MASINT APIs

Environmental, seismic, and signature APIs the MASINT operator pulls from. National laboratories produce most signature libraries privately; the APIs here cover the public sensor networks.

API	Auth + tier	Endpoint	Returns
USGS Earthquake Hazards	Free.	https://earthquake.usgs.gov/fdsnws/event/1/	Earthquake catalog, real-time feeds.
FDSN webservices	Free; per-network.	https://www.fdsn.org/webservices/	Seismic event / station / data access (IRIS, GEOFON, etc.).
IRIS DMC	Free.	http://service.iris.edu/	Seismic waveform and station metadata.
CTBTO IDC products	Restricted to states.	https://www.ctbto.org/	International Monitoring System data.
NOAA Space Weather	Free.	https://services.swpc.noaa.gov/	Solar wind, geomagnetic indices, X-ray flux.
OpenAQ	Free.	https://api.openaq.org/	Air-quality measurements worldwide.
PurpleAir API	Free + paid.	https://api.purpleair.com/	Crowdsourced air-quality sensors.
Radiation Network	Public.	https://www.radiationnetwork.com/	Crowdsourced gamma-radiation readings.
Safecast API	Free.	https://api.safecast.org/	Open radiation and air-quality data.
NLDN / Blitzortung	Public for Blitzortung.	https://www.blitzortung.org/	Lightning detection network.
Infrasound networks	Per-network.	various	Atmospheric pressure-wave detection.

References

• MASINT for the discipline overview.

• MASINT Tools for the operator’s kit.

• MASINT Sources for the data sources.

• MASINT Techniques for the tradecraft.

• MASINT Intel for the finished-product side.

• GEOINT APIs

• USGS

• CTBTO