Psychological resilience research is rapidly expanding, but diverse concepts, heterogeneous study designs, inconsistent reporting, and missing metadata standards limit data reuse and robust evidence synthesis. To address these challenges, we introduce ResiMETA, a continuously updated open-access database for trajectory-based resilience research that systematizes evidence from longitudinal studies on responses to stressor exposure and psychosocial resilience factors. The database compiles aggregated study-level data and metadata, including population characteristics, study designs, mental health outcomes, modeled trajectories, and resilience factors. For data harmonization, we developed categorization schemes for key variables and an ordinal rating scheme synthesizing evidence from heterogeneous statistical models. Data extraction and organization follow a customized metadata scheme informed by existing frameworks. ResiMETA is documented according to FAIR principles and openly accessible via the Open Science Framework (OSF: https://osf.io/xcwtk/). Currently, ResiMETA includes 344 primary studies with ongoing updates. We will present the ResiMETA metadata architecture and demonstrate its potential to enhance evidence synthesis and foster collaboration in resilience research. Although not yet aligned with DDI standards, ResiMETA offers opportunities for future integration, particularly in standardizing psychological variables using controlled vocabularies. We invite engagement with the DDI community to explore how metadata standards can advance evidence synthesis in psychology and related disciplines.