The research outlines a design for a quality attribute “ility” tool to assist with small satellite verification. Prior literature commonly requests that ilities (E.g., reliability) be built into smallsat systems to prevent failure. Test standards are reviewed to define ilities. Definitions are used to develop calculations that system designers can automate using a tool. Previous failure data are used to predict the reliability of a future smallest system. Bayesian estimation was applied to a qualitative NASA database of 219 smallsats (0.001–180 kg) failures from 2000 to 2016 to generate eight failure categories. A communication system (47%) or attitude control (16%) failure is most likely to occur during a future NASA smallsat mission. A failure in the communication system has a low chance of survivability (16%). A failure within the attitude control system is expected to end with partial mission success (54%). A tool can dynamically aid verification by calculating ilities.