Automatic Verification and Anomaly Detection in a Representational State Transfer (REST) Application Programming Interface

Methods for automatically detecting an anomaly in an application programming interface (API) having a plurality of invariants is provided. Such an API may conform to a Representational State Transfer (REST) model or style of software architecture. Such methods enable users to build simple test scripts that can be fed into specialized software applications configured to automatically exercise and test the API using the test scripts. Further, such methods allow automatic testing of API functionality regardless of whether or not the expected output value(s) for a given input are specified.