Please create in the future a new issue if the question is not about the original topic (the topic was about requesting an integration for Twitter). Thanks!
Anyway if you want a different callback URL you can simply set:
export WEBHOOK_TUNNEL_URL="http://192.168.1.123:5678/"
as documented here:
Twitter integration is fine. I setup a workflow which posts the latest rss feed item to Twitter. However, if the post has an image, it only tweets the text part of the post, and the link. Somehow I can’t figure out how to extract an rss post with its image link so that the post and the page are both displayed in the tweet