Blake-Plock, S. and Casey, C.
Shelly Blake-Plock, Maryland, United States
Keywords: simulation, high level architecture, xAPI, data standards
High Level Architecture (HLA) remains a foundational standard for distributed simulation, yet the activity generated within HLA federations is often difficult to reuse across analytics, training, readiness, and research systems. This poster presents Federate xAPI, an open-source, low-code HLA federate that transforms selected simulation activity into Experience API (xAPI) statements without requiring changes to existing simulation federates. Federate xAPI joins an existing Run-Time Infrastructure (RTI), subscribes to configured HLA objects and interactions, detects defined state changes, applies filtering and mapping rules, and sends resulting xAPI statements to a Learning Record Store. A supporting SQL cache maintains selected federation state for correlation and contextual enrichment. The architecture preserves HLA for simulation execution while introducing a standards-based activity-data layer for downstream analysis. The poster will describe the architecture, event-mapping process, validation approach, and representative applications relevant to multinational exercises, defense training, human-autonomy teaming, and longitudinal readiness analysis. Because the software is distributed under the Apache 2.0 license, organizations can evaluate, extend, and deploy the capability across military, aviation, medical, industrial, and research simulation environments.