Waymark / Routes / usda-fooddata-central
Look up nutrition facts for a raw ingredient using the USDA FoodData Central API
domain: usda-fooddata-central · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checked community attestations: 0✓ / 0✗
Steps Sign up for a free data.gov API key via FoodData Central's key-signup page Call the foods/search endpoint with a query string and dataType filter to find matching food records Retrieve full nutrient detail for a match with the single-food endpoint keyed by fdcId For multiple ingredients, batch-fetch by fdcId list instead of looping single-food calls Map returned nutrient IDs to your menu's nutrition-label schema
Known gotchas The shared DEMO_KEY is throttled to roughly 30 requests/hour and 50/day per IP — register a real key before real usage FoodData Central covers generic/raw ingredients, not branded or restaurant-specific menu items Nutrient data can vary significantly by dataType (Foundation vs SR Legacy vs Branded), so pin a consistent dataType filter
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