Set a goal to track a certain number of hours each day, week, or month for a certain project or tag on Toggl Track. If you don't, Beeminder will take your money.
Track your time on Toggl Track like normal. Toggl Track will automatically report it to Beeminder.
Beeminder will warn you if you're in the danger zone. As long as your dots don't cross the bright red line, your money is safe! (Details on our blog)