Product Catalog Change Monitor | Price & Stock

Website Change Monitor & Diff Tracker

ryanclinton/website-change-monitor

Monitor any website for content changes with automatic diff detection. Track pricing pages, competitor sites, ToS updates, and more. Compares snapshots, reports added/removed text, and supports CSS selector targeting for precise monitoring.

E-commerce Product Scraper & JSON-LD Extractor

egeusta/product-data-extractor

Extract product prices, availability, images, identifiers and variants from public product pages. Discover URLs from store sitemaps, filter by data completeness, and export JSON or CSV. Free-plan sample: up to 25 pages per run.

Seller Policy Change Monitor

seeb/seller-policy-change-monitor

Extract marketplace seller-policy changes, fees, deadlines, and merchant impact.

Amazon & Trendyol Product Price Scraper

egeusta/marketplace-price-buybox-tracker

Extract visible product prices, seller details, ratings and availability from public Amazon and Trendyol pages. Use structured snapshots for marketplace research. Blocked pages and missing fields can limit results.

Google Shopping Feed Price & Stock Checker

egeusta/feed-consistency-checker

Compare public Google Shopping XML, CSV or TSV feeds with live product pages. Find price and availability mismatches, broken links, redirects and duplicate IDs before updating Merchant Center or launching campaigns.

Monitor competitor pricing pages and detect changes in prices, plans, CTAs, trials, and discount messaging.

Greenhouse Job Change Monitor — New, Changed & Closed Posts

jaff-consulting/greenhouse-job-change-monitor

Monitor public Greenhouse job boards with persistent snapshots. Detect new, changed and reopened posts, and confirm missing jobs on separate successful runs. Includes source links and change fields.

Website Change Monitor & Structured Diff API

blaidlink/website-change-intelligence

Website change monitor for up to 20 authorized public pages per run. Preserve caller-isolated baselines and receive structured sentence additions, removals, hashes, and change ratios for schedules, APIs, and AI agents.

Watch any Shopify store and get one row per change: price up or down with percent, back in stock, sold out, new and removed products, variant level. Pay only for changes; scanning an unchanged catalog costs nothing. No login, no API key, no proxy.

WeChat Mini Program Catalog Monitor — Price & Stock Changes

scrupulous_buckler/wechat-mini-program-catalog-price-stock-monitor

Compare customer-provided WeChat Mini Program product snapshots and detect new or removed SKUs, price changes, restocks, stockouts, low stock, assortment shifts, and evidence-linked catalog changes. This is a snapshot analyzer, not a Mini Program scraper.