Marketplace Listings API
Collect product listings, seller profiles, pricing history, and availability data from public online marketplace pages to build inventory intelligence, arbitrage detection, and competitive pricing tools.
How It Works
Target category or search pages
Request marketplace search results or category pages to discover listings at scale.
Extract listing details
Pull product title, price, seller, condition, shipping options, and listing age from each result.
Monitor and analyze
Track price changes, new listings, and sold items to build market pricing models.
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://marketplace.example.com/search?q=vintage+camera",
"extract": {
"listings": [{
"title": "string",
"price": "number",
"seller_rating": "number",
"condition": "string",
"bids": "number"
}]
}
}'Need an API key? Sign up free — no credit card required.
Related Data Extraction Guides
Related Use Cases
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.
Your first scrape.
Sixty seconds.
$1 free balance. No credit card. No SDK.
Just a POST request.
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