PASAR API

🇺🇸 USDA ~ FoodData Central nutrition database

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Nutrient profiles for 400k+ foods; free data.gov key (DEMO_KEY works).

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# USDA ~ FoodData Central nutrition database needs an API key ~ get yours at:
# https://fdc.nal.usda.gov/api-guide.html
curl 'https://api.nal.usda.gov/fdc/v1/' \
  -H 'Authorization: Bearer YOUR_TOKEN'

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I'm integrating a United States API into my app.

API: USDA ~ FoodData Central nutrition database
Provider: U.S. Department of Agriculture (ARS)
Auth: requires an API key (sign up: https://fdc.nal.usda.gov/api-guide.html)
Pricing: free
Base URL: https://api.nal.usda.gov/fdc/v1/
Important note: Nutrient profiles for 400k+ foods; free data.gov key (DEMO_KEY works).

Source: U.S. Department of Agriculture (ARS) (https://fdc.nal.usda.gov/api-guide.html)
Source type: Official open-data catalogue
Endpoint type: Open-data catalogue JSON
Integration difficulty: Needs API key
Last checked: 2026-07-05
Production caveat: Keep credentials server-side and confirm current limits, pricing, and webhook/error behaviour in the provider docs.

Help me set up the correct onboarding/authentication path and make the first valid request ~ explain exactly where credentials go and what must happen before production.

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