Yes. Blockbench is free and open source (GPL-3.0) and so is the Blockbench MCP plugin (GPL-3.0). What you do need is Claude Code, which requires a paid Claude plan or a Claude Console account.

Does it work with the web version of Blockbench?

For this guide, use the desktop version: the plugin starts a local server that Claude Code connects to, and that only works in the installed app.

Does it work for Minecraft Java?

The plugin exports to Java as a “modded entity”, which is the model code used by mods. To see it in the game you need a mod and a loader (Forge or Fabric, for example). Bedrock is more direct: you export the geometry, animations and texture as an add-on.

Can I use regular Claude (claude.ai)?

The documented way is to connect Claude Code to the plugin with the claude mcp add command. Claude Code is what we used in the reel.

What if Claude does something I don’t like?

Every change goes through Blockbench’s history, so you can undo it with Ctrl/⌘ + Z. You can also ask Claude to change it: “remove the horn from the head.”

Can I make other mobs?

Yes. The moss golem is just an example. Swap the description for your own mob: a pirate zombie, a lava dog, a robot… Keep the bones and texture part so it can be animated later.

Create your own Minecraft mob with Claude and Blockbench MCP: setup and 2 prompts

Making your own Minecraft mob used to be modder territory: modeling cube by cube, painting the texture pixel by pixel and animating frame by frame.

Now you can ask Claude to do it. Describe “a moss golem with glowing eyes” and it builds it inside Blockbench, paints the texture and gives it an idle animation and a walk animation. You review each step and keep the model.

From a description to your mob

Describe your mob
“A moss golem with glowing eyes.”
Claude builds the skeleton
Head, body, arm and leg bones, plus the cubes, block by block.
It paints the texture
A 64×64 mossy stone texture.
It animates it
An idle animation and a walk animation.
You export it
As a Bedrock add-on or as a modded entity for Java.

What’s under the hood

Blockbench. The app used to make Minecraft models, for both Java and Bedrock. It is free and open source (GPL-3.0).
Blockbench MCP plugin, by jasonjgardner. It adds an MCP server to Blockbench: the standard way for Claude to control other programs (if that sounds like gibberish, read what MCP is). With it, Claude can create groups and cubes, create textures, add animations and keyframes, and export the model. It is free, GPL-3.0 licensed, and had 598 stars on GitHub as of November 2, 2026.
Claude Code, which is the one giving the orders.

Blockbench MCP plugin (jasonjgardner)

Open the repo

Free and open source · GPL-3.0 license · Credit to jasonjgardner

What you need

Blockbench desktop. Download it for free at blockbench.net. The web version won’t work for this.
Claude Code installed. It requires a paid Claude plan (Pro, Max, Team or Enterprise) or a Claude Console account.

Setup in 3 steps

Step 1 · Load the plugin in Blockbench

Open Blockbench and go to File › Plugins. Click Load Plugin from URL and paste this address:

https://jasonjgardner.github.io/blockbench-mcp-plugin/mcp.js

Step 2 · Connect Claude Code

In your terminal, run:

claude mcp add blockbench --transport http http://localhost:3000/bb-mcp

That command tells Claude Code the plugin is listening on your computer. Run claude mcp list to check that blockbench shows up. If it shows as disconnected, make sure Blockbench is open with the plugin loaded.

Step 3 · Ask for your mob

With Blockbench open, open Claude Code and paste the first prompt.

Prompt 1 · The mob

Prompt 1 · Create the mob

Create a Minecraft mob in Blockbench (Bedrock entity model): a moss golem with glowing eyes. Build it with the bones body, head, arm_left, arm_right, leg_left and leg_right, cubes block by block, and paint a 64×64 mossy stone texture. Go step by step and show me each one.

Note

Why those bones. Bones are the parts that move: if the leg is its own bone, it can be animated on its own later. With a head, body, two arms and two legs, Claude has everything it needs for the walk animation.

Swap the golem for your own idea: a pirate zombie, a lava dog, a rusty robot… What matters is keeping the list of bones and the texture size.

Prompt 2 · Animate and export

Add two looping animations: idle (breathing and moving the head) and walk (alternating legs and arms). Then export it as a Bedrock add-on (geometry + animations + texture) and tell me where each file goes.

Tip

Review every step. Watch the model in Blockbench while Claude works. If something odd shows up (a horn you didn’t ask for, a crooked leg), press Ctrl/⌘ + Z to undo it or ask Claude to change it. All its edits go through Blockbench’s history.

Exporting: Bedrock or Java

Edition	What you export	What you need to see it in the game
Bedrock	Geometry + animations + texture (add-on)	Put the files into an add-on (behavior pack + resource pack). Claude tells you where each one goes.
Java	Modded entity (model code)	A mod with its loader (Forge, Fabric…). The model alone isn’t enough to make it appear in the game.

If it is your first mob, start with Bedrock: it is the shortest path to seeing it in your world.

What it doesn’t do

It isn’t magic on the first try. You may get a misplaced cube or a simple texture. Ask for changes: that is normal.
It doesn’t work in the web version of Blockbench. You need the desktop app open while you work.
On Java it isn’t a complete mod. It gives you the model for a mod; coding the mob’s behavior is another story.
It doesn’t put anything into Minecraft for you. Copying the files into the add-on or the mod is up to you (Claude tells you where each one goes).

Is it worth it?

If you play Minecraft and have always wanted your own mob, yes. In one afternoon you go from a sentence to an animated model that is yours. And since everything is free except Claude, you can try as many ideas as you like.