HipChat Webhooks API
Event-driven webhook delivery from HipChat rooms. Webhooks could be registered via the REST API or declared in an add-on descriptor. Each delivery included a JWT-signed signed_request query parameter that the receiving service was expected to verify. The room_message event was the primary integration pattern, with additional events covering room enter, exit, topic change, archive, notification, and file upload. The webhook surface was retired with the rest of HipChat on February 15, 2019.
Documentation
Documentation
https://developer.atlassian.com/server/hipchat/webhooks/
Authentication
JWT verification of signed_request