How to leverage links to Wikidata (and Wikipedia)

• You may have spotted things like https://www.wikidata.org/wiki/Q40050 in API outputs, especially those related to Taxonomies
• Whenever possible, Open Food Facts entities are linked to Wikidata,and in turn to Wikipedia. What this means is that you get access to a trove of additional encyclopedic knowledge about food. You can for instance get: Wikipedia articles about Camembert, the translation of salt in many languages, the molecular structure of a cosmetic ingredient...
• We provide the Wikidata QID, which is an unambiguous, stable and reliable identifier for a concept that will be useful to actually retrieve info from Wikipedia and Wikidata.

Example

https://world.openfoodfacts.org/categories.json

{
  "linkeddata": { "wikidata:en": "Q40050" },
  "url": "https://world.openfoodfacts.net/category/beverages",
  "name": "Beverages",
  "id": "en:beverages",
  "products": 14196
}

Beverages → https://world.openfoodfacts.org/category/beverages → Q40050 → https://www.wikidata.org/wiki/Q40050 As you see, you'll get a beautiful image, information about the Quality label... As Wikidata is a Wiki, the knowledge you'll be able to retrieve will increase over time.

Retrieving info from Wikipedia and Wikidata

You can use the Wikipedia and Wikidata APIs to get the information you want:

• https://www.wikidata.org/wiki/Wikidata:Data_access

• https://en.wikipedia.org/w/api.php

Examples of things you can do

• Provide more context and more information about a specific Product, a Category of products, a Quality label, a Geography, a Brand, a Packaging material, an ingredient...

• Perform checks or computations by mixing Wikidata information and Open Food Facts information (and possibly other APIs)