intermediate
9 min read
E-commerce

Build a Price Tracker

Create a full-featured price tracking application that monitors products across multiple stores.

1

Design the tracker

Plan your product database, scraping schedule, and alert system.

2

Set up scraping jobs

Create scheduled tasks to scrape product pages.

async function trackPrice(url: string, selector: string) {
  const result = await client.scrape({ url, extract: { price: selector } });
  return parseFloat(result.scraped_content.price.replace(/[^0-9.]/g, ''));
}
3

Store price history

Save each price check to track changes over time.

4

Build alert notifications

Send alerts when prices drop below target thresholds.

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