BlenderMCP

Instructions

Implementation Reference

• src/blender_mcp/server.py:367-415 (handler)

  Handler function for the search_polyhaven_assets tool. It is registered via the @mcp.tool() decorator and implements the tool logic by sending a command to the Blender addon via the persistent connection, then formatting and returning the results.
  @mcp.tool() def search_polyhaven_assets( ctx: Context, asset_type: str = "all", categories: str = None ) -> str: """ Search for assets on Polyhaven with optional filtering. Parameters: - asset_type: Type of assets to search for (hdris, textures, models, all) - categories: Optional comma-separated list of categories to filter by Returns a list of matching assets with basic information. """ try: blender = get_blender_connection() result = blender.send_command("search_polyhaven_assets", { "asset_type": asset_type, "categories": categories }) if "error" in result: return f"Error: {result['error']}" # Format the assets in a more readable way assets = result["assets"] total_count = result["total_count"] returned_count = result["returned_count"] formatted_output = f"Found {total_count} assets" if categories: formatted_output += f" in categories: {categories}" formatted_output += f"\nShowing {returned_count} assets:\n\n" # Sort assets by download count (popularity) sorted_assets = sorted(assets.items(), key=lambda x: x[1].get("download_count", 0), reverse=True) for asset_id, asset_data in sorted_assets: formatted_output += f"- {asset_data.get('name', asset_id)} (ID: {asset_id})\n" formatted_output += f" Type: {['HDRI', 'Texture', 'Model'][asset_data.get('type', 0)]}\n" formatted_output += f" Categories: {', '.join(asset_data.get('categories', []))}\n" formatted_output += f" Downloads: {asset_data.get('download_count', 'Unknown')}\n\n" return formatted_output except Exception as e: logger.error(f"Error searching Polyhaven assets: {str(e)}") return f"Error searching Polyhaven assets: {str(e)}"