Google dropped API.AI and replaced it with DialogFlow.
You can integrate a Bot Libre for with Dialog Flow using a "proxy" bot on Bot Libre that forwards requests to the DialogFlow web REST API using a Self script that uses the Http class.
It would be similar to our Watson proxy bot, you could start with that template and adapt it to the DialogFlow API,
A proxy bot lets you integrate with all of Bot Libre's features including avatars, speech, our web and mobile SDK, social media and IOT integration. You can also extend your DialogFlow bot with Bot Libre's NLP and scripting.