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The allGood Marketo MCP server lets you work with Marketo directly from the classic ChatGPT desktop app: look up programs, emails, forms, and templates, clone campaigns, and upload assets to Design Studio. This setup takes about 5 minutes.

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Before you begin

You’ll need:
  • The ChatGPT desktop app (classic app, macOS or Windows), signed in
  • An allGood account with access to the Marketo integration
  • The allGood Marketo MCP server URL: https://api.allgoodhq.app/mcp/marketo
On a Business, Enterprise, or Edu workspace, an admin may need to turn on custom connectors first. Admins can find the steps in Roll out the Marketo MCP to your organization. Already see allGood Marketo under Plugins? On a Business, Enterprise, or Edu workspace, your admin may have added it for everyone. If it’s there, skip ahead to the Authenticate step.

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Steps

1

Find the Plugin Section

  1. Open the ChatGPT desktop app
  2. Click your profile icon and go to Settings
  3. Select Plugins in the left sidebar
ChatGPT Settings window with the Plugins section selected

ChatGPT Settings window with the Plugins section selected

2

Add an MCP server

  1. Scroll to the top and click Add > Add MCP Server
Plugins section showing the Add MCP Server button

Plugins section showing the Add MCP Server button

3

Enter the connector details

  1. In Name, enter allGood Marketo
  2. Set Type to Streamable HTTP
  3. In MCP Server URL, enter https://api.allgoodhq.app/mcp/marketo, then click Save
Create connector dialog with name, URL, and type fields filled in

Create connector dialog with name, URL, and type fields filled in

4

Authenticate

  1. Click Authenticate on the new allGood Marketo connector
Plugins list showing the allGood Marketo connector with an Authenticate button

Plugins list showing the allGood Marketo connector with an Authenticate button

5

Authorize access

  1. In the browser window that opens, log into your allGood account
  2. Review the requested permissions and click Allow
  3. When the window closes, check that the connector shows Connected
6

Test the connector in a chat

  1. Start a new chat in ChatGPT
  2. Select allGood Marketo from the list of available Plugins
  3. Test the connection by asking ChatGPT something like:
“Using allGood Marketo, look up the program details for [program name].”
When the connection works, you’ll see ChatGPT return Marketo data for the program you asked about. allGood Marketo also shows Connected in your Plugins list. If you’re still stuck, contact allGood support and tell us which step failed.