Pascal Editor: a free 3D building editor that AI agents can drive through MCP, 25,000 GitHub stars
It is an open-source 3D architectural editor with a local CLI and MCP tools. The team says it is exploring facility management and infrastructure, and its hosted preview shows the structure and systems behind the walls, which is not yet in the open-source release.
For facility teams and owner's reps: quick walkable building models without a full BIM seat.