Do I have to turn on developer mode in ChatGPT?

In Plus and Pro, no: the Create custom MCP server option shows up right in Add-ons, Add. In ChatGPT for business (Business, Enterprise, Edu), the admin turns it on in Workspace settings, Permissions and roles.

I don't see "Create custom MCP server", what do I do?

Check your plan: it doesn't exist in the free ChatGPT plan. If your ChatGPT is for business, ask the admin to turn on developer mode for your account.

ChatGPT says "An app with this name already exists".

You already created one with that name. Give it another one, for example "TBit Sales", or find it in Add-ons, Personal.

ChatGPT says "action discovery failed" or "Some configuration options were rejected".

It was an error on our server and we fixed it on October 5, 2026. If you created the add-on before, delete it in Settings, Add-ons, Delete app, and create it again.

It shows me agents that aren't mine.

You signed in to TBit with another account. Uninstall the add-on and connect it again with the email of your TBit account.

How much does it cost?

Nothing extra in TBit: the connection is included in your account. What you need from ChatGPT is a Plus, Pro or business plan.

Help center

How to connect ChatGPT to your TBit agent, step by step

Connect ChatGPT to your WhatsApp agent in TBit in two minutes: Add-ons, Create custom MCP server and your TBit account. With video and screenshots.

Published on October 6, 20265 min read

Ask ChatGPT about your TBit agent

When you connect ChatGPT to TBit, you ask the AI you already use about your agent: what it sells, how it handles conversations, how they're going and what questions it couldn't answer. You can also ask it to train it: it creates memories and suggests prompt improvements, which you approve in the app.

You set it up just once and it takes about two minutes. Here's the video and, below, each step with its screen.

Watch it in two minutes

Connect ChatGPT to your TBit agent

What you need

ChatGPT Plus or Pro, or a ChatGPT for business (Business, Enterprise, Edu). You can't add your own servers on the free plan.
Your TBit account: the email and password you use to sign in to the platform.
ChatGPT on the web (chatgpt.com) or in the desktop app. Once connected, you can also use it from your phone.

Do you have to turn on developer mode?

In Plus and Pro, no. OpenAI removed that step: the Create custom MCP server option shows up directly in Plugins and ChatGPT installs the plugin in developer mode on its own. We checked it on a Plus account on October 5, 2026.

If the option doesn't show up for you, check this:

Free plan: it doesn't exist. You need Plus or Pro.
ChatGPT for business: the admin turns on developer mode in Workspace settings, Permissions and roles. Ask whoever manages ChatGPT at your company.
If your account still shows a "Developer mode" toggle in Settings, Security and login, turn it on and go back to Plugins.

Step 1: create the plugin

1. Open Plugins. It's in ChatGPT's left menu.

ChatGPT menu with Plugins highlighted. — Plugins is in the left menu.

2. Tap Add. It's the black button, top right.

Plugins page with the Add button highlighted. — Add, top right.

3. Choose "Create custom MCP server". It's the third option in the menu.

Add menu with the Create custom MCP server option. — Create custom MCP server.

4. Fill in name and address. Name: whatever you want, for example "My TBit". Description: optional. Connection, Server URL: paste https://api.tbit.app/mcp.

Form with the name My TBit and the TBit server address. — Name, description and the server address.

5. Leave authentication on OAuth. It's already set that way. Don't touch the advanced settings.

Authentication field with OAuth selected. — Authentication stays on OAuth.

6. Check "I understand and want to continue". It's the notice ChatGPT shows for any server of your own.

I understand and want to continue checkbox highlighted. — Check the box.

7. Tap "Create as plugin". ChatGPT checks the server; it takes a few seconds.

Create as plugin button highlighted. — Create as plugin.

8. Tap "Continue to My TBit". It takes you to TBit so you can log in.

Connect My TBit window with the Continue button. — Continue takes you to TBit.

Step 2: log in with your TBit account

9. Log in to TBit. With your TBit email and password, or with Apple or Google if that's how you sign in.

TBit login screen with email and password. — Log in with your TBit account.

10. Tap Allow. You give ChatGPT permission to check your agents and suggest changes. You always approve changes to the prompt yourself.

TBit Authorize access screen with the Allow button. — Review the permissions and tap Allow.

11. Done: it shows up in Installed. You go back to Plugins and ChatGPT shows a green notice that it's connected.

Plugins with the new plugin in Installed and a green connection notice. — Your add-on is already installed.

Step 3: ask your agent

12. In a new chat, type @ and choose your add-on. That way ChatGPT knows it should use TBit.

The @ menu in the chat with My TBit highlighted. — Type @ and choose My TBit.

13. Type your question and send it. For example: "Give me a summary of my agent: what it does, how it responds, and what it knows."

Question typed in the chat and the Send button highlighted. — Ask anything you want about your agent.

14. ChatGPT answers with your agent's data. It reads the prompt, the memories, and the real conversations.

ChatGPT's answer with the summary of the Valentina agent. — The answer comes from your agent's real data.

Questions to try

Give me a summary of my agent.
How are my conversations going this week?
What questions could my agent not answer?
Add a memory: we're closed on Sundays.

Do you use Claude?

We also have the guide for Claude: Connect Claude to your TBit agent. And the page with all compatible clients is at tbit.app/es/mcp.