LicenseShrinker AI

• 

  SNS email report

• 

  lambda output

• 

  logo

Inspiration

Every organization pays for licenses like Slack, Zoom, or Microsoft Teams — even when many users don't use them regularly. We saw SaaS license waste as a real problem that costs startups and enterprises thousands of dollars every year.

We wanted to create a simple, serverless, AI-driven automation that tracks usage and sends alerts when licenses go unused — saving time and money.

What it does

Slack API is called by a Lambda function to fetch active users

DynamoDB tracks usage trends over time

Another Lambda function scans for inactive users (no activity for 4 weeks)

If users are inactive:

Sends a report via SNS email

Sends a Slack DM to the user asking if the license is still needed

Calculates estimated savings (e.g., 10 inactive × $8 = $80/month)

How we built it

We built LicenseShrinker AI, a serverless AWS Lambda system that:

⏱️ Automatically checks Slack user activity every 4 weeks

📊 Stores license usage history in DynamoDB

✉️ Sends smart reports via Amazon SNS (email)

🤖 Messages inactive users on Slack asking, “Do you still need this license?”

💰 Calculates estimated monthly savings

All built without any manual dashboard — just plug, deploy, and save!

Challenges we ran into

Setting up permissions for EventBridge Scheduler and Lambda Roles

Making Slack DM messages work via bot tokens

Handling first-run cases (empty database initially)

Setting up SES/SNS correctly to email reports

Accomplishments that we're proud of

✅ Fully automated a Slack license cleanup system using serverless AWS tools

🧠 Built a system that calculates real business savings (not just logs data)

🤖 Enabled direct user communication with a Slack bot that messages inactive users

💌 Delivered smart email reports without building a dashboard

🚀 Did it all with no manual inputs — 100% automated, smart, and scalable!

What we learned

How to integrate Slack API with AWS Lambda

IAM roles and permissions for DynamoDB and SNS

Using EventBridge Scheduler to trigger automation

Structuring a clean, serverless architecture for business use cases

What's next for LicenseShrinker AI

💡 Make it multi-SaaS: Add Zoom, Google Workspace, and Microsoft Teams integrations

📊 Add a Web Dashboard: So admins can review reports interactively

🔐 Use Secrets Manager instead of hardcoded tokens for better security

📦 Launch it as a plug-and-play tool for startups and enterprises

🧠 Add ML-based predictions: Auto-recommend who might become inactive soon

Built With

• api
• dynamodb
• eventbridge
• lambda
• python
• sns