GTIN/Barcode Resolver

Choose this endpoint when you need to resolve a barcode (GTIN, EAN, UPC) to core product metadata — name, brand, category, packaging, quantity, images — and you want check-digit validation done before any remote lookup so typos are caught immediately. Prefer it over raw Open Food Facts API calls when you want a single unified call across multiple databases with normalization. It complements the sibling endpoints on the same host for deeper data like ingredients, allergens, or nutritional values.

• Invalid check digit — barcode is detected as a typo before any remote query is made; returns a validation error rather than 'not found'
• Product not found in either Open Food Facts or the general product database — returns a not-found response
• Malformed or non-numeric barcode input — returns a validation error
• Network or upstream database unavailability — may return a service error
• Incomplete product record — some fields (e.g. images, packaging) may be null if the database entry lacks them