The Subuno Java SDK by Subuno allows API communication to integrate fraud detection features into applications. This project requires JSON dependencies available at https://github.com/douglascrockford/JSON-java
Whether you're rolling your own soup to nuts API management solution, or your existing API management technology is missing some of the basics when it comes to API endpoint security, Cloudflare's recently released Traffic Control may have the right combination of features to fill in the gaps.