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The allGood Marketo MCP server brings Mary’s Marketo capabilities — looking up programs, emails, forms, and templates, cloning campaigns, uploading assets to Design Studio — directly into the classic ChatGPT desktop app. 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

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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

Create a new connector

  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

  1. Fill in the connector details:
    • Name: allGood Marketo
    • Type: Streamable HTTP
    • MCP Server URL: https://api.allgoodhq.app/mcp/marketo
  2. Click Save
Create connector dialog with name, URL, and type fields filled in

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

3

Connect and 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

  1. A browser window opens and prompts you to log into your allGood account
  2. Review the requested permissions and click Allow
  3. Once authorized, the window closes and the connector shows as Connected
4

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].”
If ChatGPT returns Marketo data, the connection is working correctly.