatRig, and SparkX, over OctoPrint, Moonraker/Klipper, PrusaLink, and Direct USB.

In a single conversation, an agent can design a part, slice it, queue it on the right printer, monitor the camera, recover from failures, and ship the result. No human in the middle.

Reading this as an AI agent? kiln3d.com/agents is written for you rather than for the person running you: install, MCP config, the design-to-print loop, and exactly what Kiln will refuse to do and why.

pip install kiln3d

A Kiln agent session: the user asks for a coaster with their dog's photo; Kiln designs it, checks it will print, slices, and prints it on a Bambu A1 — done in 41 minutes.

A 3D-printed coaster with a relief portrait of a French bulldog and the name ASH along the bottom edge, held in a hand

"a coaster with a photo of my dog Ash" — start to finish, from one sentence.
Watch the demo →

_{Kiln's built in the open. If it made your printing more fun, or just saved you a headache, a ⭐ on the repo helps the next maker find it.}

Quick Start

Using Claude Desktop? Install Kiln in one click. Download kiln.mcpb and double-click it — Claude Desktop installs Kiln and wires it in (just Claude Desktop: steps 1 and 2 below are how Codex and every other AI app connect), so those steps aren't yours. Two things still are: OpenSCAD, and Kiln's terms — the command shows them and asks you to type your acceptance, which is why it's yours and not your AI's: uvx --from kiln3d kiln accept-terms. The bundle and that command both run on uv — free, with a one-line install for each platform at that link. If Claude Desktop says the server failed to start, that's uv missing: install it and restart. Updates arrive with the extension, not via kiln self-update.

Everyone else — three steps. Then ask your AI to make something.

1. Install

pip install kiln3d

2. Connect your AI — Kiln sets itself up inside Claude Desktop, Claude Code, and Codex:

Kiln FAQ

Can I use Kiln to design and 3D print custom objects from a simple description?

Yes — Kiln lets your AI design, slice, and print objects on many popular 3D printers without manual steps.

Which AI apps work with Kiln?

Kiln integrates with Claude Desktop, Claude Code, Codex, Cursor, and any MCP-compatible AI client.

Do I need an account or API key to use Kiln?

You can use Kiln without signing in, but creating a free account unlocks full features and easier setup.

How hard is it to set up Kiln?

Setup requires some developer steps like installing Python packages and configuring your AI app, so it’s best if you’re comfortable with basic command-line tasks.

Can Kiln manage printers from brands like Creality or Prusa?

Yes — it supports many brands including Bambu Lab, Creality, Prusa, Elegoo, and more, via OctoPrint, Moonraker, and other common printer interfaces.

Does Kiln let me monitor and control prints remotely?

Yes — you can check print status, view webcam snapshots, and manage print jobs through your AI assistant.

Is Kiln free to use?

Kiln is open-source and free to install; some features may require signing in for full access.