The field of implementation science has made notable strides to enhance the practice of tailoring through the development of implementation strategy taxonomies (e.g., Expert Recommendations for Implementation Change; Waltz et al., In Implement Sci 10:109, 2015) and numerous tailoring methodologies (e.g., concept mapping, conjoint analysis, group model building, and intervention mapping; Powell et al., In J Behav Health Serv Res 44:177–194, 2017). However, there is growing concern about a widening gap between implementation science research and what is practical in real-world settings, given resource and time constraints (Beidas et al., In Implement Sci 17:55, 2022; Lewis et al., In Implement Sci 13:68, 2018). Overly complex implementation strategies and misalignment with practitioner priorities threaten progress in the field of implementation science. As solutions to the burgeoning threats, implementation science thought leaders have suggested using rapid approaches to contextual inquiry; developing practical approaches to implementation strategy design, selection, and tailoring; and embracing an embedded implementation science researcher model that prioritizes partner needs over researcher interests (Beidas et al., In Implement Sci 17:55, 2022). Aligned with these recommendations, we introduce the Activity Readiness Tool (ART)—a brief, practitioner-friendly survey that assesses discrete determinants of practice through an implementation readiness lens. We illustrate how the tool can be used as a rapid approach to facilitate implementation efforts in a case example involving a national integrated care initiative. The ART can serve as a quick, user-friendly companion to an array of existing evidence-based tailoring methods and tools.