Skill: yinanping-cpu/yinan-price-monitor (version 1.0.0)

--- name: price-monitor description: Monitor website prices, inventory, and content changes using browser automation. Use when tracking e-commerce prices, competitor monitoring, stock alerts, or any web content change detection. Supports scheduled checks, price history logging, and alert notifications. --- # Price Monitor ## Overview Automated price and content monitoring skill using agent-browser. Tracks price changes, stock availability, and content updates on any website with configurable alerts and history logging. ## Quick Start ```bash # Monitor a product price agent-browser open "https://example.com/product/123" agent-browser snapshot -i agent-browser get text @e1 # Get price element ``` ## Core Workflows ### 1. Single Product Price Check **Use case:** Check current price of a specific product ```bash # Navigate to product page agent-browser open "<product-url>" # Get page snapshot to find price element agent-browser snapshot -i # Extract price (use appropriate ref from snapshot) agent-browser get text @e1 # Optional: Save to history log echo "$(date), $(price)" >> price-history.csv ``` ### 2. Multi-Product Monitoring **Use case:** Track prices across multiple products/competitors Create a `products.csv` with URLs and price selectors: ```csv url,selector,name https://site-a.com/product1,.price-tag,Product A https://site-b.com/item2,#price,Product B ``` Run monitoring script: ```bash python scripts/monitor_prices.py products.csv ``` ### 3. Stock/Inventory Alerts **Use case:** Get notified when out-of-stock items become available ```bash agent-browser open "<product-url>" agent-browser snapshot -i agent-browser get text @e1 # Check for "In Stock" or "Out of Stock" ``` ### 4. Price History Tracking **Use case:** Build historical price data for analysis Script automatically logs: - Timestamp - Product name/URL - Current price - Stock status Output: `price-history.csv` or JSON format ## Scripts ### monitor_prices.py Main monitoring script that: - Reads product list from CSV - Navigates to each URL - Extracts price using CSS selector - Logs results with timestamp - Detects price changes - Optional: Send alerts on significant changes **Usage:** ```bash python scripts/monitor_prices.py products.csv [--alert-threshold 10] ``` **Arguments:** - `products.csv` - Product list with URLs and selectors - `--alert-threshold` - Percentage change to trigger alert (default: 10%) ## Configuration ### Product List Format (CSV) ```csv url,selector,name,min_price,max_price https://amazon.com/dp/B08N5WRWNW,.a-price-whole,Sony Headphones,50,150 https://bestbuy.com/site/12345,.priceView-hero-price,TV,200,500 ``` ### Alert Options - **Email alerts** - Configure SMTP settings - **Discord webhook** - Post to Discord channel - **File logging** - Append to CSV/JSON - **Console output** - Print changes to terminal ## Best Practices 1. **Rate limiting** - Add delays between requests (30s+ recommended) 2. **Error handling** - Handle page load failures gracefully 3. **Selector stability** - Use stable CSS selectors, avoid dynamic classes 4. **Headless mode** - Run browser in headless mode for automation 5. **Schedule wisely** - Check prices during business hours for accuracy ## Example: Daily Price Check Cron ```bash # Run every day at 9 AM 0 9 * * * cd /path/to/skill && python scripts/monitor_prices.py products.csv ``` ## Troubleshooting - **Element not found**: Re-run snapshot to get updated refs - **Price format issues**: Adjust selector or parse with regex - **Page load timeout**: Increase timeout or add wait condition - **Blocked by site**: Add delays, rotate user agents, or use residential proxy


Security scan verdicts — ClawScan: clean | static analysis: clean | VirusTotal: clean | SkillSpector: suspicious (MEDIUM)