DatummDatumm

Documentation

Getting Started with Datum

Datum connects your Revit session to an AI Copilot that can design, modify, and inspect building models in natural language.

Requirements

  • Autodesk Revit 2022, 2023, 2024, 2025, or 2026
  • Windows 10 or later
  • Signup to Datum
1

Download the Plugin

The Datum Revit Plugin must be installed on the same machine running Autodesk Revit. It routes AI-generated commands through a secure cloud relay directly into your Revit session.

Revit MCP Plugin

v4.5.6 · Windows · Revit 2022 – 2025

Installs as a Revit add-in. No copy-paste — commands execute directly inside your open project.

Download for Windows (.exe)
2

Install the Plugin

Close Revit before running the installer. Then run revit-mcp-plugin-setup-v4.5.6.exe and follow the prompts. The plugin will register itself with your Revit installation automatically.

Restart Revit after installation completes.

3

Enable in Revit

  1. 1.Open Autodesk Revit and open any project.
  2. 2.Click the Add-ins tab in the ribbon.
  3. 3.Find Revit MCP and toggle it ON.
4

Connect via Relay Token

Datum uses a secure cloud relay to link your browser session to Revit. Generate a token in the Copilot and paste it into the plugin.

  1. 1.Open the Datum Copilot.
  2. 2.Click the Revit button in the top-right toolbar.
  3. 3.Click Generate relay token.
  4. 4.Copy the Relay URL and the Pairing token.
  5. 5.In Revit's Revit MCP plugin, click Settings and paste both values.
  6. 6.The badge in Datum should change to Plugin connected.
5

Start Building

Type a message in the Copilot chat. For example:

“Design a 2BHK with a living room, kitchen, two bedrooms, and two bathrooms”
“Add a door to the north wall of the master bedroom”
“What elements are currently selected in my Revit model?”

Troubleshooting

Plugin shows "Disconnected" after pasting token

Ensure the Revit MCP toggle is ON in the Add-ins tab, and that your relay token has not expired. Tokens expire after 7 days — regenerate one from the Revit menu in Datum.

I don't see the Add-ins tab

Make sure you ran the installer with Revit closed. Restart Revit and try again.

Commands execute but nothing appears in Revit

Open a Revit project (not just the start screen) before sending commands. The plugin requires an active document.

I get a firewall or network error

The cloud relay communicates over HTTPS on port 443. Ensure your network allows outbound HTTPS traffic.

Open CopilotContact Support