Sample task that can be hooked into Capistrano for deploy-time annotations.

gistfile1.rb

require 'librato/metrics'
REPO_NAME = 'JoeStanton/my-project'

Librato::Metrics.authenticate 'joe.stanton@red-badger.com', 'API_KEY'

sha, msg = `git log -n 1 --pretty="%h:%s"`.strip.split(":", 2)
Librato::Metrics.annotate :deployments, "Deployed #{sha}", {
  description: msg,
  links: [ {rel: "github", href: "http://github.com/#{REPO_NAME}/commit/#{sha}"} ] 
}