DarkSonar API by DarkOwl is a risk rating system that uses darknet intelligence to measure an organization's credential exposure on the darknet. It is designed to inform threat modeling, third-party risk management, and cyber insurance underwriting, with the potential to predict the likelihood of cyberattacks. DarkSonar evaluates credential leakage on the darknet to assess a company's exposure and provides a risk signal based on the severity and extent of email exposure on the dark web. The API allows users to query and retrieve information from DarkOwl's database of darknet content.