Question 1

What satellites and data sources does TerrAlert use?

Accepted Answer

Sentinel-2 (10 m) and Landsat 9 (30 m) optical imagery for change detection, corroborated with independent satellite signals: NASA FIRMS active fire, GLAD and RADD deforestation alerts, NASA GIBS flood extent, and Sentinel-1 SAR coherence for construction early-warning on Pro and Enterprise plans.

Question 2

How accurate is TerrAlert and how does it avoid false alerts?

Accepted Answer

TerrAlert surfaces a detection when independent sources corroborate a change, rather than relying on a single model score. Every detection carries a 0–1 confidence score that is filtered against the AOI's configured minimum, so teams control the precision/recall trade-off.

Question 3

Does TerrAlert have an API?

Accepted Answer

Yes. Pro and Enterprise plans include a REST API authenticated with JWT Bearer tokens, with endpoints to manage Areas of Interest, list detections, and read alert history. Default rate limit is 200 requests/minute.

Question 4

How much does TerrAlert cost?

Accepted Answer

Free ($0), Starter ($149.99/mo), Growth ($299/mo), Pro ($599.99/mo), and custom-priced Enterprise. Flat monthly pricing with no per-scene or per-image fees.