i've been working on a webhook to instant messaging service called https://hooks.im after reading about a similar project here on hacker news (i think it was https://news.ycombinator.com/item?id=41144227). you can create webhooks, get a receiver-url that you can send your webhook invocations to and receive webhooks via im (currently only telegram). i've also added a jq-like template engine to reformat the request bodies (if wanted) to extract specific information. (only works for json bodies, obviously)
this is all in super early non-peer-tested alpha (if anything), so feel free to try it out and give feedback :)