Generate 7-Day Event Plans with Google Calendar, GPT-3.5 and Notion

Description

Generate 7-Day Event Plans with Google Calendar, GPT-3.5 and Notion 🎉
Automate Your Event Planning: From Calendar Entry to Done-For-You Checklist

Stop scrambling before birthdays, anniversaries, or family gatherings. This workflow turns a simple Google Calendar event into a 7-day prep plan — complete with shopping lists, tasks, and reminders — all auto-sent to Notion and your inbox.

Perfect for:
👩‍👧 Homemakers hosting family events
💼 Solopreneurs planning launches or webinars
🎉 Anyone who wants to celebrate without the stress

The workflow:
📅 Detects a new event in Google Calendar (e.g., “Emma’s Birthday”)
🤖 Uses GPT-3.5 to generate a 7-day prep plan (buy cake, send invites, decorate)
📝 Creates a Notion page for the event, then loops through each AI-generated task to add them as individual rows/items with due dates
📨 Emails you a summary + link to the Notion page

No spreadsheets. No mental load. Just set the date — and let AI handle the rest.

> 🔁 Key Detail: After the Notion page is created, the workflow uses an Item Lists node to split the AI-generated task array into individual items. Each task is then processed in a loop and appended to the Notion database as a separate row — ensuring clean, actionable checklists.

Prerequisites

Before using this workflow, ensure you have:

| Service | Purpose | Free Tier? |
|--------|--------|-----------|
| n8n | Orchestrate automation | Yes |
| Google Calendar | Trigger on new events | Yes |
| Notion | Store prep checklist | Yes |
| OpenAI | AI planning logic (GPT-3.5) | Yes (limited free tier) |
| SMTP Email | Send confirmation email | Yes (via Gmail or similar) |

🔐 Store all API keys securely in n8n’s Credentials section.

Google Calendar Setup

Your event must include:
Title**: e.g., "Emma’s Birthday"
Date**: The event date
Description** (optional): e.g., “Theme: Unicorn, Guests: 10”

💡 Tip: Use a specific keyword in the title (e.g., “🎂”) to trigger only special events.

Notion Database Requirements

Create a Notion database with these columns:

| Column Name | Type | Example |
|------------|------|--------|
| Name | Title | "Emma’s Birthday Prep" |
| Task | Text | "Buy cake" |
| Due Date | Date | 2025-09-10 |
| Status | Status | To Do, In Progress, Done |
| Event Date | Date | 2025-09-12 |
| Notes | Text | "Vanilla with rainbow sprinkles" |

📌 Share your Notion workspace with your n8n integration (via integration token).

Step-by-Step Setup Instructions

1. Import the Workflow
In n8n, go to Workflows > Create from JSON
Paste the provided JSON
Click Import

2. Set Up Credentials
Google Calendar**: Connect via OAuth
Notion**: Add your integration token
OpenAI**: Add your API key
Email**: Set up SMTP (e.g., Gmail app password)

🔐 Never hardcode keys — use n8n’s credential system.

3. Configure the AI Prompt
In the HubGPT: Generate Prep Plan node:
You're planning "{{ $json['summary'] }}" on {{ $json['start'] }}.
Generate a 7-day prep plan with 5–7 tasks (e.g., shopping, invites, setup).
Include:
3 days before: Send invites
2 days before: Buy supplies
1 day before: Decorate
Return as a JSON array with 'task' and 'dueDate'.