how-to-guide

How to Configure BLENDER_HOST and BLENDER_PORT Environment Variables in Blender-MCP

April 13, 2026 ahujasid/blender-mcp ↗

The blender-mcp server reads BLENDER_HOST and BLENDER_PORT environment variables to determine the target Blender instance address, defaulting to localhost:9876 when unset.

The blender-mcp project provides a Model Context Protocol (MCP) server that bridges AI assistants with Blender. To establish the socket connection, the server relies on BLENDER_HOST and BLENDER_PORT environment variables to locate the Blender add-on's listening socket. These values are evaluated at runtime in `src/blender_mcp/server.py

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{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
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