@technoweenie @tu1ly what would be an alternative? I thought "unmodified" payload actually meant not modifying anything inside the payload hash. On my recent pull request to add a service (https://github.com/github/github-services/pull/578) I add some extra data to the POST to be able to identify to what event the payload belongs to and pass along other values that the user has to enter when activating the service. Move and stuff them inside headers, that sounds kinda crappy. Any better ideas?