Price Monitor & Daily Excel Report Bot

Monitors product prices across e-commerce sites daily, detects price drops, and emails a formatted Excel report automatically every morning.

Overview

Automated price tracking system that monitors products across competitor websites, detects price drops, and delivers a formatted Excel report via email every morning at 8 AM. Saves 3+ hours of manual work per day.

What It Does

• Scrapes prices from target URLs using Selenium (handles JavaScript-rendered pages)
• Compares against previous day's prices automatically
• Highlights price drops >5% in red, increases in green inside Excel
• Emails formatted report to specified recipients on schedule
• Logs all runs with timestamps for auditing

Required Environment Variables

Set these in OpenClaw's Secrets manager before running:

Variable	Description	Example
SMTP_HOST	SMTP server hostname	smtp.gmail.com
SMTP_PORT	SMTP port number	587
SMTP_USER	Sender email address	[e-mail]
SMTP_PASS	Email password or app-specific password	xxxx xxxx xxxx xxxx
REPORT_RECIPIENT	Where to send the daily report	[e-mail]

Setup

1. Add target product URLs to config/urls.txt (one URL per line)
2. Set all environment variables above in OpenClaw Secrets
3. Set run schedule in OpenClaw: daily at 08:00
4. Chromium must be available on the host for Selenium headless mode

Usage

"Start monitoring prices for these URLs and email me a report every morning" "Check competitor prices and send Excel summary to [e-mail]" "Run price tracker now and show me today's drops" "Add this product URL to the monitoring list"

Output

• price_report_YYYY-MM-DD.xlsx — color-coded Excel report
• Email with report attached sent to configured recipient
• Console summary: total products, drops found, errors

Rules

• Never send more than 1 request per second to any domain
• Always save raw scraped data before processing (in data/raw/)
• If email delivery fails, save report to data/reports/ and retry once after 10 minutes
• If a URL returns 403/blocked, skip and log — do not retry more than 3 times
• Report must include: product name, URL, yesterday's price, today's price, % change

Example Config (urls.txt)

text

https://www.amazon.com/dp/B08N5WRWNW
https://www.amazon.com/dp/B09G9FPHY6
https://www.bestbuy.com/site/product/123456