Editor: Open Source 3D Architectural Editor With Local CLI

TL;DR

TL;DR: pascalorg/editor is an open source 3D architectural editor with a twist — it ships a local CLI and Model Context Protocol (MCP) tools, so both humans and AI agents can drive it. You get a 3D editor for architecture, plus a programmatic surface that lets your coding agent lay out walls, place windows, and inspect the model.

What Is the Editor?

The repository description: “Open-source 3D architectural editor with a local CLI, MCP tools, and practical workflows for humans and AI agents.” The project sits in the same category as ArmorPaint — open source tooling for 3D — but with a different target domain. Where ArmorPaint is about textures, this editor is about architecture.

The topics — 3d, agent-skills, ai-agents, architecture — confirm the dual audience. The editor is built for humans who model buildings, and for AI agents who model buildings programmatically through the CLI and MCP surface.

How It Works

The TypeScript codebase runs as a local app with a CLI alongside the GUI. The architecture implied by the description is:

• A 3D scene graph that represents the architectural model — walls, floors, openings, stories, etc.
• A local CLI that exposes the scene graph to scripts and other tools.
• MCP tools that wrap the CLI in a protocol agents understand, so a coding agent can drive the editor through conversation.
• A GUI for humans that reads the same scene graph.

The practical workflow angle is the differentiator. The project is not trying to be a generic 3D editor — it is trying to be the architectural editor you can script and the architectural editor your agent can use.

Repo Facts

• Repository: pascalorg/editor
• Language: TypeScript
• License: MIT
• Stars at time of writing: 23,628
• Topics: 3d, agent-skills, ai-agents, architecture

When To Use It

The Editor is the right tool when:

• You want an open source 3D editor focused on architecture, not a generic DCC.
• You want to drive the editor from a CLI or from an AI agent via MCP.
• You are comfortable building your own workflow on top of the editor’s primitives.

It is not a Blender replacement for general 3D work, it is not a CAD system with engineering-grade precision, and it is not a turnkey architectural design tool. It is a focused editor with an open programmatic surface.

Source and Accuracy Notes

• Project page: https://github.com/pascalorg/editor
• Source repository: pascalorg/editor (verified via GitHub API html_url)
• License: MIT (verified via GitHub API license.spdx_id)
• Stars at time of writing: 23,628
• The Model Context Protocol (MCP) is referenced as a third-party protocol; verify the project’s current MCP server implementation and supported tools before wiring it into an agent.