Every API, one clean contract.

Barcode → one merged product: title/brand/category/image/description + dimensions/model + retailer offers&prices (UPCitemdb) + nutrition/ingredients/allergens if food (OFF). Includes check-digit validation, GTIN-13 normalization and issuing-country. source=auto merges both.

{
  "barcode": "5449000000996"
}

Up to 20 barcodes in one call → array of merged products (input order preserved), each with its own source/validation. The competitor caps at 10.

{
  "barcodes": "5449000000996,0885909950805"
}

Free-text product-name search across the open databases → product cards with pagination. Optional category scope. (Competitor: keyword/title/category search.)

{
  "query": "nutella"
}

All products for a brand/manufacturer → product cards with pagination. (Competitor: brand + manufacturer search.)

{
  "brand": "coca-cola"
}

GS1 company-prefix (partial-barcode) search → products whose barcode starts with the given 6+ digits, plus the decoded issuing country. (Competitor: `491234*` partial method.)

{
  "prefix": "5449000"
}

Manufacturer-Part-Number / model lookup → products with that MPN/model (UPCitemdb keyword index over the MPN). Exact model/mpn matches are surfaced first. Closes the competitor's mpn query-method (the proprietary mpn= DB-index isn't on the open tier, but the keyword index resolves real MPNs — Logitech 910-005565, Sony WH-1000XM4, Canon 2727C002 all verified).

{
  "mpn": "910-005565"
}

Validate + decode a barcode WITHOUT a network call: mod-10 check digit, GTIN type, GTIN-13 normalization, GS1 issuing country, ISBN/Bookland detection. (We EXCEED the competitor here — it has no standalone validate.)

{
  "barcode": "5449000000996"
}