Connect ChatGPT

About 10 minutes, one time. Requires a paid ChatGPT plan (Plus, Pro, Business, or Enterprise) with Developer Mode — a one-time toggle, steps below. On Business/Enterprise an admin must allow custom connectors first.

Part 1 — Enable Developer Mode (one time)

Go to chatgpt.com → click your profile → Settings → Apps & Connectors.

Scroll to Advanced settings → toggle Developer mode on.

Part 2 — Add Rentalope

In Apps & Connectors, click Create → New connector.

Name: Rentalope · Description: Run your rental business by talking · MCP server URL: https://mcp.rentalope.com copy

Authentication: OAuth — leave Client ID and Client Secret blank. ChatGPT registers itself with Rentalope automatically; there are no keys to create or paste.

Acknowledge the notice and create. ChatGPT redirects to the Rentalope sign-in page — log in, review the approval screen, and click Approve.

Part 3 — Use it in a chat

In any chat, click + (attach) → More → enable Rentalope.

Talk normally. ChatGPT asks you to confirm each action by default — and Rentalope's own safeguards apply on top: rentals always preview first, money actions always require your explicit confirmation.

First things to say

"What's in my Rentalope account?"

"I bought a GE washer/dryer set today for $270, needs a new belt, it's in the trailer."

"Who owes me money?"

Troubleshooting

No Developer Mode toggle — you're on a free plan, or (Business/Enterprise) your admin hasn't allowed custom connectors yet.
"This tool cannot be called" — open the connector in Apps & Connectors and refresh its tool list, then start a new chat. A known quirk of ChatGPT's connector support.
Where do I manage it? — connectors are created and managed on the web at chatgpt.com; mobile picks them up from there.

ChatGPT's custom-connector support is newer than Claude's; if you hit friction, the Claude path is the smoothest today.