PlainDeck

MCP setup guide

Connect ChatGPT
to PlainDeck.

Keep creating in your conversation. Make room for review.

Start with a copy & paste

Let your assistant walk you through it.

Copy this prompt into a ChatGPT conversation. It checks for an existing connection or helps you set one up.

PlainDeck setup for ChatGPT

Help me set up PlainDeck in ChatGPT.
Check my connection, guide me through sign-in, and help me make my first cards.

View the full prompt
Help me set up PlainDeck in ChatGPT.

MCP server: https://plaindeck-api.attentionplease.build/mcp
Authentication: OAuth with automatic client registration.

If PlainDeck’s tools are already available in this conversation, check the connection with a read-only request. Otherwise, guide me through adding this server as a custom app in ChatGPT, one short step at a time. Wait while I sign in to my PlainDeck account and approve the connection myself. Don’t ask me to paste a password, API key, or access token into this chat, and don’t claim the connection is complete until a PlainDeck tool call succeeds.

Once connected, ask what I want to study. Draft a small set of question-and-answer flashcards from the material I provide and let me review them before saving.

The prompt guides you; adding the connection and approving sign-in still happen in your assistant’s settings.

MCP server URLhttps://plaindeck-api.attentionplease.build/mcp

Sign in with the same PlainDeck account you use in the app. The connection belongs to your account.

Step-by-step

A connection that follows your conversation.

Check access first.

Creating cards requires write tools. Custom app access and write permissions depend on your ChatGPT plan and workspace. If you can’t add an app, check the current OpenAI setup instructions or ask your workspace owner.

  1. Open custom app settings.

    On ChatGPT web, open Settings → Apps. Enable developer mode where your account or workspace allows it. Workspace administrators can also use Workspace settings → Apps → Create.

  2. Add PlainDeck.

    Create a custom app, name it PlainDeck, and enter the MCP server URL:

    https://plaindeck-api.attentionplease.build/mcp

    Choose OAuth authentication. PlainDeck supports automatic client registration; if the form permits it, leave client ID and client secret empty.

  3. Sign in and approve the connection.

    Scan the tools. When PlainDeck opens, sign in with your app account and review the permissions. Approve the connection, return to ChatGPT, and finish creating the app.

  4. Use PlainDeck in a chat.

    Start a conversation and select PlainDeck from the tools menu, or mention the app. Confirm that its card tools are available before asking it to save a deck.

Setup checked October 11, 2026 against OpenAI’s official guide. Menus and permissions can vary by workspace.

Make your first deck

Start with something you want to remember.

Attach your notes or paste a short passage into the conversation. Then try this prompt:

Create a deck called Biology Essentials with 12 short question-and-answer flashcards from these notes. Show me the cards before saving them to PlainDeck.

Review the proposed cards, then ask your assistant to save them. Open the same account in PlainDeck to find the new deck. The website preview uses sample cards; it does not create anything in your library.

If something gets in the way

A few things to check.

I can’t see the option to add a connection.

Custom app access depends on your ChatGPT plan and workspace permissions. Check developer mode and ask your workspace owner to enable access if needed. Use the official OpenAI instructions linked above for your account’s current options.

The sign-in or permission request expired.

Return to your assistant and start the connection again. Complete the PlainDeck sign-in and consent in the same flow. Opening the MCP URL directly is not the sign-in flow.

My cards aren’t showing in the app.

Check that your assistant reported a successful save, then refresh your library. Make sure the app and connection use the same PlainDeck account. A drafted answer in your conversation is not a saved card.

The assistant can’t use a card tool.

Enable PlainDeck for the current conversation. If the connection has expired, reconnect. In ChatGPT, an administrator may need to refresh and approve updated tools.

How do I disconnect?

Open the assistant’s connection settings and disconnect PlainDeck. If you need help revoking access, contact support. Deleting your PlainDeck account also revokes the assistant tokens it issued.

You’re ready to make it stick.

Open PlainDeck, find your deck, and flip your first card. Start a session when you’re ready to review.

Back to getting started