3D New Era AI

English · Português (Brasil) · Website · Try it in the browser

An open-source home design, floor plan and interior design editor written in Rust, built so that your AI can design with you. It ships with a Model Context Protocol server: Claude, ChatGPT, Codex, Gemini, Cursor or any other MCP client draws the walls, furnishes the rooms, builds the joinery, checks lighting and ergonomics against real standards and renders the photos, while every change shows up live on screen and is one Ctrl+Z away.

A Sweet Home 3D alternative for Windows, macOS, Linux and the browser, in English, Portuguese, Spanish and French.

Three ways to use it

| | What you get | Account | |---|---|---| | Desktop app | The full editor on your machine, with a local MCP server at 127.0.0.1:7878. Nothing leaves your computer. | none | | Browser editor | The same editor in a tab (WebGPU or WebGL). Switch on its MCP and your AI edits the tab's project. | none | | Hosted connector | Add https://mcp.3dneweraai.com/mcp to Claude or ChatGPT and design from the chat, with projects kept in your account. | email sign-in |

The desktop app and the browser editor are free, open source and need no account. The hosted connector is free too, with no limits.

Install

Windows — in PowerShell:

irm https://raw.githubusercontent.com/leandrodaf/3d-new-era-ai/main/scripts/install-windows.ps1 | iex

macOS (Apple Silicon and Intel) — in Terminal:

curl -fsSL https://raw.githubusercontent.com/leandrodaf/3d-new-era-ai/main/scripts/install-macos.sh | bash

or with Homebrew: brew install --cask leandrodaf/tap/3d-new-era-ai.

The installers work for your user only, with no administrator password: the app appears in the Start menu or Launchpad, newera goes on your PATH, the MCP server is registered in Claude Code and Codex if you have them, and running the same command again updates it. Uninstall with install-macos.sh --uninstall, or from Settings → Apps on Windows.

On Windows, it is also in the Microsoft Store:

Prefer a plain download?

| Windows (x64) | macOS Apple Silicon | macOS Intel | Linux (x64) | |:---:|:---:|:---:|:---:|

<details> <summary>First launch of a plain download</summary>

The builds are not signed with a paid Apple or Microsoft certificate, so the system asks once:

• Windows: unzip and open newera-gui.exe; if SmartScreen appears, click More info → Run anyway.
• macOS: unzip and move 3D New Era AI to Applications, then right-click it → Open → Open. On macOS 15 and later, open it once, then go to System Settings → Privacy & Security → Open Anyway, or run xattr -dr com.apple.quarantine "/Applications/3D New Era AI.app".
• Linux: tar xzf newera-linux-x64.tar.gz && ./newera/newera. Run ./newera/install-desktop.sh to add the menu entry, the icon and the .newera file type (--uninstall undoes it). It needs glibc 2.35 or newer: Ubuntu 22.04, Debian 12, Fedora 36 or any later release.

The one-line installers skip these prompts.

</details>

Connect your AI

Hosted, nothing to install. In Claude or ChatGPT, add a custom connector with the address https://mcp.3dneweraai.com/mcp and sign in with your email. Step by step: https://3dneweraai.com/connector/.

With the desktop app. The editor serves MCP at http://127.0.0.1:7878/mcp while it is open (or run newera serve for no window). The AI menu, or the MCP chip in the status bar, shows the snippet for your client, can register it for you, and lists the tools the agent calls as it calls them.

From a browser tab. Open https://3dneweraai.com/app/ and switch the MCP on in the AI panel (Ctrl+Shift+M). The tab gets an address your AI can reach through a small relay, because a tab cannot listen on a port. The relay passes messages and stores nothing; the project stays in the tab, and the address stops answering when you switch it off or close the tab. Treat that address like a password. Video rendering is not offered there, since it would hold the tab for minutes.

Then just ask, for example: "Draw a 4 × 5 m bedroom with a door and a window, furnish it and render a photo."

Client setup

One click, with the app installed:

Claude Desktop: download newera-mcp.mcpb from the latest release and open it.

Plugins with skills:

| Client | Command | |---|---| | Claude Code | /plugin marketplace add leandrodaf/3d-new-era-ai, then /plugin install 3d-new-era-ai-desktop@3d-new-era-ai (the app on your screen) or /plugin install 3d-new-era-ai@3d-new-era-ai (hosted) | | Codex | codex plugin marketplace add leandrodaf/3d-new-era-ai | | Gemini CLI | gemini extensions install https://github.com/leandrodaf/3d-new-era-ai |

<details> <summary>Manual setup for each client</summary>

Claude Code (already set up inside a clone of this repository by .mcp.json)

claude mcp add --transport http newera http://127.0.0.1:7878/mcp

Codex CLI

codex mcp add newera --url http://127.0.0.1:7878/mcp

Gemini CLI

gemini mcp add --transport http newera http://127.0.0.1:7878/mcp

VS Code (Copilot agent mode)

code --add-mcp '{"name":"newera","type":"http","url":"http://127.0.0.1:7878/mcp"}'

Cursor — ~/.cursor/mcp.json

{ "mcpServers": { "newera": { "url": "http://127.0.0.1:7878/mcp" } } }

Windsurf — ~/.codeium/windsurf/mcp_config.json

{ "mcpServers": { "newera": { "serverUrl": "http://127.0.0.1:7878/mcp" } } }

Claude Desktop without the bundle — Settings → Developer → Edit Config (needs Node.js for the mcp-remote bridge)

{ "mcpServers": { "newera": { "command": "npx", "args": ["-y", "mcp-remote", "http://127.0.0.1:7878/mcp"] } } }

DeepSeek, Qwen, Llama and other models — the model does not matter, the app you chat in does. Use one that speaks MCP: Cline or Roo Code in VS Code, Cherry Studio, LM Studio or opencode (opencode.json):

{ "mcp": { "newera": { "type": "remote", "url": "http://127.0.0.1:7878/mcp" } } }

Any other client — Streamable HTTP at http://127.0.0.1:7878/mcp, or stdio for clients that start a process:

{ "mcpServers": { "newera": { "command": "newera", "args": ["mcp"] } } }

Over stdio, with the editor open the agent edits the plan in that window; with no window (or newera mcp --standalone) it works on a project of its own.

</details>

Showcase

A real 105 m² apartment, traced from an openly licensed floor plan and furnished, lit and photographed by an AI agent through MCP alone: walls from the scan, doors that swing the right way, a slatted TV wall, an L kitchen and wardrobes from cabinet_run, downlights sized by photometry against NBR ISO/CIE 8995-1, and path-traced photos. Every image below came out of the editor. See how it was built →

| Floor plan with real finishes | Aerial cutaway | |---|---| | | |

| Daylight | At dusk, lamps on | |---|---| | | | | | | | | |

| Joinery and rooms | | |---|---| | | | | | |

Features

• Plans from anything. Draw walls, arcs and sloping walls, or drop in a scanned plan at real scale and let background find the walls. Opens Sweet Home 3D (.sh3d) projects as they are.
• Joinery a workshop can build. Parametric cabinets, wardrobes, slatted panels, countertops with exact sink and cooktop cutouts, plaster coves with LED and modular sofas. cabinet_run fills a wall with even modules around doors, windows and corners; cut_list exports the boards as CSV or DXF/SVG sheets.
• Checked against the people who live there. An ergonomics review (circulation, beds and bathrooms per person, the kitchen triangle, wheelchair turning space) and lux per room by photometry, each finding tied to its source and with the fix ready to apply.
• Electrical and plumbing plans over the same floor plan: circuits and panel, Wi-Fi coverage, runs and checks against NBR 5410, NBR 5626 and NBR 8160.
• Pictures that sell the project. Rendered floor plans with real finishes, elevations and sections, aerial cutaways, path-traced photos with the sun from the compass and the lamps you placed, and videos along a camera path. They render on the CPU, so a headless server can take them too.
• Roofs and structure. Pitched roofs with skylights, walls and glass that follow the roof above, beams, storeys, pools and decks.
• Furniture always true to size. The catalog is generated by code, so a 158 × 208 cm bed is exactly that in the plan, in 3D and in collision checks.
• Try alternatives safely. Duplicate the plan into a new tab, change it and compare versions side by side; name checkpoints and come back to them.
• **B