I’m not sure about a specific health check API but if you are looking for a request that will tell you that the server REST API is “still there”, you could do a simple request like:
http://localhost:7081/nexj/json/Entity?attributes=()&count=1
Which should return you something like:
[{“$class”:”UserPerson”,”$oid”:”1044DD36B04B554552BCB272113715E84E”}]
That said, devops may have a more “standard” way of doing this. The server does publish all kinds of JMX statistics as to it’s health that you could hook into with a monitoring/alerting library.