Price Monitoring API
Track competitor prices, detect pricing changes, and build dynamic repricing systems with structured data extraction from any e-commerce site.
How It Works
Target product URLs
Send product page URLs to the API — supports any e-commerce platform with JavaScript rendering.
Extract pricing data
Receive structured price, availability, and product metadata in your response.
Monitor changes
Schedule recurring requests to detect price drops, stock changes, and new listings.
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://example-store.com/product/123",
"extract": {
"price": "number",
"currency": "string",
"availability": "string",
"title": "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