Blender MCP Skill

This skill enables OpenClaw to control Blender through the BlenderMCP Model Context Protocol integration.

Prerequisites

1. Blender installed and running
2. BlenderMCP addon installed in Blender
3. blender-mcp Python package installed via uvx

Usage

Starting the Connection

1. In Blender:

   • Open Blender
   • Press N to show the 3D View sidebar
   • Go to "BlenderMCP" tab
   • Click "Connect to Claude" to start the socket server on localhost:9876

2. In OpenClaw:

   • Use the start-server script to start the MCP server
   • Or run uvx blender-mcp manually

Available Commands

The following tools are available through BlenderMCP:

• get_scene_info - Get detailed information about the current Blender scene
• create_object - Create a new 3D object (cube, sphere, cylinder, etc.)
• delete_object - Delete an existing object
• modify_object - Modify object properties (location, rotation, scale, etc.)
• set_material - Create/assign a material to an object
• execute_code - Execute arbitrary Python code in Blender
• get_screenshot - Get a screenshot of the current viewport
• download_asset_polyhaven - Download assets from Poly Haven
• search_sketchfab - Search and download models from Sketchfab
• generate_model_3d - Generate 3D models using Hyper3D Rodin AI

Example Prompts

• "Create a low poly dungeon scene with a dragon guarding gold"
• "Make a red metallic sphere on top of a cube"
• "Create a studio lighting setup and point the camera at the scene"
• "Get a screenshot of the current scene"
• "Download a grass texture from Poly Haven and apply it to the ground"

Scripts

• scripts/start-server.sh - Start the Blender MCP server
• scripts/test-connection.py - Test connection to Blender

Configuration

By default, connects to:

• Host: localhost
• Port: 9876

To change, set environment variables:

export BLENDER_HOST=your-host
export BLENDER_PORT=your-port

Troubleshooting

1. Connection refused: Make sure Blender is running and the addon is connected
2. Timeout errors: Break large requests into smaller steps
3. Unknown command: Restart both Blender addon and MCP server