API Calling from Ensemble?

I'm trying to develop monitoring API for the following requirements:

Component status - indicates whether the component (service, process or operation) up/enabled or down/disabled, and tell if there are more than two states (e.g. retrying, suspended)

Input: component name

Output: component state

Queue depth - indicates how many messages are in a queue.

Input: queue name

Output: number of messages currently in the queue

Last activity date - indicates the last time that a message was received by a component

Input: component name

Output: a date/time which corresponds to when the component last received a message 

I went through Monitoring InterSystems IRIS Using REST API doco but it seems mostly backend. Is anyone or resource is working on fetching data from the interface? Any feedback is appreciated.