ecsantos: I read some zuul code. zuul scheduler may report by 
https://opendev.org/zuul/zuul/src/tag/4.6.0/zuul/scheduler.py#L459
https://opendev.org/zuul/zuul/src/tag/4.6.0/zuul/driver/gerrit/gerritreporter.py#L38
but I don't find zuul return url build code. I wonder if it can be able to do by modify zuul code..