When asked to submit a Gerrit change:

curl -s --netrc "https://review.lan.tribe29.com/a/changes/125896/submit" -X POST -H "Content-Type: application/json" -d '{}'

This will submit the change and all its unmerged parents (provided all the changes have the required approvals).

When asked to improve a Gerrit change:

1. Fetch the current state from Gerrit

gerrit-change-log HEAD

2. In case a Verified -1 is reported, fetch the Jenkins job results using the jenkins skill
3. For each failed stage, fetch the details of the triggered stage job

When asked for the list of open Gerrit changes