how to get a response of running an API on remote rails server from another rails application

I have to rails application, my aim is to call an API on remote rails application and get back the result of that API.
for example:
1st Application has update() API which does some processing and create a hash called data
Now I want to call update() from 2nd Application and want data hash in response.

what I am doing right now is using RestClient.get(url) url is 1st application's url appended with API name.

Does this solve my requirement or is there any other better way of doing this?