What it provides
The U.S. Geological Survey provides the FDSN Event Web Service for querying the USGS earthquake catalog.
USGS Earthquake API
Geological Survey gives the FDSN Event Web Service for querying the USGS earthquake catalog.
Data and operations
It supports earthquake-event queries, counts, catalog/contributor lists, service-version retrieval and multiple output formats.
Endpoints and products
Named methods include /query, /count, /catalogs, /contributors, /application.json, /application.wadl and /version.
Coverage and access
Global earthquake catalog. Thailand can be queried by geographic bounds, radius or other supported parameters.
Access and terms
The public service documentation does not state an API-key requirement. Requests use HTTP GET query parameters.
Updates
Queries can request events through the present time and filter by updatedafter. The service does not promise a fixed ingest delay for every event.
Limits
Default query windows/limits and catalog revision behavior apply. Earthquake parameters can be revised after initial publication, and catalog coverage is not identical to every national seismic network.
Research checked 2026-09-02. Access conditions and product details may have changed; consult the provider before integrating.
Open the source
Use the provider link for the latest information and any current access requirements.