How to Build an Automated Inventory System with Low-Code

Managing inventory can become an overwhelming task for businesses, especially when it involves manually checking stock levels, sending reorder emails, and keeping track of supplier information. Thankfully, advancements in low-code tools and AI-based systems have made it possible to automate these repetitive tasks, freeing up valuable time for more strategic endeavors. In this article, we’ll explore how to build an automated inventory management system using low-code technology, step by step, based on a workflow outlined in the source content.

Whether you're a small business owner, an automation enthusiast, or a professional seeking to optimize workflows, this guide will empower you to create a system that simplifies and streamlines inventory-related processes.

What You’ll Learn

By the end of this guide, you’ll understand:

How to set up a workflow that monitors stock levels in real-time.
The steps to automate email communication with suppliers when restocks are needed.
How to incorporate approval mechanisms to ensure control over automated processes.
The role of low-code tools in building scalable and flexible systems.

Step 1: Define the Objective

The goal of this system is to create a workflow that:

Monitors stock levels in a database.
Identifies items that need to be restocked based on predefined reorder thresholds.
Alerts the store owner and requests approval before proceeding with supplier communication.
Automates email communication with suppliers to place orders for restocking.

This workflow is designed to run automatically, saving you time and minimizing errors associated with manual inventory tasks.

Step 2: Setting Up the Workflow

2.1 Schedule the Workflow

The first step is to define a schedule that triggers the inventory check. Use a Schedule Trigger Node to ensure the workflow runs every five minutes (or another appropriate interval based on your needs). This trigger initiates the process by checking your inventory database for items with low stock levels.

2.2 Connect to Your Inventory Database

Use a Google Sheets Node or another database integration to access your inventory records. This database should include columns for:

Product Name
Stock Quantity
Reorder Threshold
Supplier Details

For instance, if the stock quantity for "Webcam 1080p Camera" falls below its reorder threshold, it will be flagged for action.

2.3 Filter for Low-Stock Items

Add an If Node to filter items that need to be restocked. This node compares the stock quantity against the reorder threshold and separates items into two categories: those needing restock and those that do not. Only items in the former category are passed to the next step.

Step 3: Aggregate Data for Efficiency

To avoid executing multiple email actions for each low-stock item, use an Aggregate Node to combine all flagged items into a single list. This consolidated data will later be used to generate a comprehensive summary for the store owner and the suppliers.

Step 4: Incorporate an Approval System

4.1 Notify the Store Owner

Add a Gmail Node configured to send a notification email to the store owner. This email includes:

A summary of items needing restock, formatted clearly.
Two action buttons: "Approve" and "Decline."

The workflow pauses here, awaiting the owner’s response. If "Approve" is selected, the workflow continues to the next step. If "Decline" is selected, the workflow terminates, leaving the restocking process to be handled manually.

4.2 Set Approval Logic

Include another If Node to determine the course of action based on the owner’s response. If approval is granted, the workflow proceeds to retrieve supplier contact information.

Step 5: Automate Supplier Communication

5.1 Retrieve Supplier Contacts

Using a Google Sheets Node (or equivalent database tool), access the supplier contact list. This includes:

Supplier names
Contact emails
Phone numbers
Relevant product details

5.2 Use AI for Email Drafting

Incorporate an AI Agent Node to craft professional emails to suppliers. Provide the AI agent with:

A list of products needing restock.
Supplier contact details.
A prompt detailing the expected structure and tone of the email (e.g., formal, concise, and clear).

The AI generates an HTML-formatted email that includes:

Product names and SKUs.
Current stock levels and reorder thresholds.
Restocking requests specific to each supplier.

5.3 Send Emails

Finally, use a Gmail Node to send the emails to the appropriate suppliers. Ensure that the AI selects the correct supplier email address for each product and includes the necessary details in the message body. Test the output to confirm accuracy and professionalism.

Step 6: Optimize Workflow Settings

To enhance the system:

Remove any default attributions from the Gmail tool to maintain brand consistency.
Test and refine the workflow to ensure all nodes function as expected.
Adjust scheduling and approval mechanisms to suit your operational needs.

Key Takeaways

Low-Code Tools Simplify Automation: Building complex workflows is achievable without deep coding expertise.
Streamline Inventory Management: Automating stock level monitoring and supplier communication minimizes manual tasks and reduces human error.
Approval Mechanisms Add Control: Including an approval step ensures that the system aligns with business oversight requirements.
AI Enhances Efficiency: Leveraging AI to generate supplier emails ensures professionalism and consistency.
Customization is Key: Tailor the workflow's intervals, email content, and approval settings to meet the specific needs of your business.

Conclusion

By implementing this automated inventory management system, businesses can achieve a seamless, efficient, and cost-effective process for handling stock levels and restocking tasks. The use of low-code tools combined with AI-driven functionality ensures that even non-technical users can benefit from automation without compromising on customization or control.

This system exemplifies how technology can be leveraged to tackle operational challenges, save time, and streamline workflows - all while maintaining a focus on business priorities. Start building your own automated processes today and unlock new levels of efficiency for your organization.

Source: "I Built an Inventory Management System in n8n | Step-by-step Tutorial" - Alex Safari, YouTube, Aug 12, 2025 - https://www.youtube.com/watch?v=d8K-h9PVmwg

Use: Embedded for reference. Brief quotes used for commentary/review.