Inventory Tracking API
Monitor product availability, stock levels, and restock events across retailers and marketplaces in real time.
How It Works
Track product pages
Monitor product URLs for availability status, stock counts, and restock indicators.
Detect changes
Identify when products go in/out of stock, when quantities change, and when new variants become available.
Trigger actions
Build automated alerts, purchasing workflows, and demand forecasting from stock data.
Quick Start
curl -X POST https://alterlab.io/api/v1/scrape \
-H "X-API-Key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"url": "https://retailer.com/product/limited-edition",
"extract": {
"product_name": "string",
"in_stock": "boolean",
"quantity_available": "number",
"variants_available": "string[]"
}
}'Need an API key? — no credit card required.
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Frequently Asked Questions
Responsible Use
AlterLab is designed for extracting publicly available data. Always review the terms of service for any website you access, respect robots.txt directives, and ensure your use case complies with applicable laws in your jurisdiction.
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Pricing
From $0.0002/request. No subscriptions. Balance never expires.
Your first scrape.
Sixty seconds.
$1 free credit — up to 5,000 scrapes. No credit card.
Just a POST request.
No credit card required · $1 free credit, up to 5,000 scrapes · Balance never expires