Blender

Blender MCP

Connect Blender to any LLM

Prompt-assisted 3D modeling, scene creation, and manipulation — driven by AI.

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Quickstart

Three steps: install uv, point your MCP client at the server, install the Blender addon.

1. Install uv

# macOS
brew install uv

# Linux
curl -LsSf https://astral.sh/uv/install.sh | sh

# Windows
powershell -c "irm https://astral.sh/uv/install.ps1 | iex"

Warning: Do not proceed before installing uv. Use the official installer — not pip install uv.

2. Add the MCP server to your client

{
    "mcpServers": {
        "blender": {
            "command": "uvx",
            "args": ["blender-mcp"]
        }
    }
}

claude mcp add blender uvx blender-mcp

See MCP Client Setup below for per-client instructions and one-click install buttons.

3. Install the Blender addon

uvx blender-mcp install-addon

Then in Blender: Edit → Preferences → Add-ons → enable Interface: Blender MCP.

4. Connect

In Blender's 3D viewport, press N → open the BlenderMCP tab → click Start MCP Server. That's it — ask Claude to build something.

Note: Only run one instance of the MCP server (either Cursor or Claude Desktop), not both.

Table of Contents

• Quickstart
• Features
• Components
• Installation
  • Prerequisites
  • Make your client find uvx
  • Pin the Python version
  • Install without uv
  • Environment Variables
• MCP Client Setup
  • Claude for Desktop
  • Cursor
  • Visual Studio Code
  • OpenCode
  • Antigravity
• Installing the Blender Addon
• Upgrading (existing users)
• Usage
  • Starting the Connection
  • Using with Claude
  • Capabilities
  • Example Commands
• Persistent API Credentials
• Troubleshooting
• Technical Details
• Limitations & Security Considerations
• Telemetry Control
• Feedback
• Contributing
• Disclaimer
• Star History

Features

Components

The system consists of two main components:

1. Blender Addon (addon.py) — a Blender addon that creates a socket server within Blender to receive and execute commands
2. MCP Server (src/blender_mcp/server.py) — a Python server that implements the Model Context Protocol and connects to the Blender addon

Installation

Prerequisites

• Blender 3.0 or newer
• Python 3.10 or newer
• uv package manager

macOS

brew install uv

Windows

powershell -c "irm https://astral.sh/uv/install.ps1 | iex"

Then add uv to the user path in Windows (you may need to restart Claude Desktop after):

$localBin = "$env:USERPROFILE\.local\bin"
$userPath = [Environment]::GetEnvironmentVariable("Path", "User")
[Environment]::SetEnvironmentVariable("Path", "$userPath;$localBin", "User")

Linux

curl -LsSf https://astral.sh/uv/install.sh | sh

It lands in ~/.local/bin — open a new shell so it's on your PATH.

Otherwise, installation instructions are on their website: Install uv

On every OS, use uv's official installer above — not pip install uv, which may not create the uvx command and can hide uv inside an environment your client can't see.

Warning: Do not proceed before installing uv.

Make your client find uvx

MCP clients started from a GUI (Claude Desktop, Cursor, VS Code from the Dock/Start menu) do not inherit your terminal's PATH, so a bare "command": "uvx" can fail with spawn uvx ENOENT even though uvx works in your terminal. If that happens:

• Find uvx's full path — which uvx (macOS/Linux) or where uvx (Windows) — and use it as "command", e.g. /opt/homebrew/bin/uvx or C:\Users\<you>\.local\bin\uvx.exe.
• On Windows you can instead wrap it: "command": "cmd", "args": ["/c", "uvx", "blender-mcp"].
• After any PATH or config change, fully quit and relaunch the client (Windows: quit from the system tray, not just the window; macOS: <kbd>Cmd</kbd>+<kbd>Q</kbd>).

Pin the Python version

Avoid conda / pyenv / version conflicts.

uv chooses which Python runs the server. On machines with conda (auto-activated base), pyenv, or asdf — or with a newer CPython release that some dependencies do not have wheels for yet — uv can grab an interpreter that makes installation fail. Pin Python 3.11 and prefer uv-managed interpreters to avoid using whatever is on your PATH:

{
    "mcpServers": {
        "blender": {
            "command": "uvx",
            "args": ["--python", "3.11", "blender-mcp"],
            "env": { "UV_PYTHON_PREFERENCE": "only-managed" }
        }
    }
}

--python 3.11 still satisfies this package's requires-python >=3.10, and UV_PYTHON_PREFERENCE=only-managed keeps uv from selecting conda, pyenv, asdf, or system Python first. (The repo's .python-version is only a hint for contributors and does not affect uvx.)

If a previous failed attempt keeps replaying after a fix, clear the cache:

uv cache clean blender-mcp && uvx --refresh blender-mcp

Install without uv

On locked-down machines you can skip uvx entirely with pipx, then point your client at the installed command:

pipx install blender-mcp
pipx ensurepath          # then restart your shell / client

Use the resulting absolute path as "command" (find it with which blender-mcp / where blender-mcp) and omit args.

Environment Variables

The following environment variables can be used to configure the Blender connection:

Example:

export BLENDER_HOST='host.docker.internal'
export BLENDER_PORT=9876

MCP Client Setup

Claude for Desktop

Watch the setup instruction video (assuming you have already installed uv)

Go to Claude → Settings → Developer → Edit Config → claude_desktop_config.json and include the following:

{
    "mcpServers": {
        "blender": {
            "command": "uvx",
            "args": [
                "blender-mcp"
            ]
        }
    }
}

Use the Claude Code CLI to add the blender MCP server:

claude mcp add blender uvx blender-mcp

Cursor

macOS — go to Settings → MCP and paste the following:

• To use as a global server, use the "add new global MCP server" button and paste
• To use as a project-specific server, create .cursor/mcp.json in the root of the project and paste

{
    "mcpServers": {
        "blender": {
            "command": "uvx",
            "args": [
                "blender-mcp"
            ]
        }
    }
}

Windows — go to Settings → MCP → Add Server, add a new server with the following settings:

{
    "mcpServers": {
        "blender": {
            "command": "cmd",
            "args": [
                "/c",
                "uvx",
                "blender-mcp"
            ]
        }
    }
}

Cursor setup video

Note: Only run one instance of the MCP server (either on Cursor or Claude Desktop), not both.

Visual Studio Code

Prerequisites: Make sure you have Visual Studio Code installed before proceeding.

OpenCode

{
  "mcp": {
    "blender-mcp": {
      "type": "local",
      "command": ["uvx", "blender-mcp"],
      "enabled": true,
      "environment": {
        "BLENDER_HOST": "localhost",
        "BLENDER_PORT": "9876"
      }
    }
  }
}

Antigravity

{
  "mcpServers": {
    "blender-mcp": {
      "command": "uvx",
      "args": ["blender-mcp"],
      "env": {
        "BLENDER_HOST": "localhost",
        "BLENDER_PORT": "9876"
      }
    }
  }
}

Installing the Blender Addon

1. Recommended — from a terminal, run:

uvx blender-mcp install-addon

This copies the addon into your Blender addons folder as blender_mcp.py. It prints where it wrote to, and keeps a .bak of any file it replaces.

Optional: uvx blender-mcp addon-paths lists detected Blender addons folders. Override the destination with BLENDERMCP_ADDONS_DIR=/path/to/scripts/addons.

2. Open Blender

3. Go to Edit → Preferences → Add-ons

4. Enable Interface: Blender MCP (search "Blender MCP"). If i

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