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On Shelf

Sources

US grocers do not publish a shared live-price API. This is the map of what exists, what it costs to call, and what On Shelf actually uses.

  • This copy — market index

    On device

    Co-op, Superstore, No Frills, Walmart CA, Safeway, Save-On, FreshCo, Sobeys, Giant Tiger, Independent, Costco

    No outbound call unless you turn live lookup on.

    CAD or USD index depending on the country pack. Remix STORE_SPREAD per town.

  • Open Food Facts

    Open data, optional

    Name, brand, size — not Canadian shelf tags

    15 product reads/min/IP, 10 searches/min/IP. Search-as-you-type gets you banned.

    Off by default. One call per unknown search, only when you opt in.

  • Flipp / Reebee / Flyers

    Circulars

    Weekly ads for Loblaw, Sobeys, Walmart CA, Co-op

    No public price API. Partner access only.

    Best legal path for this-week sale prices in Canada.

  • Loblaw / PC Express

    Private app

    Superstore, No Frills, Independent

    No developer program for shelf prices.

    Do not scrape from a shared app. Keep calls off unless you are running your own copy.

  • Walmart.ca

    Storefront

    Canadian Walmart listings, not US Marketplace

    US Marketplace caps (~10/min ads, ~5,000/day on some io plans) do not apply here. Unofficial scrapers still 429 fast.

    A personal index beats a crawler for a ketchup bottle.

  • Kroger Products API

    US official

    Kroger banners only

    Partner OAuth. A few thousand calls/day when approved.

    Useless unless the country pack is United States.

  • Walmart US Marketplace

    Seller API

    Walmart.com listings for approved sellers

    ~10 ads lookups/min on many plans; item search is not a shopper price API.

    Personal copies should stay on the index. Live scrape 429s fast.

  • Target RedSky / store apps

    Unofficial

    Target grocery and Good & Gather

    No public grocery API. Unofficial JSON dies under load.

    Use the US stock index unless you hold a partner key.

  • Aldi / Publix / H-E-B / Food Lion

    Circular + app

    Weekly ads, not a SKU feed

    No developer price program.

    Same rule as Canadian banners: index first, flyer second.

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