Query an external API from Backend - what lib to use?

Let’s say for a POC I want to query an external API from backend. For this I’ll extend the controller by a service class.
Then I want to start a request to an external API. To Post a set of data, APIToken and I’ll receive a JSON.

My question: is there any recommendation what lib to use? There are different Ideas: Rack queries, HTTParty or something else (write a GEM?)
Any ideas?

I found a gem that handles the task.