This paper describes the development and implementation of the first national, public and obligatory set of hospital performance indicators in the Netherlands. Focusing on effectiveness and safety, the set was developed by the Dutch Health Care Inspectorate to improve the effectiveness and efficiency of their task: monitoring the quality of the care delivered by providers. In addition, the set would enhance the transparency of the hospital sector, and stimulate individual hospitals to improve their scores. Bridging some of the classic distinctions between 'internal' and 'external' indicators, the Inspectorate's vision was to rapidly produce a feasible set of indicators that would fulfill these aims, while maximally preventing 'side effects' such as misinterpretations, defensive or perverse reactions. Explicitly avoiding the trap of searching for exhaustive validity of the indicators, the inspectorate's motto was 'feasability first'. This paper describes how this simultaneously philosophical, political and pragmatic strategy played out successfully, and how the indicator set was ultimately embraced by all parties involved.