> ## Documentation Index
> Fetch the complete documentation index at: https://docs.realtimelca.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ArchiCAD

> Publish ArchiCAD projects to Real-Time LCA through the Speckle Connector for ArchiCAD.

Use the **Speckle Connector for ArchiCAD** to publish your model to a Speckle stream that a Real-Time LCA project listens to.

## Prerequisites

* An ArchiCAD version supported by the Speckle Connector.
* Your Real-Time LCA **Speckle credentials** for `https://api.realtimelca.com` (sent by email when you activated your account — see [Introduction to Speckle](/user-guide/integrations/speckle)).
* A Real-Time LCA project configured with a Speckle Connection (see [Create a new project](/user-guide/project/create-new-project)).

## Install the connector

Download the Speckle Connector for ArchiCAD from [releases.speckle.systems](https://releases.speckle.systems/) and follow the installer instructions. After restarting ArchiCAD, the connector is available from the **Tools** menu.

## Publish a model

1. Open your ArchiCAD project.
2. Launch the Speckle Connector and sign in to the Real-Time LCA Speckle server (`https://api.realtimelca.com`).
3. Pick the **project** and **model** that matches your Real-Time LCA project's stream.
4. Select the elements to publish.
5. Click **Publish** — Real-Time LCA picks up the new version automatically.

## Parameter mapping

Make sure the parameter Real-Time LCA uses to group elements (by default `BIMTypeCode`) is populated on your ArchiCAD elements before publishing.