Every API, one clean contract.

store domain → platform verdict + store metadata + tech-stack + catalog sample (price/discount/stock signals) + reputation (mode-scaled depth)

{
  "store": "definitely not a domain"
}

store domain → ecommerce platform verdict (shopify|woocommerce|magento|bigcommerce|prestashop|custom_or_unknown) from the store's own public JSON capability test + technographic fingerprint — fast, no catalog fetch

{
  "store": "allbirds.com"
}

look up to 5 stores in one call (basic mode, cache-first, per-store ok/error)

{
  "stores": [
    "d0.example",
    "d1.example",
    "d2.example",
    "d3.example",
    "d4.example",
    "d5.example"
  ]
}