Blender Open MCP

# blender-open-mcp `blender-open-mcp` is an open source project that integrates Blender with local AI models (via [Ollama](https://ollama.com/)) using the Model Context Protocol (MCP). This allows you to control Blender using natural language prompts, leveraging the power of AI to assist with 3D modeling tasks. ## Features - **Control Blender with Natural Language:** Send prompts to a locally running Ollama model to perform actions in Blender. - **MCP Integration:** Uses the Model Context Protocol for structured communication between the AI model and Blender. - **Ollama Support:** Designed to work with Ollama for easy local model management. - **Blender Add-on:** Includes a Blender add-on to provide a user interface and handle communication with the server. - **PolyHaven Integration (Optional):** Download and use assets (HDRIs, textures, models) from [PolyHaven](https://polyhaven.com/) directly within Blender via AI prompts. - **Basic 3D Operations:** - Get Scene and Object Info - Create Primitives - Modify and delete objects - Apply materials - **Render Support:** Render images using the tool and retrieve information based on the output. ## Installation ### Prerequisites 1. **Blender:** Blender 3.0 or later. Download from [blender.org](https://www.blender.org/download/). 2. **Ollama:** Install from [ollama.com](https://ollama.com/), following OS-specific instructions. 3. **Python:** Python 3.10 or later. 4. **uv:** Install using `pip install uv`. 5. **Git:** Required for cloning the repository. ### Installation Steps 1. **Clone the Repository:** ```bash git clone https://github.com/dhakalnirajan/blender-open-mcp.git cd blender-open-mcp ``` 2. **Create and Activate a Virtual Environment (Recommended):** ```bash uv venv source .venv/bin/activate # On Linux/macOS .venv\Scripts\activate # On Windows ``` 3. **Install Dependencies:** ```bash uv pip install -e . ``` 4. **Install the Blender Add-on:** - Open Blender. - Go to `Edit -> Preferences -> Add-ons`. - Click `Install...`. - Select the `addon.py` file from the `blender-open-mcp` directory. - Enable the "Blender MCP" add-on. 5. **Download an Ollama Model (if not already installed):** ```bash ollama run llama3.2 ``` *(Other models like **`Gemma3`** can also be used.)* ## Setup 1. **Start the Ollama Server:** Ensure Ollama is running in the background. 2. **Start the MCP Server:** ```bash blender-mcp ``` Or, ```bash python src/blender_open_mcp/server.py ``` By default, it listens on `http://0.0.0.0:8000`, but you can modify settings: ```bash blender-mcp --host 127.0.0.1 --port 8001 --ollama-url http://localhost:11434 --ollama-model llama3.2 ``` 3. **Start the Blender Add-on Server:** - Open Blender and the 3D Viewport. - Press `N` to open the sidebar. - Find the "Blender MCP" panel. - Click "Start MCP Server". ## Usage Interact with `blender-open-mcp` using the `mcp` command-line tool: ### Example Commands - **Basic Prompt:** ```bash mcp prompt "Hello BlenderMCP!" --host http://localhost:8000 ``` - **Get Scene Information:** ```bash mcp tool get_scene_info --host http://localhost:8000 ``` - **Create a Cube:** ```bash mcp prompt "Create a cube named 'my_cube'." --host http://localhost:8000 ``` - **Render an Image:** ```bash mcp prompt "Render the image." --host http://localhost:8000 ``` - **Using PolyHaven (if enabled):** ```bash mcp prompt "Download a texture from PolyHaven." --host http://localhost:8000 ``` ## Available Tools | Tool Name | Description | Parameters | | -------------------------- | -------------------------------------- | ----------------------------------------------------- | | `get_scene_info` | Retrieves scene details. | None | | `get_object_info` | Retrieves information about an object. | `object_name` (str) | | `create_object` | Creates a 3D object. | `type`, `name`, `location`, `rotation`, `scale` | | `modify_object` | Modifies an object’s properties. | `name`, `location`, `rotation`, `scale`, `visible` | | `delete_object` | Deletes an object. | `name` (str) | | `set_material` | Assigns a material to an object. | `object_name`, `material_name`, `color` | | `render_image` | Renders an image. | `file_path` (str) | | `execute_blender_code` | Executes Python code in Blender. | `code` (str) | | `get_polyhaven_categories` | Lists PolyHaven asset categories. | `asset_type` (str) | | `search_polyhaven_assets` | Searches PolyHaven assets. | `asset_type`, `categories` | | `download_polyhaven_asset` | Downloads a PolyHaven asset. | `asset_id`, `asset_type`, `resolution`, `file_format` | | `set_texture` | Applies a downloaded texture. | `object_name`, `texture_id` | | `set_ollama_model` | Sets the Ollama model. | `model_name` (str) | | `set_ollama_url` | Sets the Ollama server URL. | `url` (str) | | `get_ollama_models` | Lists available Ollama models. | None | ## Troubleshooting If you encounter issues: - Ensure Ollama and the `blender-open-mcp` server are running. - Check Blender’s add-on settings. - Verify command-line arguments. - Refer to logs for error details. For further assistance, visit the [GitHub Issues](https://github.com/dhakalnirajan/blender-open-mcp/issues) page. --- Happy Blending with AI! 🚀