BACKGROUND: To date, no studies have assessed how the World Health Organization's (WHO) work operationalizes health equity in practice. To fill the gap, this study investigates the WHO's Urban Health Equity Assessment and Response Tool (Urban HEART) that focuses on assessing and responding to inequities within cities. This qualitative research answers the question: "how does Urban HEART and associated policy and practice align (or not) with inconsistent approaches to health in/equity?" In other words, asking if past findings from investigating WHO key texts also transpire into Urban HEART and its practices. METHODS: Purposive sampling was employed to undertake synchronous electronic interviews with key informants to glean a multi-faceted perspective of how equity was operationalized through Urban HEART. Data was collected from 18 key informants who had diverse experiences with Urban HEART. RESULTS: The results of this study provided insights on how the WHO's Urban HEART fares with respect to the three inconsistencies. For the first inconsistency, measurement, Urban HEART was evaluated to measure inequities across districts and neighbourhoods, but not inter-city, demonstrating alignment with WHO texts discussing measurement across groups and not individuals. For the second inconsistency, the goals or approaches sought in striving for health equity, despite Urban HEART presenting "three main approaches to reduce health inequities," informants expressed the most alignment of Urban HEART action with only one of these approaches ("targeting disadvantaged population groups or social classes"). However, informants also shared how actions taken as part of Urban HEART largely aligned with "striving for a baseline level of health for all," which is not explicitly specified by the WHO as a main approach. And lastly, in assessing the third inconsistency of whether Urban HEART aligned with addressing inequity through focusing on socioeconomic status/position versus broader social determinants of health, Urban HEART was strongly aligned with the latter. CONCLUSIONS: This study presents disconnects between WHO's intentions and actions that followed from Urban HEART. Moving forward, it would be important to discuss goals or approaches sought, prior to any global health initiatives, whether explicitly focused on health equity or not.