What is the best external chef api to integrate with an external project?

[majormoses]

In order to verify health and perform actions based on it we need a stable API for chef. In this sensu plugin we have re-written it as chef/rest was deprecated and now ridley is deprecating external support. Before switching to another set of api's I'd like to make sure that next week we are not replacing it yet again or have to considerably updates to our plugin. Any idea on how far out you are from calling it a stable 1.0?