Systems and methods for managing Application Programming Interfaces (APIs) are disclosed. For example, the system may include one or more memory units storing instructions and one or more processors configured to execute the instructions to perform operations. The operations may include sending a first call to a first node-testing model associated with a first API and receiving a first model output comprising a first model result and a first model-result category. The operations may include identifying a second node-testing model associated with a second API and sending a second call to the second node testing model. The operations may include receiving a second model output comprising a second model result and a second model-result category. The operations may include performing at least one of sending a notification, generating an updated first node-testing model, generating an updated second node-testing model, generating an updated first call, or generating an updated second call.