Shopify Product Change Tracker

Pricing

Rating

Developer

Actor stats

Categories

Share

Monitor any Shopify store and get a clean, machine-consumable feed of change-events — new products, removed products, price changes, and inventory (in/out of stock) flips. Built for scheduled runs + webhooks. Pay per result.

Price-tracking dashboards (Prisync and friends) show you a screen. They don't hand a developer the raw event feed. This actor emits one row per discrete change, in exactly the shape an automation needs:

• product_added / product_removed
• price_changed (with oldPrice, newPrice, priceDelta, pctChange, direction)
• came_in_stock / went_out_of_stock
• compare_at_changed (sale started/ended; nowOnSale)
• title_changed

How it works

• Reads the store's public /products.json endpoint (no login, no anti-bot) across all catalog pages.
• Compares the catalog to the previous scheduled run (state persists in a named Key-Value store between runs).
• Emits only the changes since last run. On the first run it stores a baseline silently (or, optionally, emits the whole catalog as first_seen).

Why it's different

• Event feed, not a dashboard. Every row is a single actionable change with before/after fields — ready for a webhook, Slack alert, reprice bot, or drop-watcher.
• Built on the proven Shopify /products.json scraper with a real diff layer on top.
• In/out-of-stock detection per variant — catch restocks and sellouts the moment they happen.

Input

Example input

{
"domains":["aquariumcoop.com","allbirds.com"],
"watch":["price","inventory","added"]
}

Output

{
"shop":"aquariumcoop.com",
"eventType":"price_changed",
"productTitle":"Easy Green All-In-One Fertilizer",
"variantTitle":"8 oz Pump Bottle",
"sku":"EG-8OZ",
"oldPrice":"14.99",
"newPrice":"12.99",
"priceDelta":-2,
"pctChange":-13.34,
"direction":"down",
"url":"https://aquariumcoop.com/products/easy-green",
"detectedAt":"2026-06-21T13:40:00.000Z"
}

{
"shop":"aquariumcoop.com",
"eventType":"came_in_stock",
"productTitle":"Fluval 307 Canister Filter",
"variantTitle":"Default",
"available":true,
"price":"189.99",
"url":"https://aquariumcoop.com/products/fluval-307",
"detectedAt":"2026-06-21T13:40:00.000Z"
}

Schedule + webhook

1. Schedule the actor (hourly/daily). The first run stores a baseline; from the second run on, every run emits the changes since the last.
2. Add an Apify webhook on run succeeded → your endpoint receives the new change-events. Filter by eventType.

Pricing

Pay per result — charged per change-event row. Steady-state monitoring of a stable catalog is cheap (no changes → no rows). Turn on emitFirstSnapshot only if you want the initial catalog billed as events.

Built by MoneyMachine. Public /products.json data only; respect each store's terms.