chatbot engine integration chat support interface

I am looking for an automatic chat-based customer support. As chatbot engine I can use wit.at or api.ai or others

I found that both engines can be easily integrated with facebook, twitter, etc. But what I am looking for is a simple chat forum at a webpage. Is the are any chat interface that can be integrated with before mentioned engines.

(on the api.ai webpage there is intercom.io chat for technical support, however there is no integration with it.)