Federal Register
FreeLiveLast verified 24 Sept 2026
Search and fetch daily US federal rules, proposed rules, notices and executive orders.
Example request
curl -s 'https://www.federalregister.gov/api/v1/documents.json?per_page=1&order=newest'
Free tier, in plain English
No API key or registration needed and no published rate limit; the docs say only an HTTP client is required.
Alternatives in Open Government Data
API ColombiaColombia reference data: departments, cities, tourist sites, airports, presidents and more.api.data.govOne free key unlocks 450+ US federal agency APIs (NASA, NOAA, FDA, and more).FreeApiverketSingle API for 35+ Swedish agencies: weather, statistics, transport, companies, parliament and more.FreemiumArgentinaDatosArgentine holidays, inflation, interest rates, and Congress voting data from public sources.FreeAyes and NoesUK MPs, parties, Commons voting records and Early Day Motions, built on official Parliament data.Free