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How do I connect Scribble to ChatGPT?

Scribble is in the ChatGPT app directory. Open the Scribble listing, press Install plugin, sign in to Scribble when the window opens, and choose what it may do. If your plan or workspace does not show the directory, you can still add Scribble by hand as a developer-mode connector pointing at https://scribblecards.com/api/mcp.

On this page

#Install the Scribble app

Scribble has been in the ChatGPT app directory since 27 August 2026, listed under Business & Operations by Luke Emery. Installing from there is the whole setup — there is no URL to paste and no developer setting to find.

  1. Open the Scribble listing

    Go to the Scribble app in the ChatGPT directory. You can also search the directory inside ChatGPT for Scribble.

    The listing
    https://chatgpt.com/plugins/plugin_asdk_app_6a7e6d2b2834819187023eba680e405f?q=scribble

  2. Press Install plugin

    The button reads Install plugin. ChatGPT will tell you the app is provided by Scribble and connects to scribblecards.com.

  3. Sign in and choose permissions

    A Scribble sign-in window opens. Sign in the way you normally do — ChatGPT never sees your password. Then untick anything you do not want the assistant to do and confirm. Leaving the send permission off is a perfectly sensible way to start.

    You’ll know it worked when Scribble appears in your apps list with its tools.

  4. Use it in a chat

    Start a new chat and ask for your credit balance. That is a read-only tool, so it proves the connection without spending anything.

#Approving an action

ChatGPT shows you the exact tool call before running anything that writes. On a send, that means you see the recipient, the address and the full message text before a card exists. Read it — that panel is the last point at which the card is still an idea.

#If you cannot see the app directory

Some workspaces have apps switched off, and some plans do not show the directory at all. In that case you can add Scribble by hand as a developer-mode connector. It is the same server and the same permissions — only the way you add it is different.

  1. Turn on developer mode

    Go to Settings → Connectors → Advanced and enable Developer mode. This is what lets you add a connector by URL.

  2. Create the connector

    Back in Connectors, choose Create. Name it Scribble, describe it as real handwritten cards, and use this MCP server URL:

    Text
    https://scribblecards.com/api/mcp

  3. Choose OAuth authentication

    Select OAuth rather than no authentication or an API key. There is nothing else to fill in — ChatGPT discovers the rest from the server.

  4. Sign in and choose permissions

    Complete the Scribble sign-in, untick anything you do not want, and confirm.

    You’ll know it worked when Scribble appears in the connector list with its tools.

  5. Turn it on in a chat

    Start a new chat and enable Scribble from the tools menu, then ask it for your credit balance to check the connection. Unlike a directory app, a developer-mode connector has to be switched on per conversation.

#Your first card

Connecting does not cost anything, and there is nothing to set up first — your Scribble account is created as you connect. Sending a card costs one credit, and a new account has none.

  1. Add credits

    Go to scribblecards.com/connect and buy 1, 5 or 20 credits. One credit sends one card. Credits do not expire.

  2. Confirm your address

    After the payment we show you the address from your payment card and ask you to check it. We write it on the corner of the envelope. A card with nothing in the corner is destroyed if it cannot be delivered.

  3. Ask for the card

    Back in the chat, give a name, a full US address and your message. Your assistant shows you the card first and sends nothing until you say yes.

    Text
    Use Scribble to send a card to Jane Doe, 12 Oak Street, Austin, TX 78701.
Write: thank you for lunch on Friday.

    You’ll know it worked when You see the card, in the real handwriting, before anything is posted.

#If it will not connect

What you seeWhat it means
No Install plugin button on the listingYou are signed out of ChatGPT, or your plan does not include apps. Sign in, then check the plan list at the top of this page.
This MCP server does not implement our specificationYou are on the developer-mode route and the URL has a typo. It must be exactly https://scribblecards.com/api/mcp.
Authentication loops back to the sign-in screenYour browser is blocking third-party cookies for scribblecards.com, or you canceled the permission screen. Try again and approve at least one permission.
The sign-in window opens and closes without connectingApprove at least one permission on the Scribble screen — a connection with nothing granted is not a connection. You do not need an account first: if this is your first time, we create one for you as you connect.
Connector unavailable in a chatDeveloper-mode connectors have to be enabled per conversation. Turn Scribble on in the tools menu.
Installed, but the tools do nothingOpen a new conversation. ChatGPT picks up an app's tools when a chat starts.

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