Price Monitoring

Q: Which marketplaces are covered?

OpenWeb Ninja covers Amazon, Walmart, eBay, Costco, Wayfair, and Home Depot with dedicated real-time APIs, plus Real-Time Product Search, which aggregates products and offers from across major sources via Google Shopping.

Q: How can I track the price of a specific product over time?

The Real-Time Product Search API returns price history from Google Shopping for a product, so you can see how its price has changed over time directly. You can also look up a product by its identifier on the marketplace APIs and pull current offers and pricing on a schedule, which lets you build your own price-history tracking, repricing, and buy-box monitoring.

Q: How can I compare the same product across marketplaces?

By querying the same product across the Amazon, Walmart, and other marketplace APIs, or by using Real-Time Product Search, you can compare prices and offers across retailers for comparison-shopping use cases.

Q: Is there a free tier?

Yes. You can start tracking prices on a free tier and scale to high-volume monitoring with simple REST endpoints.

Track prices, offers, and stock across Amazon, Walmart, eBay, Costco, Wayfair, Home Depot, and Google Shopping. Power price comparison and competitor monitoring in real time.

Overview

Price and product monitoring means tracking how listings, prices, offers, and availability change across online stores over time. OpenWeb Ninja's e-commerce APIs return live product data from Amazon, Walmart, eBay, Costco, Wayfair, Home Depot, and aggregated Google Shopping results, including offers, buy-box pricing, price history from Google Shopping, and reviews. Use them for price comparison, competitor monitoring, repricing, and catalog enrichment, with a free tier and simple REST endpoints.

APIs for Price Monitoring

Mix and match these APIs to build your solution. Every API includes a free tier.

Real-Time Amazon Data API

Fast and Reliable Product Searches, Reviews, Offers, Best Sellers, Deals, Seller Data, Influencers Data, and More on Amazon in Real-Time.

Data sources

Amazon

Web

Real-Time Product Search API

Fast and Reliable Product Searches, Extensive Product Data Including Offers & Prices, Rating & Reviews, Images, Variants, Historical Prices, and More in Real-Time from Google Shopping.

Data sources

Google Shopping

Real-Time Walmart Data API

Fast, Reliable, and Extensive Walmart Data API - Search and Get Products, Reviews, Offers, Product Details, and More from Walmart US and Canada in Real-Time.

Data sources

Walmart

Real-Time eBay Data API

Fast, Reliable, and Extensive eBay Data API - Search Products, List Products by Category, Get Seller Feedback / Product Reviews, and More from 20 eBay Domains Worldwide in Real-Time.

Data sources

eBay

Real-Time Costco Data API

Fast, Reliable, Product Searches and Comprehensive Product Data on Costco US and Canada in Real-Time.

Data sources

Costco

Real-Time Wayfair Data API

Fast, Reliable, and Extensive Wayfair Data API - Search Products, Get Product Details with Pricing and Stock, Paginated Reviews with AI Summaries, and More from 5 Wayfair Domains in Real-Time.

Data sources

Wayfair

Real-Time Home Depot Data API

Fast and Reliable Product Searches, Product List by Category, Extensive Products Details, Product Reviews, and More on Home Depot in Real-Time.

Data sources

Home Depot

Real-Time Lens Data API

Search by Image on Google Lens in Real-Time, Get Visual Matches, OCR, Knowledge Graph, Text, Products, QR Code Information and More, All in a Single API.

Data sources