Sweet Home 3D
Sweet Home 3D plugin that embeds an MCP server — lets Claude control Sweet Home 3D over HTTP
What is Sweet Home 3D?
Sweet Home 3D is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to sweet home 3d plugin that embeds an mcp server — lets claude control sweet home 3d over http
Sweet Home 3D plugin that embeds an MCP server — lets Claude control Sweet Home 3D over HTTP
This server falls under the Browser Automation category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- Sweet Home 3D plugin that embeds an MCP server — lets Claude
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx sweethome3dConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Sweet Home 3D
The Sweet Home 3D MCP Server is a plugin that embeds an HTTP MCP server directly inside the Sweet Home 3D interior design application, allowing Claude and other AI assistants to create rooms, place furniture, apply textures, set cameras, and render photos programmatically. It exposes 42 design commands over a local HTTP endpoint on port 9877.
Prerequisites
- Sweet Home 3D 7.x or later installed on Windows, macOS, or Linux
- Claude Desktop or another MCP-compatible client that supports HTTP (streamable-http) transport
- Java 11 or later (typically bundled with Sweet Home 3D)
- The MCP plugin .sh3p file downloaded from the GitHub releases page
Download the plugin file
Go to the GitHub releases page at https://github.com/grimashevich/sweethome3d-mcp-server/releases and download the latest .sh3p plugin file.
Install the plugin into Sweet Home 3D
Copy the downloaded .sh3p file to your Sweet Home 3D plugins directory, then restart the application. The plugin directory location depends on your operating system.
# Windows
%APPDATA%\eTeks\Sweet Home 3D\plugins\
# macOS
~/Library/Application Support/eTeks/Sweet Home 3D/plugins/
# Linux
~/.sweethome3d/plugins/Verify the server is running
After restarting Sweet Home 3D, navigate to Tools > MCP Server... in the menu. The dialog will confirm the server is active on port 9877. You can also use the auto-configure button to write the Claude Desktop config automatically.
Configure Claude Desktop
Add the HTTP-based MCP server entry to your claude_desktop_config.json. The server uses HTTP transport, not stdio.
Start designing with Claude
Open a Sweet Home 3D project and start a conversation with Claude. The AI can now create walls, rooms, place furniture from the catalog, and render photo-realistic images on your behalf.
Sweet Home 3D Examples
Client configuration
Add this to your claude_desktop_config.json. The server uses HTTP transport connecting to the locally running Sweet Home 3D plugin.
{
"mcpServers": {
"sweethome3d": {
"type": "http",
"url": "http://localhost:9877/mcp"
}
}
}Prompts to try
Use these with Claude once Sweet Home 3D is open and the plugin is running.
- "Create a rectangular room 6 meters wide by 8 meters long with 2.5 meter walls"
- "Place a sofa from the furniture catalog in the center of the living room"
- "Apply a hardwood floor texture to the main room"
- "Set the camera to a top-down view and export the floor plan as an image"
- "Render a photo of the current scene from the main camera angle"Troubleshooting Sweet Home 3D
Claude cannot connect to the MCP server
Ensure Sweet Home 3D is open and the plugin is loaded. Check Tools > MCP Server... to confirm the server is running on port 9877. If another application is using port 9877, the plugin may fail to bind — check for port conflicts with 'lsof -i :9877' on macOS/Linux.
Plugin does not appear in the Tools menu after installation
Confirm the .sh3p file is in the correct plugins directory for your OS and that you fully restarted Sweet Home 3D (not just closed a project). Also verify the file was not renamed or corrupted during download.
Furniture placement uses wrong coordinates
Sweet Home 3D uses centimeters as its coordinate unit (500 = 5 meters). The X-axis points right and the Y-axis points downward. Specify all dimensions to Claude in meters and it will convert appropriately, or provide raw centimeter values for precision.
Frequently Asked Questions about Sweet Home 3D
What is Sweet Home 3D?
Sweet Home 3D is a Model Context Protocol (MCP) server that sweet home 3d plugin that embeds an mcp server — lets claude control sweet home 3d over http It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Sweet Home 3D?
Follow the installation instructions on the Sweet Home 3D GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Sweet Home 3D?
Sweet Home 3D works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Sweet Home 3D free to use?
Yes, Sweet Home 3D is open source and available under the GPL-2.0 license. You can use it freely in both personal and commercial projects.
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Set Up Sweet Home 3D in Your Editor
Choose your AI client for step-by-step setup instructions.
Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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