add environment variables configuration for Blender connection host and port

README.md

@@ -85,6 +85,18 @@ Otherwise installation instructions are on their website: [Install uv](https://d
 
 **⚠️ Do not proceed before installing UV**
 
+### Environment Variables
+
+The following environment variables can be used to configure the Blender connection:
+
+- `BLENDER_HOST`: Host address for Blender socket server (default: "localhost")
+- `BLENDER_PORT`: Port number for Blender socket server (default: 9876)
+
+Example:
+```bash
+export BLENDER_HOST='host.docker.internal'
+export BLENDER_PORT=9876
+```
 
 ### Claude for Desktop Integration
 

src/blender_mcp/server.py

@@ -18,6 +18,10 @@ logging.basicConfig(level=logging.INFO,
                     format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
 logger = logging.getLogger("BlenderMCPServer")
 
+# Default configuration
+DEFAULT_HOST = "localhost"
+DEFAULT_PORT = 9876
+
 @dataclass
 class BlenderConnection:
     host: str
@@ -226,7 +230,9 @@ def get_blender_connection():
     
     # Create a new connection if needed
     if _blender_connection is None:
-        _blender_connection = BlenderConnection(host="localhost", port=9876)
+        host = os.getenv("BLENDER_HOST", DEFAULT_HOST)
+        port = int(os.getenv("BLENDER_PORT", DEFAULT_PORT))
+        _blender_connection = BlenderConnection(host=host, port=port)
         if not _blender_connection.connect():
             logger.error("Failed to connect to Blender")
             _blender_connection = None