The services component of the USGS Earthquake Hazard Toolbox provides documentation and examples of the web service endpoints used by the individual applications in the USGS Earthquake Hazard Toolbox. While these web services are publicly accessible, we ask that users not over-use them, for example by making many calls in a short period of time. If web service usage impacts the performance of our web applications or the cost of maintaining the services increases due to increased usage, we reserve the right to limit access in the future.

We request that users who want to perform many calculations use the USGS hazard codes directly.
Click to expand panels to learn more about each service.