I put together a basic webhook handler for the ESP8266 that will allow a /micropython command to be setup in HipChat or Slack that will cause the message to be evaluated on the device with the response returned to the caller. I put it together to make it easier for a few others to try it out and for me to have easier access to my device to try basic things. It has some attempts in place at making it a bit resilient to those trying to bring it down with obvious approaches.
https://github.com/cpopp/MicroPythonChatIntegration