Webhook is a lightweight configurable tool written in Go, that allows
you to easily create HTTP endpoints (hooks) on your server, which you
can use to execute configured commands. You can also pass data from
the HTTP request (such as headers, payload or query variables) to
your commands. webhook also allows you to specify rules which have to
be satisfied in order for the hook to be triggered.

For example, if you're using Github or Bitbucket, you can use webhook
to set up a hook that runs a redeploy script for your project on your
staging server, whenever you push changes to the master branch of
your project.