Government & Open Data APIs
Public datasets on food, health, safety, holidays and companies. 7 listed: 6 completely free, 2 usable without an API key.
USDA FoodData Central
Nutrient data for foods and branded products (public domain).
openFDA
Drug, device and food adverse events, labels and recalls.
api.data.gov
One key for many US federal agency APIs.
Nager.Date
Public holidays for 100+ countries.
Calendarific
Worldwide holidays including observances.
CPSC Recalls API
US consumer product recall data.
Companies House API
UK company profiles, officers and filing history.
Comparing government & open data APIs
| API | Auth | Pricing model | Docs |
|---|---|---|---|
| USDA FoodData Central | API key | Free | fdc.nal.usda.gov |
| openFDA | API key | Free | open.fda.gov |
| api.data.gov | API key | Free | api.data.gov |
| Nager.Date | No key | Free | date.nager.at |
| Calendarific | API key | Free tier | calendarific.com |
| CPSC Recalls API | No key | Free | cpsc.gov |
| Companies House API | API key | Free | developer.company-information.service.gov.uk |
Not sure which to pick? Read our 12-point API checklist and guide to API pricing models.