USGS Earthquake Catalog
Real-time and historical earthquake event feeds and FDSN query API from the U.S. Geological Survey.
USGS Earthquake Catalog is listed in Open Data.
Auth No auth Pricing Free URL https://earthquake.usgs.gov/ Docs https://earthquake.usgs.gov/fdsnws/event/1/
Key metrics
Fair use Rate limit Free and keyless FDSN event API; per-query result caps (~20,000 events) and fair-use throttling apply. No monthly cap.
Gotchas
No gotchas documented yet. Contribute one if you know a constraint we missed.
Labels
- No auth
No auth
Callable with no API key or login — lowest-friction to integrate.
earthquakes geology seismic realtime geo