When the bot dies, we don't have any notification.
There are a few possible situations where a bot can die, an outage of the server can be one of those.
But the thing is that we need to check if the bot is alive and able to post messages into the server, and the best way to do this is enabling a http endpoint where we can send a GET request and receive some data back.
For that we have a good example in https://leanpub.com/automation-and-monitoring-with-hubot/read#leanpub-auto-serving-http-requests
We could use some inspiration from hubot-diagnostics but remembering that we need to have the bots health information through http requests, for infrastructure checking purposes.

/assign @arthurTemporim