The short version, for the writers.

Commitmentor is a Chrome / Brave / Edge extension that lets you bind your own behavior. You pick the sites you don’t want to keep opening on autopilot, you write the reason in your own words, and you attach a real cost if you continue. When you reach for the tab in a weak moment, the contract shows up first.

It’s based on three behavioral findings that have held up across decades: Schelling on commitment devices, Kahneman and Tversky on loss aversion, and Loewenstein on the cold-to-hot empathy gap. The product itself is intentionally small — no streak achievements, no notifications, no shame — because the friction is the feature.