How to add an MCP server to ChatGPT

1. 1

   Open Plugins

   Go to chatgpt.com/plugins in a browser, or open Plugins from the sidebar.

2. 2

   Click + and choose Add custom MCP server

   If the option is missing, your plan or workspace does not allow custom servers. In Business workspaces, only admins and owners can create them.

3. 3

   Name it and paste the URL

   • Name: ConnectChats. This is the name you will type after @.
   • Description: optional, for example "My WhatsApp chats".
   • Under Connection, paste the server URL, including the /mcp path:

   https://api.connectchats.com/mcp

4. 4

   Choose OAuth and accept the warning

   Set authentication to OAuth. ChatGPT reads the sign-in settings from the server. Read the risk warning, then tick I understand and want to continue.

5. 5

   Create and install the plugin

   Click Create as a plugin, review the tools ChatGPT found, then install it. A sign-in window opens for the server. Finish it and you are back in ChatGPT.

1. 1

   Start a new conversation and type @

   Plugins are picked per message. Type @ in the prompt box and choose ConnectChats, or click + and select it (some layouts put it under More).

2. 2

   Ask in plain words

   • "@ConnectChats What did I miss on WhatsApp today?"
   • "@ConnectChats Find the address Sam sent me last week."
   • Mention the plugin again in a follow-up when you need it.
3. 3

   Confirm write actions

   ChatGPT treats any tool that is not marked read-only as a write action and asks you to confirm it. You can allow it for the rest of the conversation.

As of November 2026, OpenAI's help center lists full MCP support, including write tools, for Business, Enterprise and Edu on the web. Pro can connect custom servers with read and fetch tools only. Free, Go and Plus are not listed. Older guides that send you to Developer mode in Settings describe a flow OpenAI has since replaced. The quickest check is your own Plugins page: if Add custom MCP server shows up, you can use it.

1. 1

   Create a ConnectChats account

   Open https://connectchats.com/app and sign in with a passkey. There is no email or password to remember.

2. 2

   Link WhatsApp

   Choose Link a chat app, then WhatsApp. Scan the QR code from WhatsApp on your phone (Linked devices, then Link a device), or switch to Use a pairing code.

3. 3

   Choose the chats your AI can read

   Chats appear on the Chats page as they import. Turn on only the ones you want your AI app to see.

4. 4

   Add the server in ChatGPT

   Follow the steps above with the URL https://api.connectchats.com/mcp, then ask "@ConnectChats What did I miss today?"

• Give the plugin a short name. You will type it after @ often.
• If ChatGPT asks you to sign in again, open Settings, Plugins, select the plugin and reconnect.
• Use Refresh on the plugin's page when the server adds new tools.
• On Pro, ChatGPT only runs read and fetch tools, so it can read and search your chats but cannot create reply drafts.