Ecom Price Tracker Agent: Scheduled eBay Product Monitoring → AI Price Analysis → Slack Alerts

Problem:

An ecommerce business needed to monitor competitor or resale pricing on eBay across multiple products on a recurring schedule, manually checking product pages, comparing current prices to historical data, and alerting the team to significant price movements was too slow to support timely purchasing or repricing decisions.

Solution:

Built a scheduled n8n price monitoring workflow that simultaneously fetches two eBay product pages via HTTP, extracts title and price from each page's HTML content, merges the product data, runs conditional checks to determine if prices have changed since last check, logs current prices with a timestamp to a Google Sheets price tracker, then routes through two parallel AI Agent paths, AI Agent 1 (OpenAI + last price retrieval from sheet) analyzes Product 1 price movement and posts a Slack alert if the threshold condition is met; AI Agent 2 (OpenAI + last price retrieval) analyzes Product 2 independently with its own Slack notification path, both agents apply wait steps before posting to prevent notification flooding.

Result:

Delivered a fully automated ecommerce price intelligence system that monitors two eBay products on schedule, logs every price point to a historical tracker, and sends AI-analyzed Slack alerts when meaningful price changes occur, giving the team real-time pricing awareness without manual platform monitoring.