# Connect ChatGPT (developer mode) to HighLevel (GHL): Setup, Business Dashboard & App Integrations

> ChatGPT adds custom MCP servers as apps in Developer mode. Because HighLevel's MCP server uses header authentication and ChatGPT expects a URL with OAuth, you connect it through a header bridge or a catalog plugin like Composio.

Last verified: October 25, 2026 · Source page: https://ghlfounders.com/agents/chatgpt

## Key facts
| Fact | ChatGPT (developer mode) |
| --- | --- |
| Maker | OpenAI |
| Type | Chat assistants |
| Launched | Developer mode custom apps |
| Access & price | Paid ChatGPT plans with Developer mode |
| Where it lives | chatgpt.com (add on web first) |
| Route to HighLevel | Header bridge or Connector catalog |
| Always on | No |
| Approval controls | Review each write action before confirming |
| Scheduling | No |
| Runs on | OpenAI cloud |
| Official GHL MCP tools | Via bridge |

## How ChatGPT (developer mode) connects to HighLevel
- **Header bridge:** Uses a small proxy you host that adds HighLevel's auth headers, because the app only accepts a URL.
- **Connector catalog:** Reaches HighLevel through a Zapier or Composio connector you sign into with OAuth. No HighLevel token is pasted anywhere.

## Set up ChatGPT (developer mode) with HighLevel in 3 steps
1. Turn on Developer mode (Settings → Security, or Apps & Connectors → Advanced).
2. Create an MCP app and paste your bridge URL.
3. Enable the app from the + menu in a new chat.

Header bridge (Cloudflare Worker):

```
// Cloudflare Worker that adds HighLevel's headers for URL-only connectors
// wrangler secret put GHL_PIT / GHL_LOC / BRIDGE_KEY
export default {
  async fetch(req, env) {
    const url = new URL(req.url);
    if (url.searchParams.get("k") !== env.BRIDGE_KEY)
      return new Response("Forbidden", { status: 403 });
    const h = new Headers(req.headers);
    h.set("Authorization", "Bearer " + env.GHL_PIT);
    h.set("locationId", env.GHL_LOC);
    h.delete("host");
    return fetch("https://services.leadconnectorhq.com/mcp/", { method: req.method, headers: h, body: req.body });
  }
};
// Connector URL: https://ghl-bridge.<you>.workers.dev/?k=<BRIDGE_KEY>
```

## Best HighLevel jobs for ChatGPT (developer mode)
- Quick contact lookups and updates
- Summarizing conversations before a call
- Drafting campaign copy from CRM segments

## Use ChatGPT (developer mode) as your HighLevel business dashboard
Use ChatGPT for on-demand analysis of HighLevel data alongside other connected apps; schedule recurring reports with ChatGPT Dots instead.

## Connect HighLevel to your other business apps with ChatGPT (developer mode)
Business app reach: ChatGPT apps + custom MCP apps

| App category | How ChatGPT (developer mode) reaches it |
| --- | --- |
| Apps directory | OpenAI-built and partner apps |
| Custom tools | Developer-mode MCP apps for your own servers |
| Catalog bridges | Through Zapier or Composio |


## Permissions to grant
- contacts.readonly
- conversations.readonly

## Limits and watch-outs
- Local MCP servers aren't supported.
- OpenAI has moved the Developer mode toggle several times in 2026.
- Paid plans only.

## FAQ
### Why does ChatGPT need a bridge for HighLevel?
ChatGPT custom apps connect by URL and usually OAuth. HighLevel's MCP server expects a bearer token header, so a tiny proxy adds it.

### Is ChatGPT the same as ChatGPT Dots?
No. Dots are always-on agents inside ChatGPT that run scheduled work; developer-mode apps are for chat sessions.

### Can ChatGPT (developer mode) connect HighLevel to Gmail, Slack, QuickBooks and my other apps?
Yes, within its reach: ChatGPT apps + custom MCP apps. Apps directory: OpenAI-built and partner apps. Custom tools: Developer-mode MCP apps for your own servers. Catalog bridges: Through Zapier or Composio.

### Can ChatGPT (developer mode) power a HighLevel business dashboard?
Use ChatGPT for on-demand analysis of HighLevel data alongside other connected apps; schedule recurring reports with ChatGPT Dots instead.

## Sources
- [ChatGPT custom connectors (Skills Playground)](https://skillsplayground.com/integrations/chatgpt/)
- [How to Setup and Use the HighLevel MCP Server](https://help.gohighlevel.com/support/solutions/articles/155000005741)
- [HighLevel MCP developer docs](https://marketplace.gohighlevel.com/docs/other/mcp)