ADDON-NAME is an add-on for providing functionality X.
Adding functionality X to an application provides benefits X, Y and Z. [[Sell the benefits here! Don't skimp - developers have many options these days.]]
ADDON-NAME is accessible via an API and has supported client libraries for [[Java|Ruby|Python|Node.js|Clojure|Scala]]*.
ADDON-NAME can be attached to a Heroku application via the CLI: