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ChatGPT connects to AdLoop Cloud (remote MCP servers) as a custom plugin. Custom plugins are available on paid ChatGPT plans and need developer mode, which moved to the security settings (checked 2026-09-16).
1

Turn on developer mode

Settings → Security and login → Developer mode (marked “elevated risk”: it allows unverified connectors). Once per account.
2

Open Plugins

In the ChatGPT sidebar click Plugins (or go to chatgpt.com/plugins), then the + button at the top right: New Plugin.
3

Describe the server

Name it AdLoop. Connection: Server URL with
Authentication: OAuth (leave the advanced settings alone; ChatGPT discovers them from the server). Tick I understand and want to continue under the custom-server warning and click Create.
4

Authorize

ChatGPT shows an “Add AdLoop to ChatGPT” card: click Sign in with AdLoop. AdLoop’s consent page opens in a new tab; sign in to your workspace and choose Allow access. The token is issued to chatgpt.com only and the tab closes by itself.
5

Use it in a chat

Click + next to the message box and pick AdLoop (or type its name). Then ask: “Run the AdLoop health check.”

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After an AdLoop update

ChatGPT remembers AdLoop’s tool list from when you connected it. When AdLoop adds tools, they only show up after a refresh: open AdLoop on the Plugins page and refresh it there. If your version offers no refresh, delete the plugin and create it again with the same URL; you sign in once more. Not sure whether yours is current? Ask: “Run the AdLoop health check.” It lists the tools AdLoop offers you and says so when your app is showing an older list.

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Agencies

A ChatGPT connection is workspace-wide, not tied to one of your clients. Name the client in your request (“for Kersten Coating, how did last week go?”) or let the assistant ask; it gets your client list with their account ids when a request doesn’t say.

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OpenAI Agent Builder

In a workspace agent (Business plans), add AdLoop as an MCP tool with the same server URL and OAuth authentication; the consent flow is identical.

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Notes

  • ChatGPT moves this around: before September 2026 it lived under Settings → Connectors → Advanced. If the Plugins page or the developer-mode switch look different, search settings for “plugin”, “developer” or “MCP”.
  • ChatGPT asks before a plugin’s write actions (Settings → Plugins → Permissions); AdLoop previews and dry-runs every write on top of that.
  • Every write goes through the preview and confirm flow regardless of client, so an over-eager agent can’t apply anything without you.
Your AI can read these docs too. Add https://docs.getadloop.com/mcp as an additional MCP server and your assistant can search this documentation while it works: setup answers, troubleshooting, and tool guidance on demand.