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Track daily price and stock changes on Shopify stores

An agent reads a Shopify store's public product feed daily and reports new, removed, price and stock changes, e.g. 692 products at allbirds.com.

Time saved
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Setup time
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Running cost
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Cost range
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Use case overview

An agent reads a Shopify store's public product feed daily and reports new, removed, price and stock changes, e.g. 692 products at allbirds.com.

Reported experience

  1. What they did

    The Store Price Tracker tool reads a Shopify store's public products.json feed, up to 250 products per page, and keeps a daily snapshot, because the feed has no price history. Each answer compares the latest snapshot with the previous day's: new and removed products, price changes and per-variant stock changes. It checks robots.txt first, identifies itself, and backs off on 429 responses.

  2. How it went

    Across three stores, allbirds.com showed 692 products, 0 price changes and 10 stock changes. gymshark.com had 10,027 products read, 6 new, 0 price changes and 266 stock changes. Kylie Cosmetics (247 products) was only just added.

  3. Worth knowing

    On very large catalogs the read stops at a page limit, so removed products can't be counted. The /cart.json Shopify check also returns 404 on custom storefronts such as gymshark.

Example prompts

Try with Claude Code
Write a small script that reads the public products feed of [store URL, e.g. store.com/products.json] each day and saves a snapshot. Compare each day to the previous one and report new products, removed products, price changes and stock changes in a short summary. Run it once now to create the first snapshot and show me the product count, then set it up to run daily at [time].
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