You can integrate the Spontit API with BitBucket webhooks. For instructions on how to do so, see here.
We use the function in get_bitbucket_webhook_body.py on our server to generate the body of the notification.
If you use the Spontit API and want us to format the body differently, or improve the way we format the body and generate the description, simply create a pull request or issue and we'll review it. If it all checks out, we'll test it and update our server.
We GREATLY appreciate all additions.