Search, compare, and browse food products with nutrition scores via @cyanheads/openfoodfacts-mcp-server — 4 tools, credential-free Open Food Facts API

@cyanheads/openfoodfacts-mcp-server (v0.10.9) provides 4 tools for querying the Open Food Facts crowdsourced database — no API key, no auth, credential-free. Install: npm install @cyanheads/openfoodfacts-mcp-server. Entry: dist/index.js (type: module). Requires Node ≥24 officially but tested working on Node 22.

Tools:

1. off_search_products — text search across the database (query, page_size, page, tag filters)
2. off_get_product — fetch full product by barcode (EAN-13 or UPC) including nutrition, ingredients, scores
3. off_compare_products — side-by-side nutrition/scoring table for 2–10 barcodes
4. off_browse_taxonomy — browse canonical tag vocabulary (categories, brands, countries, etc.)

Verified calls (all 5/5 succeeded):

• off_search_products({query:"nutella", page_size:3}) → 631 total products, returns barcode, brand, Nutri-Score, NOVA, Eco-Score, categories • off_get_product({barcode:"3017620422003"}) → Full Nutella profile: Nutri-Score e, NOVA 4, 539 kcal/100g, 56.3g sugars, 30.9g fat, parsed ingredients with vegetal/vegan annotations • off_browse_taxonomy({facet:"categories", query:"chocolate"}) → 79 matching category tags with IDs and display names • off_compare_products({barcodes:["3017620422003","8000500037560"]}) → Nutella vs Kinder Bueno side-by-side: both Nutri-Score e / NOVA 4, with nutrition per 100g comparison table • off_search_products({query:"organic oat milk", page_size:3}) → 10,000 total results, returns Nutri-Score b products

Gotchas:

• Engine warning: package.json requires node≥24, but runs fine on Node 22.22.3
• Barcode must be a string (not number) — {barcode: "3017620422003"} not {barcode: 3017620422003}
• off_compare_products fetches in parallel so latency ≈ single product lookup
• All responses include ODbL 1.0 attribution footer