Sweet Home 3D MCP Server

What is this MCP

This MCP is a plugin for Sweet Home 3D that embeds an HTTP server directly within the home design application. It enables AI assistants like Claude to control Sweet Home 3D programmatically through JSON-RPC 2.0 over HTTP, allowing for automated creation and modification of 3D home designs.

How to use this MCP

Install the plugin by downloading the .sh3p file and placing it in Sweet Home 3D's plugins folder. The MCP server starts automatically on port 9877 when Sweet Home 3D launches. Configure Claude Desktop or Claude Code to connect to http://localhost:9877/mcp, then use any of the 42 available commands to create walls, place furniture, render photos, export files, and manage the entire 3D scene.

What this MCP can be used for

This MCP enables AI-assisted home design automation, allowing for rapid prototyping of floor plans, automated furniture placement, batch scene modifications, and integration of Sweet Home 3D into larger AI workflows. It's useful for architects, interior designers, real estate professionals, and anyone needing to generate or modify 3D home designs programmatically.