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Fast Party connects to ChatGPT as a custom MCP app. You add it once using the Fast Party MCP server URL, sign in with your Fast Party account, and then manage events directly from ChatGPT.
Custom MCP apps in ChatGPT require developer mode. The connection is per user — each person connects their own Fast Party account.

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Steps to connect

1

Open ChatGPT settings

Go to chatgpt.com and sign in. Click your profile name in the bottom-left corner of the sidebar, then select Settings.
ChatGPT sidebar — open profile menu and click Settings
2

Go to Apps

In the Settings modal, select Apps from the left menu.
ChatGPT Settings — Apps section in the sidebar
3

Create the Fast Party app

Under Enabled apps, find Advanced settings and click Create app.
App Preferences — click Create app under Advanced settings
In the New App dialog, enter:
  • Name: FastParty
  • Connection type: Server URL
  • URL: https://chat.fastparty.ai/mcp
  • Authentication: OAuth
Check I understand and want to continue, then click Create.
New App dialog with FastParty name, MCP URL, and OAuth authentication
4

Click Connect

Fast Party appears in your apps list. Open it and click Connect.
FastParty app details — click Connect
5

Sign in with Fast Party

An Add FastParty to ChatGPT window opens. Click Sign in with FastParty to authorise the connection.
Add FastParty to ChatGPT — click Sign in with FastParty
6

Log in to your Fast Party account

Sign in with your Fast Party account — using Google, Microsoft, phone number, or email. If you don’t have an account yet, you can sign up at app.fastparty.ai/signup.
Sign in to Fast Party with phone number or email
7

Verify your phone

If you sign in with a phone number, enter the 6-digit code sent to your phone, then click Continue.
Check your phone — enter the verification code
8

You're connected

Fast Party is now connected to ChatGPT. In Settings → Apps, you can see the connection details and manage permissions. Click Refresh if the connection status doesn’t update right away.
FastParty connected — app preferences and connection details
9

Use Fast Party in a chat

Start a new chat. Click the + icon in the message bar, select More, then choose FastParty. Fast Party appears in the composer and is ready to use.
Message bar — click + then More and select FastParty
With Fast Party selected, ask ChatGPT to manage your events — for example, “What events do I have coming up?” or “Create a dinner party for next Friday.”
FastParty selected in the ChatGPT message composer

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What permissions are requested?

When you connect Fast Party to ChatGPT, you’re giving ChatGPT the ability to:
  • Create and update your events
  • Add guests and send invitations
  • View RSVP statuses
  • Set up agendas, tasks, food preferences, and potlucks
  • Create and manage guest circles
Fast Party only accesses your data when you ask ChatGPT to do something. It doesn’t run in the background or make changes without your instruction.

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What you can do via ChatGPT

The same Fast Party capabilities available through Claude are available through ChatGPT:
  • Create and edit events
  • Invite guests and track RSVPs
  • Build and publish event schedules
  • Set up food & beverage preferences
  • Create and manage potluck sign-ups
  • Create and assign tasks
  • Manage registered events and approve registrants
  • Set up and manage Circles

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Example prompts

“Create a dinner party for next Friday at 7 PM at my place, for 12 guests.”
“Add a potluck to my birthday party — mains, sides, desserts, 3 slots each — and publish it.”
“Show me the RSVPs for my housewarming event.”
“Set up a conference agenda: registration at 9 AM, keynote at 10, lunch at 12:30, workshops at 2 PM.”
“Approve all pending registrations for my charity gala.”

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Disconnecting

To remove the connection, go to Settings → Apps, open Fast Party, and disconnect the app. Disconnecting removes ChatGPT’s access to your Fast Party account. Your Fast Party data is never affected — everything stays intact in Fast Party.