Before you start
- Sign in to Alter on your Mac.
- Install a ChatGPT desktop version that supports plugins and personal marketplaces.
- Keep your Mac online with Alter running while you use the connection.
Enable MCP Gateway in Alter
Open Gateways
Add and enable MCP Gateway
Choose allowed access

Enable MCP Gateway, save your changes, and wait for the connection to be ready.
Install the ChatGPT desktop plugin
Prepare the plugin in Alter

Use Install ChatGPT plugin to prepare the desktop connection.
Open Plugins in ChatGPT

Open Plugins using the sidebar icon marked by the arrow.
Enable Alter under Personal and Local

Choose Personal and Local, then click + beside Alter.
Run the first-time setup

Choose Set up Alter to check the connection for the first time.

Example successful connection check in Local mode. Tools are connected; event subscriptions are unavailable in this mode.
Select Alter in a new chat
List my recent meetings in Alter.ChatGPT may ask you to approve a tool before it runs. If the list is empty, try a meeting you have saved in Alter or check the access settings below.
Choose what ChatGPT can access
Change these switches under Allowed access in MCP Gateway:
Choose which meeting, action, and conversation capabilities ChatGPT can use.
Receive new-meeting notifications
Installing the plugin does not automatically create a ChatGPT event subscription for meetings.Allow notifications
Ask ChatGPT to subscribe
Subscribe to Alter’s transcript-ready event. When a meeting transcript is ready, summarize the decisions and my action items.Confirm that ChatGPT creates an active event subscription to
meeting.transcript_ready. A connected plugin alone does not confirm an event subscription.Record or import a meeting
Connect with a remote MCP URL
For agent-neutral setup and supported capabilities, see Connect an AI agent with Remote MCP. For ChatGPT on the web, or if personal marketplaces are unavailable:- In Alter’s MCP Gateway, choose Copy connection URL.
- In ChatGPT’s Plugins page, choose Add custom MCP server.
- Name it Alter, paste the URL, and choose No authentication.
- Create and install the connection, then select Alter in a new Work chat.