๐ Smart Vendor Contract Renewal & Reminder Workflow With GPT 4.1 mini
Watch the demo video below:

Never miss a vendor renewal again!
This smart workflow automatically tracks expiring contracts, reminds your finance team via Slack, and helps initiate renewal with vendors through email โ all with built-in approval and logging. Perfect for managing both auto-renew and manual contracts.
๐ Whoโs it for
This workflow is designed for Finance and Procurement teams responsible for managing vendor/service contracts. It ensures timely notifications for expiring contracts and automates the initiation of renewal conversations with vendors.
โ๏ธ How it works / What it does
-
โฐ Daily Trigger
- Runs every day at 6:00 AM using a scheduler.
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๐ Retrieve Contract List
- Reads vendor contract data from a Google Sheet (or any data source).
- Filters for contracts nearing their end date , using a Notice Period (days) field.
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๐ Branch Based on Renewal Type
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๐ (Optional) Logging
- Can be extended to log all actions (Slack messages, emails, approvals) to Google Sheets or other databases.
๐ ๏ธ How to set up
-
Prepare your Google Sheet
- Include the following fields:
Vendor Name, Vendor Email, Service Type, Contract Start Date, Contract End Date, Notice Period (days), Renewal Type, Finance Contact, Contact Email, Slack ID, Contract Value, Notes.
- Sample: https://docs.google.com/spreadsheets/d/1zdDgKyL0sY54By57Yz4dNokQC_oIbVxcCKeWJ6PADBM/edit?usp=sharing
-
Configure Integrations
- ๐ข Google Sheets API : To read contract data.
- ๐ต Slack API : To notify and wait for approval.
- ๐ง OpenAI API (GPT-4) : To generate personalized reminders.
- โ๏ธ Email (SMTP/Gmail) : To send emails to vendors.
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Set the Daily Scheduler
- Use a Cron node to trigger the workflow at
6:00 AM daily.
โ
Requirements
| Component | Required |
|---|
| Google Sheets API | โ
|
| Slack API | โ
|
| OpenAI API (GPT-4) | โ
|
| Email (SMTP/Gmail) | โ
|
| n8n (Self-hosted or Cloud) | โ
|
| Contract Sheet with proper schema | โ
|
๐งฉ How to customize the workflow
- Adjust Reminder Period : Modify the logic in the
Find Expiring Vendors node (based on Contract End Date and Notice Period).
- Change Message Tone or Format : Customize the OpenAI agent's prompt or switch from plain text to branded HTML email.
- Add Logging or Tracking : Add a node to append logs to a Google Sheet , Notion , or database.
- Replace Data Source : Swap out Google Sheets for Airtable , PostgreSQL , or other CRM/database systems.
- Adjust Wait/Approval Duration : Modify the
sendAndWait Slack node timeout (e.g., from 8 hours to 2 hours).
๐ฆ Optional Extensions
- ๐งพ Add PDF contract preview via Drive link
- ๐ง Use GPT to summarize renewal terms
- ๐ Auto-create Jira task for contract review